300-430 Implementing Cisco Enterprise Wireless Networks (300-430 ENWLSI) Questions and Answers

The Cisco OfficeExtend Access Point (OEAP) feature is enabled on a Cisco Catalyst 9800 Series Wireless Controller through the Flex Profile. The Flex Profile allows for the configuration of various settings specific to FlexConnect deployments, including OEAP settings, which enable remote workers to connect to the corporate network securely.

References :=

CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

Cisco documentation on Catalyst 9800 Series Wireless Controllers

 To prevent honeypot attacks most efficiently, the wireless network engineer should set the auto containment level to 4 and select the Using Our SSID containment option (D). This configuration allows the system to automatically contain rogue APs that are spoofing the organization’s SSID, which is a common tactic in honeypot attacks. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

To ensure that only admins have access to network device management while allowing guest users to reach the web portal, access to Cisco ISE must be permitted on the pre-authentication ACL. This configuration allows guests to interact with the portal without granting them broader network access.

 In passive fallback mode for RADIUS, when the primary RADIUS server fails, the controller will start using the secondary RADIUS server. The default timer settings include an inactive timer, which, upon expiration, prompts the controller to attempt to send RADIUS requests back to the primary server. If the primary server is responsive, the controller will resume sending requests to it. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To meet the requirement of allowing employees to easily onboard their personal devices and visitors to connect without reception desk intervention, configuring a self-registration guest portal on Cisco ISE is the appropriate solution. This feature enables guests to create their own accounts and gain network access, streamlining the process for both employees’ personal devices and visitors. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 In a Cisco WLAN deployment where it is required that all APs from branch1 remain operational even if the control plane CAPWAP tunnel is down, the operational mode that must be configured on the APs is standalone (option B). In standalone mode, the APs can continue to function and provide network access to clients even without a connection to the WLC, which is essential during a WAN failure to headquarters. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, with a focus on AP operational modes and their behavior during network disruptions.

When FlexConnect APs are in standalone mode due to losing connection to the WLC, they should still be able to serve clients if local switching and authentication are enabled. The issue described occurs because FlexConnect Local Authentication is disabled. With local auth enabled, the AP can authenticate clients directly, without needing to communicate with the WLC, thus allowing the SSID to remain advertised and clients to stay connected even if the WLC is unreachable. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

When using FlexConnect Smart AP Image Upgrade without a configured FlexConnect Master AP, the WLC will transfer the image to one indoor AP and one outdoor AP separately. Each AP model needs a different firmware image due to hardware differences. Therefore, there will be two image transfers from the WLC: one for the 2702i APs and another for the 1532i APs.

References :=

CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

Cisco documentation on FlexConnect Smart AP Image Upgrade

To ensure end-to-end QoS and preserve markings correctly in the VoWLAN setup, the configurations needed on the wired network are trust boundaries and policy maps. Trust boundaries define where the network trusts the QoS markings on packets, and policy maps are used to enforce QoS policies on the network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

The command in question is typically used to configure the switch to interact with a RADIUS server for session tracking purposes. The RADIUS server keeps track of authenticated sessions, ensuring that they are still active and monitoring for any changes in status. This is crucial for maintaining network security and ensuring that only authorized users have access to network resources.

The OfficeExtend Access Point (OEAP) split tunnel feature allows the separation of corporate and local traffic. By implementing a split tunnel, remote workers can maintain wireless connectivity to the corporate network while simultaneously accessing local network resources such as printers. This solution ensures that local traffic does not have to traverse the corporate network, which can cause connectivity issues like the ones reported by the users. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

Before running a Client Traffic Stream Metrics report in Cisco Prime Infrastructure, the task that must be run is “client status”. This task collects the necessary data regarding the clients’ traffic streams, which is then used to generate the report. References := Cisco Prime Infrastructure Reports User Guide

 EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) is an EAP method that an Access Point (AP) can use to authenticate to the wired network. EAP-TLS is considered one of the most secure EAP methods because it uses mutual authentication, where both the client and the server authenticate each other using certificates.

When configuring an Access Control List (ACL) to restrict traffic to the Wireless LAN Controller (WLC) CPU, the direction of the traffic is crucial. Since the ACL is meant to control traffic that is destined for the WLC CPU, it should be set as “Inbound”. This means that any rules applied within this ACL will affect incoming traffic towards the WLC, which is necessary when aiming to restrict certain types of traffic from reaching and potentially overwhelming the controller’s processing capabilities. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 In the context of Cisco Catalyst 9800 Series Wireless Controllers, RADIUS profiling requires the correct AAA (Authentication, Authorization, and Accounting) configuration to collect and forward details about clients to a RADIUS server such as Cisco ISE (Identity Services Engine). The correct command in this scenario is “aaa accounting network acct_method start-stop group rad-group” which enables accounting of network services. This command starts gathering accounting information for all network-related service requests and sends start and stop records to the RADIUS server specified in the ‘rad-group’. This allows the controller to forward information about clients’ activities on the wireless network to Cisco ISE for profiling.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The AAA override feature on a WLAN allows for individualized security policies to be applied to users after they are authenticated by the AAA server, which in this case is Cisco ISE (Identity Services Engine). The company policy requires that all users be denied access to any resources until they pass validation. By using AAA override, the network can enforce access control policies based on user credentials and group membership, ensuring that users cannot access network resources until they have been validated by Cisco ISE. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The maximum time range that can be viewed on the Cisco DNA Center issues and alarms page is 24 hours. This allows network administrators to monitor and troubleshoot recent issues and alarms within a one-day period. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

 To ensure the 1810 OEAP can join the controller from remote teleworker locations, the firewall must allow specific UDP ports that are used for AP communication with the controller. UDP ports 5246 and 5247 are used for Control and Provisioning of Wireless Access Points (CAPWAP) control and data messages, while UDP ports 12222 and 12223 are used for OfficeExtend APs’ data traffic. Blocking these ports would prevent the APs from joining the controller, hence they must be allowed on the firewall.

A Public-Signed SAN (Subject Alternative Name) certificate allows multiple domain names to be protected with a single certificate. This is useful in a distributed environment like a guest portal on Cisco ISE, where there may be multiple nodes with different Common Names (CNs). Using a SAN certificate can prevent CN mismatch errors during SSL/TLS handshakes. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

For new Access Points (APs) in a Cisco FlexConnect deployment, switch ports should be configured in trunk mode. This allows the APs to handle traffic for multiple WLANs or SSIDs, each associated with different VLANs. Trunk mode enables the AP to tag traffic with the correct VLAN IDs as per its configuration. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

When setting up identity-based networking with ISE and configuring AAA override on the WLAN, the attributes that can be used to change the client behavior from the default settings include the DNS server and DSCP value. The DNS server attribute allows for the specification of a DNS server per client, which can be essential for directing traffic through specific network paths or applying policies based on domain name resolutions. The DSCP value attribute is used to mark the packets with a specific Quality of Service (QoS) level, which can prioritize or deprioritize traffic as needed. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The issue with users configured for EAP-PEAP not being able to connect to the network, when a Cisco Wireless LAN Controller (WLC) is deployed using local EAP, typically points to a misconfiguration in the local EAP profile on the WLC. EAP-PEAP relies on a server-side certificate to create a secure TLS tunnel for the authentication process. If the local EAP profile is not correctly configured with the proper certificate or other necessary settings, the authentication process will fail, preventing users from connecting. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

 When configuring an autonomous Access Point (AP) for 802.1x authentication using an external authentication server like RADIUS, it’s essential that AP knows where to send authentication requests and has a secure method of communicating with it. The RADIUS server’s IP address must be configured on AP so it knows where to forward user credentials for verification. Additionally, a shared secret must be set up between AP and RADIUS server as part of their secure communication protocol; without this shared secret, they cannot trust each other’s communications. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

Cisco Prime Infrastructure reporting provides a comprehensive summary of inconsistencies and missed best practices related to WLAN controllers. It aggregates data from all WLCs, Cisco MSE, and itself to generate detailed reports. References: Cisco Prime Infrastructure reporting features documentation.

In Quality of Service (QoS) for networking, Class of Service (COS) and Differentiated Services Code Point (DSCP) are used for traffic classification and prioritization. Voice traffic is generally given high priority due to its sensitivity to delay and requires proper tagging to maintain quality over the network.

The correct mapping for voice traffic, according to best practices, is a COS value of 5 mapped to a DSCP value of 46. This is because DSCP 46 corresponds to Expedited Forwarding (EF), which is typically used for voice traffic prioritization in IP networks.

The exhibit shows the output from a command on a network device that displays the current mappings between COS values and DSCP values. The mapping that needs modification for correct voice traffic tagging can be identified by looking at the standard practice for voice QoS, which uses a COS value of 5 mapped to a DSCP value of 46.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The feature that must be enabled to ignore non-802.11 interference is “Avoid Persistent Non-WiFi Interference.” This setting allows the Radio Resource Management (RRM) to not react to non-802.11 noise and interference, which can be crucial in environments where such interference is common but does not significantly impact wireless performance. By enabling this feature, RRM will not change the channel in response to non-IEEE 802.11 interferers, thus maintaining a stable channel plan. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

To separate different types of client authentication on a Cisco ISE deployment, policy sets and policy groups can be used. Policy sets allow the creation of policies based on conditions such as device type, while policy groups categorize clients for the application of specific policies. References: Cisco ISE documentation on policy sets and policy groups will have detailed information.

To route wireless traffic from the branch through the firewall at corporate headquarters, the correct Cisco FlexConnect configuration is central authentication and central switching. This setup ensures that both user authentication and data traffic are handled centrally at the corporate headquarters, allowing the firewall to inspect and route the traffic accordingly. Local RADIUS servers in each branch can still be used for redundancy or other purposes, but the central control of traffic is maintained. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

 For a startup company without LDAP, using the internal database of the RADIUS server is a viable solution to authenticate wireless users. This approach allows the company to maintain a directory of users within the RADIUS server itself, providing similar security and user experience as LDAP would. Users can be authenticated against this internal database, ensuring secure access to the wireless network. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

For rogue containment on an SSID, it’s recommended to use two access points for containment (Option B). Using more than two can lead to unnecessary interference and potential disruption of service for legitimate users, while using just one may not be effective enough in containing the rogue SSID. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

The issue described in the scenario occurs because when creating an Access Control List (ACL) to be used for managing traffic to the Wireless LAN Controller’s (WLC) CPU, it must be explicitly defined as a CPU ACL. If this specification is not made during the creation process, the ACL will not appear in the drop-down list when enabling the CPU ACL function. This is necessary because CPU ACLs are used to protect the WLC against potential Denial-of-Service (DoS) attacks by filtering incoming packets directed at the management interface before they are processed by the CPU. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

An ACL configured for BYOD clients to redirect to a guest portal must allow access to the RADIUS server and Cisco ISE. The RADIUS server is crucial for authentication services, a core component of network access control for BYOD. Cisco ISE integrates with the network infrastructure to provide comprehensive security, including guest access management, thus its accessibility is essential for the redirection process to function correctly. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

For a network with 3000 APs and 7000 IPS licenses, scaling to a high-end server is appropriate. This will provide the necessary resources and capabilities to support the large number of APs and the extensive licensing requirements for the Intrusion Prevention System.

 In a multicast implementation using multiple multicast groups and PIM routers, the address that provides automatic discovery of the best RP (Rendezvous Point) for each multicast group is 224.0.1.39. This address is used by the Auto-RP feature, which allows for dynamic RP discovery and simplifies the management of multicast groups across the network. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 For a wireless network supporting voice and video applications for Apple devices, especially with Fastlane implementation, the QoS profile to configure on the user WLAN for iPhones updated to version 14.5.432302546 is Platinum. This profile provides the highest level of QoS, ensuring priority for voice and video traffic. References:= (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

When a wireless controller is configured to authenticate clients against Microsoft Active Directory using PEAP (Protected Extensible Authentication Protocol), it uses RADIUS (Remote Authentication Dial-In User Service) as the protocol to communicate with the authentication server. RADIUS is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for users who connect and use a network service.

 The customizable security report in Cisco Prime Infrastructure that shows rogue access points (APs) detected since a point in time is the “New Rogue APs” report. This report is specifically designed to track and list all newly detected rogue APs within the network from a specified time, allowing network administrators to quickly identify unauthorized devices. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

 Link-Local Service (LSS) filtering for mDNS (Multicast Domain Name System) is used to control the propagation of mDNS services across the network. To enable LSS for the AppleTV mDNS service only when ORIGIN is set to Wired, the correct action is to set ORIGIN to Wired and enable LSS specifically for the AppleTV service. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The Simple Certificate Enrollment Protocol (SCEP) is used to securely issue certificates to network devices in a scalable manner. When provisioning certificates on a Cisco Catalyst 9800 Series Wireless Controller using a third-party CA server, SCEP is the protocol that facilitates this process. It allows the controller to request and install certificates automatically, which is essential for establishing secure communications within the network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

The correct command to shut down the 2.4 GHz radio on a specific AP on a Cisco 3850 switch is ap name Floor1_AP1 dot11 24ghz shutdown. This command specifies the AP by name (Floor1_AP1), the radio frequency band (dot11 24ghz), and the action to be taken (shutdown). The other commands listed either reference the wrong frequency band, use incorrect syntax, or are not valid Cisco IOS commands for managing AP radios. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To enable VLAN tagging for wireless Identity-Based Networking on a WLAN, an engineer must enable AAA override, which allows for dynamic VLAN assignment. Additionally, the RADIUS server attributes need to be updated to include tunnel type 64, medium type 65, and tunnel private group type 81, which are necessary for VLAN tagging information. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 The correct configuration for limiting Internet bandwidth for each guest client on a Cisco Catalyst 9800 WLC is through a policy map. A policy map allows the creation of policies that can manage traffic within a network. By setting a bandwidth limit within the policy map, the WLC can enforce the required QoS for guest clients. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

In a Cisco wireless LAN controller, setting a specific data rate to ‘Mandatory’ means that all wireless clients must be able to communicate at this rate. To ensure that multicast uses the 54Mbps rates, one must set the 54Mbps data rate to ‘Mandatory’. This configuration will make it so that all multicast traffic is transmitted at this minimum set data rate, thus meeting the requirement specified by the engineer.

The Cisco Aironet 600 Series OfficeExtend APs support various Layer 2 security options, including WPA+WPA2 and 802.1X. WPA and WPA2 provide secure encryption for wireless data, while 802.1X offers a robust authentication framework. These security options ensure that the wireless network is protected against unauthorized access and data breaches, which is crucial for remote workers connecting to the corporate network. References := CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 Cisco AVC (Application Visibility and Control) on a Cisco Wireless LAN Controller (WLC) is used to prioritize traffic by marking the packets. For Cisco IP cameras that use the wireless network, the AVC rule would be configured to mark the packets with a specific QoS value, ensuring that the video traffic is treated with higher priority as it traverses the network. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The bronze QoS level is typically recommended for guest services in a wireless network environment. This level prioritizes basic internet access, which is suitable for guest services that do not require high bandwidth or low latency. It ensures that more critical services are not impacted by guest traffic, which is often less sensitive to performance fluctuations. References := CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To ensure end-to-end QoS and preserve markings correctly in the VoWLAN setup, the configurations needed on the wired network are trust boundaries and policy maps. Trust boundaries define where the network trusts the QoS markings on packets, and policy maps are used to enforce QoS policies on the network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

If the Cisco 5520 Series Wireless LAN Controller is no longer manageable via the network after implementing a CPU ACL, permit statements must be added to the top of the ACL in both directions (A). These statements should specify the network from which management is allowed and the virtual interface of the controller to ensure proper management access. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 The configuration for the Rogue Rule named “Rule 1” is set to classify an access point (AP) as malicious if it meets certain conditions. The rule specifies that the AP must have a Minimum RSSI (Received Signal Strength Indicator) of less than or equal to -65 dBm and must have been seen for a Time Duration greater than or equal to 3600 seconds. Among the options provided, both A and C have been seen for more than 3600 seconds, which satisfies the Time Duration condition. However, for the RSSI condition, only option C with an RSSI of -60 dBm meets the criteria of being less than or equal to -65 dBm. Therefore, option C is the correct answer, as it fulfills both conditions set by the Rogue Rule.

 Cisco AVC (Application Visibility and Control) on a Cisco Wireless LAN Controller (WLC) is used to prioritize traffic by marking the packets. For Cisco IP cameras that use the wireless network, the AVC rule would be configured to mark the packets with a specific QoS value, ensuring that the video traffic is treated with higher priority as it traverses the network. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

During the Extensible Authentication Protocol (EAP) process, the RADIUS server generates an encrypted session key after the client’s identity is authenticated. This session key is sent to the access point to encrypt data frames between the client and the access point. It ensures that each session has a unique encryption key, enhancing security. References: Look for information on EAP and RADIUS in the CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

To meet the requirement of allowing employees to easily onboard their personal devices and visitors to connect without reception desk intervention, configuring a self-registration guest portal on Cisco ISE is the appropriate solution. This feature enables guests to create their own accounts and gain network access, streamlining the process for both employees’ personal devices and visitors. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 Differentiated Services Code Point (DSCP) is the trust model that must be configured on the switch ports to which the APs are connected in local mode. This is because DSCP provides a way to classify and manage network traffic and to provide QoS. DSCP can be trusted on the switch port, and the AP can then mark the packets with the appropriate DSCP value, which will be retained across the network. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

Cisco Connected Mobile Experiences (CMX) Location Analytics requires accurate tracking of devices within the wireless network’s coverage area. To utilize CMX Location Analytics effectively, it is essential to enable tracking parameters in Cisco Mobility Services Engine (MSE). This allows MSE to collect data on device locations and movements within the environment, which can then be analyzed by CMX for insights into customer behavior, asset tracking, or other analytical purposes. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

Local EAP (Extensible Authentication Protocol) allows wireless LAN controllers to directly authenticate clients using an internal database, which can be useful when external RADIUS servers are unreachable. By enabling local EAP, client devices can still connect to wireless networks even if communication with RADIUS servers fails, ensuring continuous network access for users. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

TACACS+ (Terminal Access Controller Access-Control System Plus) is recommended for managing device access as it provides a more granular level of control over user authentication and authorization than RADIUS. It allows for different levels of access based on user identity by interfacing with external repositories such as Active Directory or LDAP. This protocol helps in distinguishing between different users and assigning appropriate access rights based on their roles within an organization. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 To prevent honeypot attacks most efficiently, the wireless network engineer should set the auto containment level to 4 and select the Using Our SSID containment option (D). This configuration allows the system to automatically contain rogue APs that are spoofing the organization’s SSID, which is a common tactic in honeypot attacks. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

Apple’s Fastlane technology is used to prioritize traffic from iOS devices on the network. By enabling Fastlane under each WLAN setting, the network can recognize and prioritize traffic from Apple iOS devices, addressing the QoS issues for these devices on the WLANs. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

The issue is likely caused by the CPU ACL on the controller, which is blocking HTTP/HTTPS traffic from the guest clients. When a WLAN with Web Authentication is used, the wireless client’s browser is redirected to a web page for authentication. If the CPU ACL is configured to only allow controller web management traffic from the IT subnet, it may inadvertently block the necessary HTTP/HTTPS traffic for the Web Authentication process, leading to a timeout on the wireless client browser. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide, specifically the sections discussing CPU ACLs and their impact on network traffic.

During the Extensible Authentication Protocol (EAP) process, the RADIUS server generates an encrypted session key after the client’s identity is authenticated. This session key is sent to the access point to encrypt data frames between the client and the access point. It ensures that each session has a unique encryption key, enhancing security. References: Look for information on EAP and RADIUS in the CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide.

For printing services using Bonjour in a WLAN environment where mDNS services are utilized, especially with WLC firmware version 8.x, it’s essential that:

Enable mDNS and IGMP snooping (Option A): Multicast DNS or mDNS needs to be enabled for Bonjour services to function correctly as they rely on this protocol for service discovery within local networks. IGMP snooping improves network efficiency by ensuring multicast traffic is only forwarded to nodes that have explicitly requested it.

References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

Local EAP (Extensible Authentication Protocol) allows wireless LAN controllers to directly authenticate clients using an internal database, which can be useful when external RADIUS servers are unreachable. By enabling local EAP, client devices can still connect to wireless networks even if communication with RADIUS servers fails, ensuring continuous network access for users. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

To load balance the data coming through NMSP from the WLCs and spread the load between multiple CMX servers, the configuration cmxctl config feature flags nmsplb.cmx-ap-grouping true should be used. This enables the load balancing feature and helps optimize the data flow for APs in a large network environment. References: The configuration for load balancing in CMX is explained in the certification guide, which outlines the commands and flags necessary to manage data flow efficiently.

If the Cisco 5520 Series Wireless LAN Controller is no longer manageable via the network after implementing a CPU ACL, permit statements must be added to the top of the ACL in both directions (A). These statements should specify the network from which management is allowed and the virtual interface of the controller to ensure proper management access. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

 When configuring Cisco OfficeExtend Access Points (OEAPs), enabling NAT IP only for office-extend is necessary if the APs are behind a NAT device and need to communicate with the Wireless LAN Controller (WLC) using the internal IP management address. The command config flexconnect office-extend nat-ip-only enable allows the APs to discover and associate with the WLC when the management interface is configured with a NAT address.

The correct command to add a VLAN with a specific ID to a FlexConnect group in a Cisco Wireless LAN Controller (WLC) is ‘config flexconnect group BranchA-FCG vlan 30 add’. This command specifies the FlexConnect group name ‘BranchA-FCG’ and the VLAN ID ‘30’, followed by the action ‘add’, which is consistent with Cisco’s CLI syntax for WLC configuration. References: CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

In a FlexConnect group with local switching but central DHCP, clients can use features like multicast and static IP without any issues. However, fast roaming, which allows clients to move seamlessly between access points with minimal delay, requires the access points to handle client information locally. If the configuration is changed to allow local DHCP, then the access points can cache client credentials, enabling fast roaming.

References :=

CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide

Cisco documentation on FlexConnect configurations

The Network Mobility Services Protocol (NMSP) is the protocol used by Cisco Mobility Services Engine (MSE) to communicate with Cisco Wireless LAN Controllers (WLCs). For NMSP messages to successfully pass through a firewall, the correct port must be allowed. The default port for NMSP traffic is TCP 16113. Therefore, to ensure communication between MSE and WLC using NMSP, TCP port 16113 must be allowed on the firewall. References := ( CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide )

 The two protocols used to communicate between the Cisco Mobility Services Engine (MSE) and the Cisco Prime Infrastructure network management software are HTTPS and NMSP (Network Mobility Services Protocol). HTTPS is used for secure web-based communications, while NMSP is a Cisco proprietary protocol used specifically for efficient, real-time communication between MSE and network management software like Cisco Prime Infrastructure. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

When implementing Cisco Identity-Based Networking on a Cisco AireOS controller with two ACLs where one is applied directly on the WLC interface and another referenced by ISE for a specific group policy, the resulting ACL for a user in that group would be a combination of both ACLs. The BASE_ACL applied on the corporate_clients interface acts as the default ACL for all corporate clients, while HR_ACL is specific for Human Resources users. When a Human Resources user connects, HR_ACL takes precedence but does not replace BASE_ACL; instead, it appends its rules to those of BASE_ACL resulting in an aggregated set of rules from both ACLs. References := (CCNP Enterprise Wireless Design ENWLSD 300-425 and Implementation ENWLSI 300-430 Official Cert Guide)

Graphical user interface Description automatically generated

Disabling DHCP proxy on the Cisco WLC and running the ip helper-address command under the VLAN interface to point to DHCP and the two ISE servers is the recommended action. This allows direct communication between clients and DHCP/ISE servers, which is necessary for accurate device profiling.

 Bluetooth Low Energy (BLE) is renowned for its ability to provide precise location services, especially in the context of indoor positioning systems. BLE beacons can be strategically placed throughout a facility, and when used in conjunction with a mobile application, they can deliver the high level of location accuracy required for various use cases, including navigation, asset tracking, and contextual marketing.

To separate different types of client authentication on a Cisco ISE deployment, policy sets and policy groups can be used. Policy sets allow the creation of policies based on conditions such as device type, while policy groups categorize clients for the application of specific policies. References: Cisco ISE documentation on policy sets and policy groups will have detailed information.