12-25-2011 06:32 PM - edited 03-07-2019 04:03 AM
Hi everybody.
How is everyone doing?
When we use command for example " show ip bgp neighbor 2.2.2.2 received-routes" on Router R1, does this command extract its output from BGP table?
My book says the above command will show all the routes received from neighbor 2.2.2.2 prior to any inbound filtering on R1.
That implies BGP table will contain all the routes received even those which are being filtered by inbound filtering.
Is my understanding correct?
Merry Christmas !
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12-25-2011 07:46 PM
That's correct but with one caveat, you must configure soft reconfiguration in the router:
http://www.cisco.com/en/US/docs/ios/11_3/np1/configuration/guide/1cbgp.html#wp10995
We recommend not doing so with latest IOS versions since enabling this feature forces the router to use more memory resources for BGP.
The new enhacement added to the latest IOS versions is called Route Refresh:
http://www.cisco.com/en/US/products/ps6599/products_data_sheet09186a0080087b3a.html
and the command you mentioned above will display only the filtered routes.
Regards,
Edison
12-25-2011 07:46 PM
That's correct but with one caveat, you must configure soft reconfiguration in the router:
http://www.cisco.com/en/US/docs/ios/11_3/np1/configuration/guide/1cbgp.html#wp10995
We recommend not doing so with latest IOS versions since enabling this feature forces the router to use more memory resources for BGP.
The new enhacement added to the latest IOS versions is called Route Refresh:
http://www.cisco.com/en/US/products/ps6599/products_data_sheet09186a0080087b3a.html
and the command you mentioned above will display only the filtered routes.
Regards,
Edison
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