From: Albert Lu (albert_lu@optushome.com.au)
Date: Fri Sep 06 2002 - 05:26:40 GMT-3
Also want to note that the 'no sych' command is required if you are using
OSPF, since there is a extra requirement that the OSPF route and BGP route
have to be sourced from the same router-id. Take a look at the below CCO
info.
http://www.cisco.com/warp/customer/459/25.shtml
Paths marked as "not synchronized" in the show ip bgp <longer-prefixes>
output. If BGP synchronization is enabled, which it is by default in Cisco
IOS. Software, there must be a match for the prefix in the IP routing table
in order for an internal (iBGP) path to be considered a valid path. If the
matching route is learned from an OSPF neighbor, its OSPF router ID must
match the BGP router ID of the iBGP neighbor. Most users prefer to disable
synchronization using the no synchronization BGP subcommand.
Regards,
Albert
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
ping pong
Sent: Friday, September 06, 2002 5:02 PM
To: ccielab@groupstudy.com
Subject: Bgp synchronization
OK.. I have a question about Bgp and when it selects the best route in the
bgp table. I create a loop back interface such as 160.10.10.10 255.255.255.0
in the 24 subnet. Then in the bgp process i put network 160.10.10.0 mask
255.255.255.0 , but the route isn't choosen as the best route in the bgp
table. I have to put no sync before it adds this sign <. I'm just wondering
why
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