From: Peter McCreesh (petermccreesh@gmail.com)
Date: Fri Jan 13 2006 - 10:59:24 GMT-3
Apologies,
my last post was intended to arrive before the last one you posted Top.
I was posting this while the last message came in.
If your address space in the EIGRP side of things is contiguous then a
straight forward ACL/Prefix list should do. If it isn't and there is a mix
of addresses in the same block coming from "outside" as well as "inside"
then the ACLs may have to change as the network does and may not be the most
efficient way of doing it.
I haven't come up with a better way of doing this but thats definately not
to say that there isn't one.
Regards,
Pete
On 1/13/06, Peter McCreesh <petermccreesh@gmail.com> wrote:
>
> Hi Top,
>
> didn't realise you wanted that redundancy.
> I don't see any problems with using the distance command with BGP the way
> you have it in your config.
> Good solution as far as I can see.. You would probably be best to put this
> on both R1 and R2 though to make sure you get the desired solution
> regardless of whether R1 or R2 come up first. (again, without knowing the
> full picture, i'm guessing on what the overall topology is)
>
> Regards,
>
> Pete
>
>
>
> On 1/13/06, topgun topgun <topgunrs1@yahoo.com.sg> wrote:
> >
> > Hi Peter,
> >
> > The problem is when the R1 link to L3 switch is down, the R1 will still
> > need to reach 9.9.9.9 and 99.99.99.99. I can't filter the routes coming
> > in from MPLS (which is sent by R2). At this time, there is 9.9.9.9 and
99.99.99.99
> > BGP routes
> >
> > When I bring up the R1 link to L3, the eigrp is formed. But my R1 still
> > prefer BGP routes. This is not desirable.
> >
> > I tried using distance command for EIGRP routes in BGP protocol, and
> > seem ok. Thanks to Gustavo's suggestion... :)
> >
> > e.g
> > router bgp 65007
> > distance 171 remote MPLS interface 0.0.0.0 9
> >
> > access-list 9 permit 9.9.9.9
> > access-list 9 permit 99.99.99.99
> >
> > Any comment in using this distance command in BGP?
> >
> > Thanks
> >
> > Top
> >
> >
> > *Peter McCreesh <petermccreesh@gmail.com>* wrote:
> >
> > Hi Top,
> >
> > would it be an option to filter your own nets (9.9.9.9 and 99.99.99.99)
> > out
> > of the BGP updates coming in from the MPLS cloud. You could then do a
> > soft
> > reset on your BGP neighbor so the peering will stay up but your networks
> > should then "disappear" from the BGP updates coming in to you. Probably
> > best
> > to do this on both R1 and R2
> >
> > I hope i'm understanding your problem OK
> >
> > ..Pete
> >
> >
> > On 1/13/06, topgun topgun wrote:
> > >
> > > Hi all,
> > >
> > > I am having some design issue and would like to seek some advise.
> > >
> > > I have 2 routers, and their WAN link are connected to MPLS running
> > BGP.
> > > Their LAN are connected to different L3 switch running EIGRP. The 2 L3
> >
> > > switch are connected and run EIGRP too.
> > >
> > > MPLS cloud -----------R1 -----------L3 switch
> > > I I
> > > I-------------------------R2 ----------- L3 switch
> > >
> > >
> > > R1 and R2 are two redistribution point; redistribute EIGRP to BGP and
> > BGP
> > > to EIGRP.
> > >
> > > My EIGRP cloud (L3 switches) has internal and external network, say
> > > 9.9.9.9 (internal) and 99.99.99.99 (external)
> > >
> > > R1 will prefer both 9.9.9.9 and 99.99.99.99 via L3 switch, and as
> > such, R2
> > > will be via MPLS cloud (AD BGP 20 as compared to EIGRP 90 and 170).
> > > I want R2 to use L3 as the gateway like R1.
> > >
> > > Distance cannot be used as it can't work for external eigrp routes.
> > > bgp backdoor cannot work as I have to clear the ip bgp first.
> > >
> > > Appreciate your help.
> > >
> > > Thanks
> > >
> > > Top
> > >
> > >
> > > ---------------------------------
> > > Do you Yahoo!?
> > > New and Improved Yahoo! Mail - 1GB free storage!
> > >
> > >
> > _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> >
> >
> > ------------------------------
> > Meet your soulmate!
> > *Yahoo! Asia presents
Meetic*<http://us.rd.yahoo.com/prm/pers/mt/yma_sg/tgl/*http://asia.yahoo.com/
meetic>- where millions of singles gather
This archive was generated by hypermail 2.1.4 : Wed Feb 01 2006 - 07:45:48 GMT-3