Re: [j-nsp] BGP questions

From: Stacy W. Smith (stacy@conxion.net)
Date: Thu May 03 2001 - 11:06:33 EDT


At 10:32 AM 5/3/2001 -0400, john5725 wrote:
>Hi,All,
>For BGP, is there any feature which is the same as Cisco:
>1.next-hop self?

There is no neighbor level equivalent to this IOS command. Resetting nexthop must be done via policy. Use the policy action command of "nexthop self" or "nexthop-self". (An annoying change depending on which version you're running).

A note on this. Under IOS, when a BGP route reflector reflects a route to one of its clients, it will not reset the next hop even if you have "next-hop self" configured. This is a "feature" that some people actually depend on. JUNOS doesn't exhibit the same "feature". It will overwrite the next hop on reflected routes. If that's not what you want, then you should write your policy accordingly.

>2.sync?

JUNOS doesn't support synchronization. It's always using the IOS equivalent of "no synchronization".

>3.local-address = update source?

Yep.

>4.network ?How JunOS advertise the BGP routes?
>It seems it should use export policy to do it? Just like RIP, only listens not speaks by default.

Yes, you must inject routes into BGP via policy. There is no equivalent to an IOS "network" statement.

--Stacy



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