From: CCIE FUN (ccieexam2002@xxxxxxxxx)
Date: Fri Aug 23 2002 - 15:18:24 GMT-3
well can't you run any IGP between these routers,
something like RIP or EIGRP. include the LINKS,
LOOPBACKS as part of the routing protocol networks.
i think this should work that, use the IGP's and then
do EBGP multihop.
thanks
--- Donny MATEO <donny.mateo@sg.ca-indosuez.com>
wrote:
> One problem. How do rtrA initiate the tcp connection
> to router B when it doesn't have any route to
> 2.2.2.2 ?
> The connection between the two router are eBGP and
> they are not running iBGP.
>
> Donny
>
>
>
>
>
> CCIE FUN
>
>
> <ccieexam2002@yah To:
> Mhlanga Libone <libone.mhlanga@nhsia.nhs.uk>,
> "'Donny MATEO'"
> oo.com>
> <donny.mateo@sg.ca-indosuez.com>,
> ccielab@groupstudy.com
>
> cc:
>
>
> 23-08-2002 03:23
> Subject: RE: eBGP Multihop Load Balancing
>
>
>
>
>
>
>
>
>
>
>
> under the router bgp config
> you could specify the loopback address subnet
> and also include the subnet for the links between
> RTRA
> and RTRB
> here is how it will be for RTRA
>
> router bgp xxxx
> network 1.1.1.1 mask 255.255.255.255
> network 10.1.1.0 mask 255.255.255.252
> network 10.1.1.4 mask 255.255.255.252
> neighbor 2.2.2.2 ebgp-multihop 2
> neighbor 2.2.2.2 update-source Loopback0
> neighbor 2.2.2.2 weight 1000
> neighbor 6.6.6.6 ebgp-multihop 2
> neighbor 6.6.6.6 update-source Loopback0
>
>
> the similar config will be apply to RTRB with
> opposite
> IP's
>
> hope that helps.
>
>
> --- Mhlanga Libone <libone.mhlanga@nhsia.nhs.uk>
> wrote:
> > couldn't you use "maximum-paths" ...not exactly
> sure
> > if thats the right
> > syntax ?
> >
> > -----Original Message-----
> > From: Donny MATEO
> > [mailto:donny.mateo@sg.ca-indosuez.com]
> > Sent: 22 August 2002 10:11
> > To: ccielab@groupstudy.com
> > Subject: eBGP Multihop Load Balancing
> >
> >
> > A quick one,
> >
> > if one is required to do load balancing over a
> > multihop ebgp connection
> > (rtrA and rtrB in different
> > AS)
> >
> > lo:1.1.1.1
> > lo:2.2.2.2
> > |
> > |
> > rtrA:
> .1-------------10.1.1.0/30---------------
> > .2:rtrB
> > |
> > |
> > | .5 ---------------10.1.1.4/30
> > ----------------.6|
> >
> > apart from the obvious static route from rtrA to
> > rtrB loopback, over the two
> > link with equal cost
> > like : ip route 2.2.2.2 255.255.255.255 10.1.1.2
> > ip route 2.2.2.2 255.255.255.255
> 10.1.1.6
> >
> > Anybody has any idea of what else solutions that
> > might be able to be aplied
> > to this case with the
> > lab constraint of no static route allowed in any
> > form ?
> >
> > thx.
> > Donny
> >
> >
> >
> >
> > Omer Ansari
> >
> > <omer@ansari.com> To:
> > Brian McGahan
> > <brian@cyscoexpert.com>
> >
> > Sent by: cc:
> > "'Ademola
> > Osindero'" <osindero@lagos.sns.slb.com>, "'Yadav,
> > Arvind K (CAP,
> > nobody@groupstudy
> > GECIS)'"
> > <Arvind.Yadav@gecis.ge.com>,
> > "'VANGADASALAM,SURENDRAN
> >
> > .com
> > (Non-HP-Singapore,ex4)'"
> > <surendran_vangadasalam@non.hp.com>, "'Omer
> Ansari'"
> >
> >
> > <omer@ansari.com>,
> > <ccielab@groupstudy.com>
> >
> >
> > Subject: RE: BGP Metric
> >
> > 22-08-2002 03:41
> >
> > Please respond to
> >
> > Omer Ansari
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > yes. and just to clarify my (and possibly other
> > ppls) misunderstanding,
> > step 5 in the selection process is:
> >
> > 5.Prefer the path with the lowest origin type: IGP
> > is lower than EGP,
> > and EGP is lower than INCOMPLETE.
> >
> > and not actually the AD , which is more for which
> > route gets into the
> > route table.
> >
> >
> > On Wed, 21 Aug 2002, Brian McGahan wrote:
> >
> > > A side note on MED:
> > >
> > >
> http://www.cisco.com/warp/public/459/bgp-med.html
> > >
> > > And BTW, distance does not have anything to
> do
> > with BGP best
> > > path selection. The BGP decision process is
> used
> > to determine which
> > > path is best. This does not necessarily mean
> that
> > best routes will make
> > > it to the IP routing table. Distance is part of
> > this second decision,
> > > but not the first.
> > >
> > > http://www.cisco.com/warp/public/459/25.shtml
> > >
> > >
> > > HTH
> > >
> > > Brian McGahan, CCIE #8593
> > > Director of Design and Implementation
> > > brian@cyscoexpert.com
> > >
> > > CyscoExpert Corporation
> > > Internetwork Consulting & Training
>
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