From: Chua, Parry (Parry.Chua@xxxxxxxxxx)
Date: Mon Mar 18 2002 - 05:05:05 GMT-3
I think when you do redistribute connected, it is like import route into the bg
p, it is like
incomming.
When you use neigh x.x.x.x distri ... routemap abc out
Now it is the outgoing advertise to peer.
Parry Chua
-----Original Message-----
From: Bhisham Bajaj [mailto:bhishambajaj@yahoo.com]
Sent: Friday, March 15, 2002 7:03 PM
To: Chua, Parry; ccielab@groupstudy.com
Subject: RE: Bgp the diffrent ways to do a thing
I add a route-map to the redistribute connected
and with the route map I match some access-list and
set the set as-path prepend xxx
It only is advertises the routes that match the
access-list but does not add the as-path to the
network
So I add the same route-map to the neighbor commmand
and the as-path get prepended
So what is the route map being used of with the
redistribute command just to filter what network will
be advertised then what is the difference if I use the
distribute-list 20 out connected.
Does the route map with the redistribution command be
used to set some thing or only used a a filter when
redistributing
BB
--- "Chua, Parry" <Parry.Chua@compaq.com> wrote:
> One of the possible condition is that assume there
> are several neigh's connect via ethernet or it
> happen to be the common path.You may want to control
> some route that to or from all neigh. This may
> allow you to do other control on per neigh by making
> use of neigh x.x.x.x.x.
>
> > Parry Chua
> >
> >
>
>
> -----Original Message-----
> From: Bhisham Bajaj [mailto:bhishambajaj@yahoo.com]
> Sent: Friday, March 15, 2002 3:57 PM
> To: ccielab@groupstudy.com
> Subject: Bgp the diffrent ways to do a thing
>
>
> Bgp has a lot of ways to get what u want
> But I want to understand what is the internal
> difference by using the different ways
>
> Neighbor x.x.x.x advertise-map
> Neighbor x.x.x.x unsupress-map
> Neighbor x.x.x.x route-map
> Neighbor x.x.x.x filter-list
> Neighbor x.x.x.x prefix-list
> Neighbor x.x.x.x distribution-list
>
>
> Distribution-list ( x ) (in/out) (type/num)
>
> aggregate-address x.x.x.x y.y.y.y advertise-map
> aggregate-address x.x.x.x y.y.y.y suppress-map
> aggregate-address x.x.x.x y.y.y.y route-map
>
> summary-address x.x.x.x y.y.y.y
>
> all this command do some think different
> and I am out to get a few ans
>
> let me start with the distribution-list
>
> distribution-list may be the best way to filter
> routes
> based on the network number
>
> BGP is a routing protocol based on TCP session. U
> have
> to define static neighbor on both the routers to get
> a
> BGP peer up . now if we want to filter what route go
> to a neighbor or can come from a neighbor we can use
> a
> lot of methods one would me to apply a
> distribution-list to the neighbor command . this way
> we can control what routes cant be learned from that
> neighbor or what routes can go to that neighbor this
> way we can filter routes based on network address
>
> This is ok but I want to understand what is the use
> of
> the command distribution-list 1 ( in/out ) eth 0
> Under bgp with rip it makes a lot of use as we
> filter
> based on inter but in bgp my neighbor can have
> multiple routes by multiple interface so where and
> why
> would I need to use a bgp route filter based on what
> interface the route comes in or goes out
>
>
> BB
>
>
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