bgp communities lab

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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).


From AS2000 advertise, and into AS100.

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

Your output should look something like the following (sh ip bgp on router NEVADA):

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

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

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 to Nevada and does not advertise and (HINT: use no advertise on Idaho router).
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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??

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bgp communities lab

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


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


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bgp communities lab

Post by byronLew » Tue May 14, 2019 8:10 pm

Dear All,

NX-OS route distribution require a route-map.

So, I am trying to redistribute lot of connected and static routes to BGP in a VRF.

Is there any solution without making a prefix-list with all the static and connected subnets ?

I tried the configuration below but it does not work :

route-map static-to bgp permit 10

match route-type local

Any idea, please ?


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