From: Annu Roopa (annu_roopa@xxxxxxxxx)
Date: Thu Jun 27 2002 - 18:52:20 GMT-3
Group,
I understand why BGP synch is needed but have some
clarifications.When we have scenario as below
R10---------R1------R3-------R2---------R20
Ebgp iBGP EBGP
and R10 is in AS 100 and R1/R2/R3 in As200 and R20 in
As300.In this scenario R2 will not advertise routes
learnt thru R10 to R20 without having the routes in IP
table right ??? The questions are:
1. Assuming there is no IGP on R1/R2/R3 what are the
options of having the routes in R2 in its IP table.
Should we should have static routes for all networks ?
Any other way.
2. When BGP (say on R2) looks for synchronization with
an IGP what does it look for as a match?? - the
network,mask and type (i mean IGP).They all should
match in IP table to what is advertised by BGP from
R10.
The reason i ask this is there are times when i have
seen the route in IP table is /16 bit but /24 in BGP
table (without *>) and it does not work.Also when the
route is say OSPF E2 type is does not work.
3.If there is are multiple entries in BGP table and i
do a traceroute will the path taken be the (*>, valid
best path) or according to the IP table. I guess *>
path should match up with IP table path am i right ?
in understanding this.
=====
Thanks in advance for ur time and replies.
Annu.
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