From: Yasser Abdullah (yasser@alharbitelecom.com)
Date: Sun Jun 29 2003 - 04:07:04 GMT-3
BGP auto summarize networks to the classfull boundaries by default.
Disable this behavior by using the following BGP config command:
no auto-summary
Brgds,
Yasser
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Yunjie Chen
Sent: Sunday, June 29, 2003 9:52 AM
To: CCIE Group
Subject: BGP question
Hi,
a quick question for BGP....
R7 and R4 are directly connected and running BGP in between...
R7 has three loopback interfaces who are 150.100.0.7/24, 160.100.0.7/24,
170.100.0.7/24
In order to let R4 see these routes...under R7's bgp configuration i put
network 150.100.0.7 mask 255.255.255.0
network 160.100.0.7 mask 255.255.255.0
network 170.100.0.7 mask 255.255.255.0
But when i do show ip bgp route at R4, these three routes are showing
r4#sho ip route bgp
B 170.100.0.0/16 [20/0] via 172.17.59.238, 00:00:17
172.17.0.0/16 is variably subnetted, 9 subnets, 5 masks
B 172.17.0.0/16 [20/0] via 172.17.59.238, 00:00:17
B 160.100.0.0/16 [20/0] via 172.17.59.238, 00:00:17
B 150.100.0.0/16 [20/0] via 172.17.59.238, 00:00:17
Why these three routes's mask change from /24 to /16? Both R7 and R4 has
ip subnet zero configured...
Thanks a lot!
Yunjie
This archive was generated by hypermail 2.1.4 : Fri Jul 04 2003 - 11:11:14 GMT-3