[Xorp-users] ARP problems with static routes in XORP

Allan Leinwand allan at vyatta.com
Wed Jun 7 11:31:01 PDT 2006


Hi Vikram,

   It's best to go with advice from Mike Horn over mine everyday.  He's a great technical resource that has been contributing to our project...  I'll go back to ssuming my role in management now and try to forget that I was once technical :) :)

Take care,

Allan
Vyatta, Inc.

----- Original Message -----
From: Vikram KAUL <vkaul at research.telcordia.com>
To: Mike Horn <mhorn at vyatta.com>
Cc: Allan Leinwand <allan at vyatta.com>, xorp-users at xorp.org
Sent: Wednesday, June 7, 2006 10:47:05 AM GMT-0800
Subject: RE: [Xorp-users] ARP problems with static routes in XORP


mhorn>To help you troubleshoot, can you provide a few pieces of information:
mhorn>1. What OS are the hosts and Routers?
mhorn>2. Can you send the interface configuration from all the devices (ifconfig
mhorn>or equivalent).
mhorn>3. Can you send the routing table output from all the devices.  You can use
mhorn>"netstat -rn" from the unix shell or you can use XORP command "show route
mhorn>table ipv4 unicast final".

I will be able to do this tomorrow. I am in another location now.

mhorn>
mhorn>Proxy ARP won't work in your setup, the HostA should only be ARP'ing for the
mhorn>nexthop address on the local connected subnet, in this case 17.17.17.1.  The
mhorn>traffic bound for 10.1.1.2 should be sent to 17.17.17.1 who should then
mhorn>forward it to 10.1.1.2.
mhorn>

That is what I thought should happen. The fact that 10.1.1.2 is 
corresponding to the default entry of the route table at the host for 
which the gatway is 17.17.17.1 should make the host send a ping directly 
to the gatway. The gateway router would then forward the ping to the next 
hop router. 

I will send the XORP configurations tomorrow. In the meanwhile, if anyone 
has any other recommendations, please do advise.

regards..
Vikram



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