200-301 · Question #1429
Which standard is required when more than one distribution system port and only one IP address are configured for a Cisco WLC?
The correct answer is A. 802.3ad. When a Cisco Wireless LAN Controller (WLC) has multiple distribution system ports configured with a single IP address, the 802.3ad standard is required to bundle these ports.
Question
Options
- A802.3ad
- B802.1q
- C802.1d
- D802.1af
How the community answered
(57 responses)- A93% (53)
- B4% (2)
- C2% (1)
- D2% (1)
Why each option
When a Cisco Wireless LAN Controller (WLC) has multiple distribution system ports configured with a single IP address, the 802.3ad standard is required to bundle these ports.
The 802.3ad standard, also known as Link Aggregation Control Protocol (LACP), is used to bundle multiple physical Ethernet links into a single logical channel. This is necessary for a Cisco WLC when multiple distribution system ports share one IP address to provide redundancy and aggregate bandwidth, presenting a single logical interface to the network.
802.1q is a standard for VLAN tagging and does not address port aggregation.
802.1d is the Spanning Tree Protocol (STP) standard, which prevents network loops but is not used for port bundling.
802.1af is not a commonly recognized networking standard for port aggregation in this context.
Concept tested: WLC port aggregation (LACP/802.3ad)
Source: https://www.cisco.com/c/en/us/td/docs/wireless/controller/7-0/configuration/guide/c70wlc/c70wlc_ports.html
Topics
Community Discussion
No community discussion yet for this question.