From: Tom Qian (toqian@cisco.com)
Date: Thu Apr 24 2003 - 22:49:11 GMT-3
>Date: Thu, 24 Apr 2003 21:48:39 -0400
>To: discuss-it@lists.netmasterclass.net
>From: Tom Qian <toqian@cisco.com>
>Subject: Cannot ping through when the upstream Router load-balance
>
>I have a situation like this;
>
>R6(150.100.0.6) is the hub router and R5(150.100.0.5) and R4(150.100.0.4)
>are spoke routers and they are all ospf point-to-multipoint type.
>R5 and R4 also have eigrp routing process on their ethernet
>link(150.100.10.0/24).
>R1 share the same eth segment with R5 and R4(150.100.10.0/24).
>R1 also have the same subnet with R2(160.200.1.0/24). Both R1 and R2 are
>in the Eigrp. Thus, R1 will build the EIGRP adjancies with R5, R4 and R2.
>When show ip route is issued on R1, for the destination 150.100.0.0/23,
>there are two equal cost routes via R5 and R4.
>When R1 try to ping 150.100.0.4, it will see ".!.!.!" 50% successful; so
>does it ping 150.100.0.5.
>But When R2 try to ping 150.100.0.4 or 150.100.0.5, it will not ping
>through. If R2 pings 150.100.0.6, the ping goes through. Loop?
>
>If I turn on debug ip packet on R1 at the same time R2 pings R4, I see no
>packets. From R2, I only see it sending...
>
>Can anybody explain to me?
>
>thanks,
>
>
>Tom
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