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.)
- All physical switch interfaces connected to the WLC distribution ports must be grouped into a single EtherChannel interface.Cevap
- The switch ports connected to the WLC physical ports must be configured with identical attributes, including 802.1Q trunking mode and allowed VLAN lists.Cevap
- CThe upstream switch must split the WLC connections into multiple separate EtherChannel groups to isolate dynamic client VLAN traffic across individual controller ports.
- DThe switch interfaces connected to the WLC must be configured as Layer 2 access ports assigned to the native VLAN to handle untagged management traffic.
Cevap
The upstream switch must group all physical interfaces connected to the controller into a single EtherChannel bundle, and all member switch ports must share identical trunking and VLAN configurations.
When Link Aggregation (LAG) is enabled on a Cisco Wireless LAN Controller, all physical distribution system ports are combined into a single logical link. Consequently, the connected upstream switch must aggregate all corresponding physical ports into a single matching EtherChannel (port-channel) group. Additionally, because EtherChannel bundle members must operate with consistent interface parameters, all participating switch ports must share identical configuration attributes, such as 802.1Q trunk mode and allowed VLAN lists.
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Anahtar Kavram
WLAN Infrastructure Connections and Switch Link Aggregation (LAG)
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