From: Sergey Golovanov (sergey.golovanov@iementor.com)
Date: Sat Mar 31 2007 - 14:06:48 ART
No, it's not true. If using ACL, always use Extended ACL. And try to always
use a "positive" ACL, that only permits the networks that you are trying to
specify for the non-exist behavior
----------------------------------------------------------------------
Sergey Golovanov, CCIEx5 (R&S/Security/Voice/Service Provider/Storage)
ieMentor Instructor and Content Developer
sergey.golovanov@iementor.com
http://www.iementor.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Bit
Gossip
Sent: Saturday, March 31, 2007 9:25 AM
To: ccielab@groupstudy.com
Subject: BGP conditional advert - non-exist-map
Group,
Is it true that the match condition in a non-exist-map can be ONLY a
prefix-list?
The 2 flavors of route-map T5.5NE listed below match one and the same
prefix:
Rack1R2(config-route-map)#do show ip bgp route-map T5.5NE
Network Next Hop Metric LocPrf Weight Path
*> 136.1.23.0/24 0.0.0.0 0 32768 i
but only the one with the prefix-list match works as a non-exist map.
The other one with the acl just advertise the prefix no matter what
Thanks,
Luca.
PS: what about exist-map?
router bgp 300
neighbor 136.1.245.5 advertise-map T5.5 non-exist-map T5.5NE
!
ip prefix-list T5.5NE seq 5 permit 136.1.23.0/24
!
ip access-list standard T5.5NE
permit 136.1.23.0
!
!
1 ) ~~~~~~~~~~~~~~~~~~~~~~~~~~
route-map T5.5NE permit 10
match ip address prefix-list T5.5NE
2) ~~~~~~~~~~~~~~~~~~~~~~~~~~~
route-map T5.5NE permit 10
match ip address T5.5NE
!
This archive was generated by hypermail 2.1.4 : Sun Apr 01 2007 - 06:35:53 ART