200-301 · Question #1191
What is a reason to implement LAG on a Cisco WLC?
The correct answer is C. Increase the available throughput on the link.. Link Aggregation Group (LAG) is implemented on a Cisco WLC primarily to increase the available bandwidth and provide redundancy over the aggregated links to the network infrastructure.
Question
What is a reason to implement LAG on a Cisco WLC?
Options
- AAllow for stateful failover between WLCs.
- BIncrease security by encrypting management frames.
- CIncrease the available throughput on the link.
- DEnable the connected switch ports to use different Layer 2 configurations.
How the community answered
(39 responses)- A5% (2)
- B5% (2)
- C87% (34)
- D3% (1)
Why each option
Link Aggregation Group (LAG) is implemented on a Cisco WLC primarily to increase the available bandwidth and provide redundancy over the aggregated links to the network infrastructure.
LAG provides redundancy for physical links to a single WLC, but it does not facilitate stateful failover between two separate WLCs; that requires WLC redundancy protocols.
LAG does not inherently increase security by encrypting management frames; encryption is a separate security feature configured at higher layers or through specific security protocols.
LAG bundles multiple physical links into a single logical channel, which effectively combines the bandwidth of all aggregated links, thereby increasing the total throughput capacity between the WLC and the connected switch.
For LAG to function correctly, all bundled links must have identical Layer 2 configurations on both the WLC and the connected switch, making different configurations an incorrect reason for implementation.
Concept tested: WLC LAG benefits
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/8-5/config-guide/b_cg85/m_lag_config.html
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