help in BGP routing

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04-18-2011 02:04 PM - edited 03-06-2019 04:40 PM
dear all ...
i have switch L3 cisco SW-C6500 ..... i connect Router1(R1) to fasteth1 ...and Router3(R3) to fasteth2
the network between fasteth1 and R1 >>>>>> 10.10.10.0/28
the network between fasteth2 and R3 >>>>>> 10.20.10.0/28
R1 connect to R2 withe network >>>> 10.10.12.0/28
R3 connect to R4 withe network >>>> 10.20.12.0/28
now kindly can somebody help me to configure BGP routing in this network
regards
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04-18-2011 02:28 PM
tariq, I think you'll need to provide more information about your routing requirements before someone could help you configure it. Are R2 and R4 your ISP or another entity? Are R1 and R3 your routers? Is this a lab or a real life scenario? Are you intending to run eBGP between R1 and R2 and between R3 and R4? And then iBGP between R1 and R3?
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04-18-2011 02:38 PM
dear ..
R1 and R3 routers ..... this is a lab ... when i can use ebgp and when i can use ibgp ?????
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04-19-2011 12:20 AM
when i can use ebgp and when i can use ibgp
eBGP: the 2 BGP peers are in different ASes
iBGP: the 2 BGP peers are in the same AS
Regards.
Alain.
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04-18-2011 02:28 PM
Are you trying to configure IBGP or EBGP?
Usually, with IBGP, you use the loopback addresses and with EBGP physical address.
Before you confiure BGP, make sure you have connectivity between r1 and r2 by ping the addresses
then you can use the sample for EBGP
on r1
router bgp 65000
bgp log-neighbor-changes
neighbor 10.10.12.1 remote-as 65412
on r2
router bgp 65412
bgp log-neighbor-changes
neighbor 10.10.12.2 remote-as 65000
HTH
