October 2012
Intermediate to advanced
902 pages
28h 9m
English
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Chapter Review Answers
Answer: B. As of Junos 11.4, only two PE routers can participate in MC-LAG.
Answer: B. When using MC-LAG in
active-activemode, you must use the Trio-based MPC line cards.Answer: A. Recall that the
service-idis used to uniquely identify routing instances across PE routers when forming a MC-LAG instance. Although as of Junos 11.4, MC-LAG d doesn’t support routing instances; theservice-idmust match between both PE routers under[switch-options service-id].Answer: B. The
chassis-idis used to uniquely identify each PE router when forming a MC-LAG instance. Each PE router needs a differentchassis-id.Answer: A,B. The
mc-ae-idhas two purposes: glue together MC-LAG interfaces across different PE routers and uniquely identify different logical MC-LAG interfaces. For example, ifCE1was connected toPE1:xe-0/0/0andPE2:xe-0/0/0, themc-ae-idwould be 1. IfCE2was connected toPE1:xe-0/0/1andPE2:xe-0/0/1, themc-ae-idwould be 2.Answer: A,B,D. Redundancy groups are a collection of MC-AE IDs that share the same VLAN IDs. Redundancy groups act as a broadcast medium between PE routers so that application messages are concise and efficient. In this example, the application would be MAC address updates.
Answer: A. Only MC-LAG in
active-activemode requires an ICL. The ICL is used as a Layer 2 link between the two PE routers so that as frames arrive from the CE, both the PE routers can handle the frames efficiently.Answer: D. The MC-LAG node that’s currently in the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.