From: Vince Mashburn (cciegroupstudy@gmail.com)
Date: Tue May 29 2007 - 12:54:34 ART
I think that if there are equal cost routes, then the source address can be
chosen from any of the equal cost networks. It is important to know that
the source address will not change during a ping session but the interface
that the traffic is sent out of will (if using equal cost LB). Looking at
your output, this appears to be what is happening. The routing process
chose one of the equal cost networks as the source and routed the packets in
a load balancing fashion out both equal cost itnerfaces. To test, increase
the metric of one of the networks and try again.
On 5/27/07, Ovidiu Neghina <o.neghina@gmail.com> wrote:
>
> Hi Kim
> No is not ...
> The problem is the traffic generated by the router goes through HDLC
> Serial0/1/1
> with source addres of frame relay subinterface Serial 0/1/0.1
>
> 10x,
> Ovidiu
>
> On 5/26/07, Kim <support@isolvesystems.com> wrote:
> >
> > Ovidiu,
> > Looks like the traffic is load balanced between main and
> subinterface. In
> > your show output below, the traffic is going out thru
> subinterface. Thus,
> > the source address is the subint address.
> >
> > Regards,
> > Kim
> >
> >
> >
> > On 5/25/07, Ovidiu Neghina <o.neghina@gmail.com> wrote:
> >
> > > Hi dear all,
> > > Maybe you could help.
> > >
> > > I have lab with 2 routers,R4 and R5, connected through 2 equal path
> > > links:
> > > serial link and a frame-relay point to point link.
> > > I am pinging 150.1.4.1 from R5 and now comes the question....
> > > R5 choses serial0/1/1 to send the packets but the source of the icmp
> > > packet
> > > is the address of
> > > serial 0/1/0.1 . *The source should be ip address of serial0/1/1 right
> ?
> > >
> > > *R5#show ip route 150.1.4.1 ------------------------ i have 2 equal
> > > routes
> > > to 150.1.4.1
> > > Routing entry for 150.1.4.0/24
> > > Known via "ospf 1", distance 110, metric 65, type intra area
> > > Last update from 155.1.45.4 on Serial0/1/1, 00:01:40 ago
> > > Routing Descriptor Blocks:
> > > 155.1.45.4, from 150.1.4.4, 00:01:40 ago, via *Serial0/1/1*
> > > Route metric is 65, traffic share count is 1
> > > * 155.1.0.4, from 150.1.4.4, 00:01:40 ago, via *Serial0/1/0.1
> > > * Route metric is 65, traffic share count is 1
> > >
> > > R5#sh ip int brief | i erial
> > > Serial0/1/0 unassigned YES manual up
> > > up
> > > *Serial0/1/0.1 155.1.0.5 YES manual up
> > > up
> > > Serial0/1/1 155.1.45.5 YES NVRAM up
> > > up*
> > > Serial0/1/1.1 unassigned YES unset deleted
> > > down
> > > R5#
> > >
> > > R5#ping 150.1.4.1 r 1
> > > Type escape sequence to abort.
> > > Sending 1, 100-byte ICMP Echos to 150.1.4.1, timeout is 2 seconds:
> > > !
> > > Success rate is 100 percent (1/1), round-trip min/avg/max = 28/28/28
> ms
> > > R5#
> > >
> > > IP: tableid=0,* s=155.1.0.5 (local), d=150.1.4.1 (Serial0/1/1),*
> routed
> > > via
> > > FIB
> > > IP: s=155.1.0.5 (local), d= 150.1.4.1 (Serial0/1/1), len 100, sending
> > > ICMP type=8, code=0
> > > IP: tableid=0, s=150.1.4.1 (Serial0/1/0.1), d=155.1.0.5(Serial0/1/0.1),
> > >
> > > routed via RIB
> > > IP: s=150.1.4.1 (Serial0/1/0.1), d=155.1.0.5 (Serial0/1/0.1), len 100,
> > > rcvd
> > > 3
> > > ICMP type=0, code=0
> > >
> > > I don't have local policy routing on R5 , cef is fine:
> > >
> > > R5#sh ip cef 150.1.4.1
> > > 150.1.4.0/24, version 244, epoch 0, per-destination sharing
> > > 0 packets, 0 bytes
> > > via 155.1.45.4 , Serial0/1/1, 0 dependencies
> > > traffic share 1
> > > next hop 155.1.45.4, Serial0/1/1
> > > valid adjacency
> > > via 155.1.0.4, Serial0/1/0.1, 0 dependencies
> > > traffic share 1
> > > next hop 155.1.0.4, Serial0/1/0.1
> > > valid adjacency
> > > 0 packets, 0 bytes switched through the prefix
> > > tmstats: external 0 packets, 0 bytes
> > > internal 0 packets, 0 bytes
> > >
> > > have a great day
> > > Ovidiu
> > >
> > >
> _______________________________________________________________________
> > > Subscription information may be found at:
> > > http://www.groupstudy.com/list/CCIELab.html
> > >
> >
> >
> >
> > --
> > http://www.isolvesystems.com
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
This archive was generated by hypermail 2.1.4 : Fri Jun 01 2007 - 06:55:22 ART