WLAN Infrastructure Connections and LAG
22 questions
A network administrator is establishing link aggregation between a Cisco AireOS Wireless LAN Controller (WLC) and an upstream Cisco Catalyst switch to increase bandwidth and provide interface redundancy. The administrator configures ports GigabitEthernet 1/0/1 through 1/0/4 on the Catalyst switch using the command 'channel-group 10 mode active' and enables LAG on the WLC. However, after the WLC reboots, the EtherChannel fails to negotiate successfully. Which condition is causing this link aggregation failure?
An administrator needs to enable Link Aggregation (LAG) on a Cisco Wireless LAN Controller (WLC) connected to an upstream switch stack. Place the configuration and operational steps in the correct chronological sequence from start to finish.
Drag items to arrange them in the correct order
A network engineer transitions several Cisco Lightweight Access Points (LAPs) deployed at a branch office from default Local mode to FlexConnect mode with local switching enabled for the corporate employee wireless network. The switch ports connected to these APs are currently configured as Layer 2 access ports assigned to VLAN 10 (Management). Following the transition, AP-to-WLC CAPWAP control connectivity remains healthy, but wireless clients connecting to the employee SSID (mapped to VLAN 20) fail to obtain IP addresses or communicate with local resources. Which configuration change must be applied to the access switch ports to restore client connectivity on the employee WLAN?
A network engineer is configuring Link Aggregation (LAG) on a Cisco Wireless LAN Controller (WLC) connected to an access layer switch stack. The deployment includes central site Local mode APs and remote branch FlexConnect APs using local traffic switching. Which TWO configuration statements correctly describe the requirements and behavior of this WLAN infrastructure connection setup? (Select two.)
Select all that apply
An enterprise network requires redundant, high-bandwidth connectivity between a Cisco AireOS Wireless LAN Controller (WLC) distribution port bundle and a Cisco Catalyst distribution switch. The network team decides to enable Link Aggregation (LAG) on the controller. Which TWO switch-side configurations and behaviors are mandatory for this infrastructure connection to operate correctly? (Select two.)
Select all that apply
An enterprise wireless administrator is integrating a Cisco 5520 Wireless LAN Controller (running AireOS) with a Cisco Catalyst switch stack. The administrator connects four physical distribution system ports on the controller to switch interfaces GigabitEthernet1/0/1 through 1/0/4. The switch interfaces are configured as an 802.1Q trunk bundle using the command `channel-group 1 mode active`. Although Link Aggregation (LAG) has been enabled on the WLC and the controller has been rebooted, the EtherChannel fails to form and all controller distribution links remain down. Which modification on the Catalyst switch stack will resolve this connection failure?
When implementing Link Aggregation (LAG) between a Cisco Wireless LAN Controller and an upstream switch, specific configuration rules apply to the physical interfaces and channel grouping. Which two statements describe valid operational characteristics or configuration requirements for this LAG deployment? (Select TWO.)
Select all that apply
A network administrator enables Link Aggregation (LAG) on a Cisco Wireless LAN Controller (WLC) to combine its physical distribution system ports into a single logical interface. How must the connected ports on the upstream switch be configured to establish this link aggregation successfully?
A network technician is installing a new Cisco Lightweight Access Point (LAP) that will operate in default Local mode. The access point connects directly to an access-layer Catalyst switch port and will tunnel all user traffic back to the central Wireless LAN Controller (WLC) via CAPWAP. Which switch port configuration is required to properly support this access point connection?
An enterprise network deployment incorporates a Cisco Wireless LAN Controller (WLC) connected via four physical distribution system ports to a Cisco Catalyst switch stack. The network engineer enables Link Aggregation (LAG) globally on the controller and reboots the device. On the switch stack, the engineer attempts to establish the EtherChannel by configuring `channel-group 1 mode active` across ports GigabitEthernet 1/0/1 through 1/0/4. Following the WLC reboot, the controller loses all network management connectivity, and the switch logs indicate that the port-channel interface is down due to a negotiation failure. Which switch configuration modification will restore network connectivity while maintaining LAG operational on the controller?
A network administrator is preparing to bundle the physical distribution system ports on a Cisco Wireless LAN Controller (WLC) to increase bandwidth and redundancy toward an upstream Cisco Catalyst switch stack. Which two requirements or operational characteristics apply when Link Aggregation (LAG) is enabled on the Cisco WLC?
Select all that apply
A network engineer is implementing Link Aggregation (LAG) using IEEE 802.3ad LACP between a Cisco Catalyst 9800 Series Wireless Controller and an upstream Cisco Catalyst 9300 switch stack. Place the following implementation and verification steps in the correct chronological order required to establish the infrastructure link.
Drag items to arrange them in the correct order
An enterprise deploys a Cisco Lightweight Access Point (LAP) operating in FlexConnect mode at a remote branch office. The AP is configured to perform local switching for WLANs mapped to VLAN 10 (Sales) and VLAN 20 (Guests). The AP management traffic must be assigned to VLAN 100 and transmitted untagged over the physical link. The connected Cisco Catalyst switch port is configured as an 802.1Q trunk. Which switchport configuration command must be applied to the switch port to ensure AP management traffic and locally switched WLAN traffic function properly?
A network administrator is connecting a Cisco Wireless LAN Controller (WLC) to an upstream Cisco Catalyst switch using multiple physical distribution system ports. To increase throughput and provide interface redundancy, the administrator enables Link Aggregation (LAG) on the controller. Which two configuration requirements must be met on the upstream switch to support proper EtherChannel operation with the WLC? (Select two.)
Select all that apply
A network administrator is connecting four physical distribution system ports of a Cisco AireOS Wireless LAN Controller to an upstream Cisco Catalyst switch. Link Aggregation (LAG) is enabled on the controller to increase bandwidth and provide redundancy. Which port-channel configuration must be applied to the upstream Catalyst switch interfaces?
A network administrator needs to deploy Link Aggregation (LAG) on a Cisco AireOS Wireless LAN Controller (WLC) connected to an upstream Cisco Catalyst switch. Place the operational steps required to enable and establish the LAG connection in the correct sequential order from first to last.
Drag items to arrange them in the correct order
An infrastructure team is provisioning access layer switch interfaces for newly deployed Cisco Lightweight Access Points (LAPs) operating strictly in Local mode. All wireless client traffic will be encapsulated within CAPWAP tunnels back to the central Wireless LAN Controller (WLC). Which switch port configuration must be applied to the switch interfaces connecting directly to these Access Points?
A network engineer is connecting multiple physical distribution system ports of a Cisco AireOS Wireless LAN Controller (WLC) to an upstream Cisco Catalyst switch using Link Aggregation (LAG). Which two configuration requirements must be implemented on the switch interfaces to establish successful aggregation and traffic transport? (Select two.)
Select all that apply
A network administrator is connecting a Cisco Catalyst 9800 Series Wireless LAN Controller to an upstream Cisco Catalyst switch using link aggregation (LAG) with LACP. In what logical order should the administrator execute the steps on the Catalyst switch to provision the EtherChannel interface and physical member ports?
Drag items to arrange them in the correct order
A network engineer is configuring link aggregation (LAG) on a Cisco Wireless LAN Controller (WLC) to connect to a Cisco Catalyst switch stack. The WLC distribution system ports are connected to ports GigabitEthernet1/0/1 through GigabitEthernet1/0/4 on the switch stack.
Which behavior accurately describes how the Wireless LAN Controller manages interface traffic and link failures when LAG is enabled?