bgp communities lab

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taborn
Posts: 4
Joined: Mon Nov 27, 2017 6:03 am

bgp communities lab

Post by taborn » Tue Dec 05, 2017 7:48 am

I am studying for CCIE-RS and doing all the case studies within routing tcp/ip vol 2 by Doyle and Carroll.

The first lab that is being released is on BGP communities (pg 270).

Topology
'''''''''''''''''''''''''
https://imgur.com/a/1W1ca

1/
From AS2000 advertise 10.2.1.0, 10.2.2.0 and 10.2.3.0/24 into AS100.

2/
Using BGP communities, ensure that AS200,300,400,500,600 do NOT receive the route 10.2.2.0.

Your output should look something like the following (sh ip bgp on router NEVADA):
https://imgur.com/a/Z4wcy

NOTE: The file should have the configs and the topology. Let me know if it is not right and I will re-upload it.

BONUS TASKS:
A/
As the book states, from AS2000 you are controlling what AS100 does. Suppose you did want to advertise 10.2.2.0 to Nevada. How would you do this using community configurations on router Idaho?

B/
If you have completed task A, Nevada should have all three routes. At present, Idaho is advertising all three routes to Colorado. How would you influence (from Idaho router) Colorado in such a way that he (Colorado router) advertises only 10.2.2.0 to Nevada and does not advertise 10.1.1.0 and 10.1.3.0? (HINT: use no advertise on Idaho router).
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andreysamign
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Joined: Fri May 18, 2018 8:57 pm
Location: Россия
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bgp communities lab

Post by andreysamign » Thu May 24, 2018 12:55 am

Hi dear How filter prefixes For out and in in bgp session cisco??

BrianMox
Posts: 4
Joined: Wed Jun 06, 2018 9:52 am
Location: Россия
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bgp communities lab

Post by BrianMox » Tue Jun 26, 2018 8:28 pm

Hi,

Anyone know what kind of mechanism the XR uses for BGP slow peer detection? or if something similar even exists on the XR...

Thanks,
R.

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