I am trying to figure out how access-list work from a bgb environment using

Unanswered Question
Apr 27th, 2007


I am trying to figure out how access-list work from a bgb environment using cisco 2821 flash:c2800nm-advipservicesk9-mz.124-7a.bin

Is it ingress or egress from the Ethernet or serial interface that access-list 6 is applied?

router bgp 200

no synchronization

bgp log-neighbor-changes

network mask

network mask

neighbor remote-as 400

no auto-summary

Access-list 6 remark Test system deny

Access-list 6 deny

Access-list 6 permits any

Thx you



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royalblues Fri, 04/27/2007 - 07:42


With the config you provided, the access-list doesn't seem to be influencing the BGP at all.


ccoletti Fri, 04/27/2007 - 08:25


That alarming, would you know where there is a link that can explain

Access-list and how they are applied to a bgp system. Thank you for the quick



Harold Ritter Fri, 04/27/2007 - 09:00


As Narayan indicated, the access-list is currently apply to you BGP config.

What is it you are trying to achieve. Are you trying to filter traffic, in which case you would apply the access-list inbound or outbound on a given interface or are you trying to filter routing updates, in which case the access-list would be applied either via the "neighbor distribute-list" or "route-map" command.

Hope this helps,

ccoletti Fri, 04/27/2007 - 10:19

Hello ,

i understand.

thank you for the quick responce.



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