From: Kenneth Patterson (Kenneth.Patterson@xxxxxxx)
Date: Thu Apr 26 2001 - 15:58:45 GMT-3
If I want to setup ISDN dial backup for a frame relay
line which supports IP and IPX, do I setup a dialer 0
and dialer 1 for each protocol or are they on the same
dialer interface?
-----Original Message-----
From: Vladimir Shchutski [mailto:vshchutski@yahoo.com]
Sent: Wednesday, April 25, 2001 11:02 AM
To: Jerry Hutcheson; Masood Malik; Chia Kim Seng,
Consultant,
SCSNW-Sales; Dean, Justin; ccielab@groupstudy.com
Subject: Re: BGP filtering without IP address Filters
Will try to make it clear.
r1#
router bgp 100
neighbor 1.1.1.1 remote-as 100 #IBGP to r2
neighbor 2.2.2.2 remote-as 200 #EBGP to r3
neighbor 1.1.1.1 send-community
neighbor 2.2.2.2 send-community
route-map SET_NO_EXPORT permit 10
match ip address 1
set community no-export
route-map SET_NO_EXPORT permit 10
access-list 1 ..........
1) R1 won't pass the the route to R3
neighbor 1.1.1.1 route-map SET_NO_EXPORT in
2) __Only__ R2 won't pass the route to other AS
neighbor 1.1.1.1 route-map SET_NO_EXPORT out
3) The route won't be sent out of AS100
neighbor 2.2.2.2 route-map SET_NO_EXPORT in
4) __ASK___ AS200 not to pass the route to other AS
neighbor 2.2.2.2 route-map SET_NO_EXPORT out
Regards,
Vladimir
--- Jerry Hutcheson <jhutches@cisco.com> wrote:
> Massod,
>
> If the requirement is to not allow your own local AS
> (100) to be a transit AS, and you use the community
> no export would you use a send-community out or in,
> at the ebgp peer (R2)? I have heard it both ways it
> seems to me that it should be a send community in.
>
> thanks,
>
> jerry
>
> and At 09:04 AM 4/25/2001 +1000, Masood Malik
> wrote:
> >RE: BGP filtering without IP address FiltersHi,
> >
> >The main difference between no-export and
> no-advertise is as follows.
> >
> >When no-export community is set in an AS for a
> route it will be passed through
> >all the routers in the same AS (IBGP) and also to
> the next neighbour AS
> >(EBGP). However, this neighbour AS will not pass it
> to its up stream AS.
> >
> >Thus no-exports cannot work in the same AS.
> >
> >When you set no-advertise community on a router in
> any AS, the route will not
> >be advertised to any neighbour AS whether it is
> same (IBGP) or different
> >(EBGP).
> >
> >e.g. if you have following scenario
> >
> >R1 (AS100)---R2 (AS100)----R3(AS200)------R4(AS300)
> >
> >If no-export community is set on a route entering
> R1. You will see the route
> >in R2 and R3 but not in R4.
> >
> >If no-advertise community is set on a route
> entering R1. The route will be
> >missing in R2, R3 or R4.
> >
> >Note: In order for all this to work correctly,
> ensure setting send-community
> >to the neighour AS peers in each router.
> >
> >regards
> >Masood
> > ----- Original Message -----
> > From: Chia Kim Seng, Consultant, SCSNW-Sales
> > To: 'Masood Malik' ; Vladimir Shchutski ; Dean,
> Justin ;
> >ccielab@groupstudy.com
> > Sent: Tuesday, April 24, 2001 11:46 AM
> > Subject: RE: BGP filtering without IP address
> Filters
> >
> >
> > Can I use no-export community instead?
> >
> > Regards
> > Chia Kim Seng
> >
> > SCS Networks Pte Ltd
> > 7 Bedok South Road
> > Singapore 469272
> > Tel : 065-2403164
> > Fax: 065-2403110
> >
> >
> >
> > -----Original Message-----
> > From: Masood Malik [mailto:malikm24@hotmail.com]
> > Sent: Tuesday, April 24, 2001 6:21 AM
> > To: Vladimir Shchutski; Dean, Justin;
> ccielab@groupstudy.com
> > Subject: Re: BGP filtering without IP address
> Filters
> >
> >
> >
> > set no-advertise community for 1.1.1.1 on R2
> >
> > regards
> > Masood
> >
> > ----- Original Message -----
> > From: "Vladimir Shchutski" <vshchutski@yahoo.com>
> > To: "Dean, Justin" <Justin.Dean@nrtinc.com>;
> <ccielab@groupstudy.com>
> > Sent: Tuesday, April 24, 2001 7:42 AM
> > Subject: Re: BGP filtering without IP address
> Filters
> >
> >
> >
> > > try community names.
> > >
> > > Regards,
> > > Vladimir.
> > >
> > > --- "Dean, Justin" <Justin.Dean@nrtinc.com>
> wrote:
> > > > I am trying to have R2 filter the 1.1.1.1
> from being
> > > > advertised to R3. The
> > > > requirement is that you cannot filter by ip
> address.
> > > > I thought I could tag
> > > > it with a route-map at R1 then match tag at
> R2 and
> > > > dump it, but I get an
> > > > error trying to put the set tag in the
> route-map and
> > > > apply it to the
> > > > neighbor outbound. I also tried to prepend
> as's, but
> > > > since R1 and R2 are in
> > > > same as the route shows as "i". Any Ideas?
> justin
> > > >
> > > >
> > > > 1.1.1.1-------R1----IBGP---R2---EBGP---R3----
> > > > **Please
> > > >
> read:http://www.groupstudy.com/list/posting.html
> > > >
> > >
>
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