From: Arvind Yadav (arvindyadav@comcast.net)
Date: Fri Jan 23 2004 - 03:50:19 GMT-3
Past the "sh ip ro" output of R2
----- Original Message -----
From: "David Deng" <glend_99@yahoo.com>
To: "Arvind Yadav" <arvindyadav@comcast.net>; "Edwards, Andrew M"
<andrew.m.edwards@boeing.com>; <ccielab@groupstudy.com>
Sent: Friday, January 23, 2004 1:45 AM
Subject: Re: prevent loop on ospf link
> Arvind,
>
> Thanks for the suggestion, I have tried to change the
> cost on either r6 or r5 interface ospf cost and also
> using the distance command to tweak the r5 AD on SWa,
> clear ip os pro and still get the same result, looks
> like the metric stick on 66 for both, I am desparate
> to try anything and would apprecitae any help and
> suggestions
>
> Thanks
> David
>
> --- Arvind Yadav <arvindyadav@comcast.net> wrote:
> > May be problem in return path to 136.10.56.5. R2
> > must be getting two equal
> > path for 136.10.56..x subnet and doing loadbalancing
> > among both the link.
> > Try to make R5 prefer path by changing the cost and
> > then see.
> >
> > Arvind
> >
> >
> > ----- Original Message -----
> > From: "David Deng" <glend_99@yahoo.com>
> > To: "Edwards, Andrew M"
> > <andrew.m.edwards@boeing.com>;
> > <ccielab@groupstudy.com>
> > Sent: Friday, January 23, 2004 1:05 AM
> > Subject: RE: prevent loop on ospf link
> >
> >
> > > I am able to ping the 191.10.1.1 from r2 and r5
> > > without missing any ping, I guess my FR cloud is
> > ok,
> > > but what type of problem that I might run into ?
> > >
> > > Thanks,
> > > ED
> > > --- "Edwards, Andrew M"
> > <andrew.m.edwards@boeing.com>
> > > wrote:
> > > > David,
> > > >
> > > > As far as I can see from what you have provided
> > here
> > > > there is not a
> > > > loop. It looks like you have equal cost paths
> > in
> > > > OSPF from r5/r6 to the
> > > > next hop in BGP to network 191.10.1.1. The
> > trace
> > > > you are seeing is
> > > > correct for load-balancing in OSPF. I think
> > that
> > > > the timeouts are
> > > > related to something else on the simulation
> > network.
> > > >
> > > >
> > > > Are you having any other issues in the 'frame
> > > > cloud'?
> > > >
> > > > Andy
> > > >
> > > > -----Original Message-----
> > > > From: David Deng [mailto:glend_99@yahoo.com]
> > > > Sent: Wednesday, January 21, 2004 10:51 PM
> > > > To: ccielab@groupstudy.com
> > > > Subject: prevent loop on ospf link
> > > >
> > > >
> > > > Hi Group,
> > > >
> > > > Have diffuculty on preventing the loop.
> > > > Please help, let me know if any information is
> > > > missing.
> > > >
> > > >
> > > > 136.10.56..x
> > > > SWa---r5 -----|
> > > > |
> > |------r2------r1---191.10.1.1
> > > > SWb---r6 -----|
> > > >
> > > >
> > > > --------------------------------------
> > > > swa and swb have trunk link in betwwen
> > > > r5 directly connect to SWa vlan 56 in area 3
> > > > r6 directly connect to SWb vlan 56 in area 3
> > > > link between r2 to r5/r6 is FR multipoint in
> > Area 0
> > > > ---------------------------------------------
> > > >
> > > > on Swa :
> > > >
> > > > ping 191.10.1.1 will have missed some of the
> > ping .
> > > > 3550-A#trace
> > > > 191.10.1.1
> > > >
> > > > Type escape sequence to abort.
> > > > Tracing the route to 191.10.1.1
> > > >
> > > > 1 136.10.56.5 4 msec
> > > > 136.10.56.6 0 msec
> > > > 136.10.56.5 0 msec
> > > > 2 *
> > > > 136.10.100.2 104 msec *
> > > > 3 136.10.12.1 108 msec * 104 msec
> > > >
> > > >
> > > > SW-A#sh ip route 191.10.1.1
> > > > Routing entry for 191.10.1.0/24
> > > > Known via "bgp 65251", distance 200, metric 0
> > > > Tag 100, type internal
> > > > Last update from 136.10.2.2 00:30:29 ago
> > > > Routing Descriptor Blocks:
> > > > * 136.10.2.2, from 136.10.2.2, 00:30:29 ago
> > > > Route metric is 0, traffic share count is
> > 1
> > > > AS Hops 1
> > > >
> > > > SW-A#sh ip route 136.10.2.2
> > > > Routing entry for 136.10.2.2/32
> > > > Known via "ospf 100", distance 110, metric 66,
> > > > type
> > > > inter area
> > > > Last update from 136.10.56.6 on Vlan56,
> > 00:20:56
> > > > ago
> > > > Routing Descriptor Blocks:
> > > > 136.10.56.5, from 136.10.5.5, 00:20:56 ago,
> > via
> > > > Vlan56
> > > > Route metric is 66, traffic share count is
> > 1
> > > > * 136.10.56.6, from 136.10.6.6, 00:20:56 ago,
> > via
> > > > Vlan56
> > > > Route metric is 66, traffic share count is
> > 1
> > > >
> > > > SW-A#
> > > >
> > > >
> > > > Thanks,
> > > > David
> > > >
> > > >
> > > > __________________________________
> > > > Do you Yahoo!?
> > > > Yahoo! SiteBuilder - Free web site building
> > tool.
> > > > Try it!
> > > > http://webhosting.yahoo.com/ps/sb/
> > > >
> > > >
> > >
> >
> _______________________________________________________________________
> > > > Please help support GroupStudy by purchasing
> > your
> > > > study materials from:
> > > > http://shop.groupstudy.com
> > > >
> > > > Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > > >
> > > >
> > >
> >
> _______________________________________________________________________
> > > > Please help support GroupStudy by purchasing
> > your
> > > > study materials from:
> > > > http://shop.groupstudy.com
> > > >
> > > > Subscription information may be found at:
> > > > http://www.groupstudy.com/list/CCIELab.html
> > >
> > >
> > > __________________________________
> > > Do you Yahoo!?
> > > Yahoo! SiteBuilder - Free web site building tool.
> > Try it!
> > > http://webhosting.yahoo.com/ps/sb/
> > >
> > >
> >
> _______________________________________________________________________
> > > Please help support GroupStudy by purchasing your
> > study materials from:
> > > http://shop.groupstudy.com
> > >
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> >
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! SiteBuilder - Free web site building tool. Try it!
> http://webhosting.yahoo.com/ps/sb/
>
> _______________________________________________________________________
> Please help support GroupStudy by purchasing your study materials from:
> http://shop.groupstudy.com
>
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Mon Feb 02 2004 - 09:07:49 GMT-3