NMC #2 -> BGP advertise-map

From: Dennis J. Hartmann (dennisjhartmann@hotmail.com)
Date: Fri Apr 22 2005 - 19:11:51 GMT-3

    I'm going through the NMC scenario #2. The scenario is like this.... we
only want to advertise the 7.7.7.0 network from an external AS to another
external AS if the router of 5.5.5.0 is lost.
 
    I'm 99% sure that the configuration below is a mistake because the
network that we'll advertise is 6.6.6.0, not the 7.7.7.0 the scenario calls
for. Please let me know if I'm missing something here.
 
router bgp 100
 no synchronization
 bgp log-neighbor-changes
 neighbor 172.16.34.4 remote-as 400
 neighbor 172.16.34.4 advertise-map Advertise-if non-exist-map
If-not-present
 
access-list 17 remark ------ If-not-present ---------------------
access-list 17 permit 5.5.5.0 0.0.0.255
access-list 18 remark ------ Advertise-if -----------------------
access-list 18 permit 6.6.6.0 0.0.0.255
access-list 18 remark -------------------------------------------

route-map If-not-present permit 10
 match ip address 17

route-map Advertise-if permit 10
 match ip address 18

 

Sincerely,

 

Dennis J. Hartmann

White Pine Communications

dh8@pobox.com

CCSI#23402/CCIP/CCNP/CCDP/CCNA/CCDA

Cisco IP Voice Support & Design Specialist

Cisco Optical, VPN & IDS Specialist

MCSE

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