BGP Question

yogijain · Created Jun 28, 2021 11:56:09

Hi IndianKid
here is the answer for your query :

If the next hop of a route imported to the BGP routing table is 0.0.0.0, the same route already exists locally. The imported route is not a new route but the number of imported routes increases.

This route will not be selected as an optimal route by the IP routing table; therefore, it does not matter what the value of the next hop is.

so if next hop is default 0.0.0.0 , answer should be Yes

Thanks

jason_hu · Created Jun 28, 2021 07:23:41

Hello,
We're working on your problem. Please be patient.

hemin88 · Created Jun 28, 2021 08:08:16

Hi mate,

I am sure experts will answer better than me, but I think it could be both:

- If it was same, the route will not be selected as an optimal route by the IP routing table, since its exists and it won't count as new route, but will increase only number of routes.

- If it was different, the new route will be added to the RT.

Murat87 · Created Jun 28, 2021 10:23:57

By default BGP update from EBGP doesn't change nexthop address. By default, a device changes the next-hop address of a route imported from an IGP to the address of the interface connecting the device to its peer when advertising the route to an IBGP peer. So It's false.

yogijain · Created Jun 28, 2021 11:56:09

Hi IndianKid
here is the answer for your query :

If the next hop of a route imported to the BGP routing table is 0.0.0.0, the same route already exists locally. The imported route is not a new route but the number of imported routes increases.

This route will not be selected as an optimal route by the IP routing table; therefore, it does not matter what the value of the next hop is.

so if next hop is default 0.0.0.0 , answer should be Yes

Thanks

andersoncf1 · Created Jun 28, 2021 17:42:28

Good answer

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