nanog mailing list archives

Re: Trace and Ping with Record Option on Cisco Routers


From: Chris Griffin <cgriffin () ufl edu>
Date: Mon, 22 Dec 2003 18:07:30 -0500


I believe source routing must be permitted in order for the record route
to function.  Otherwise the packet is dropped.

Chris

On Mon, 2003-12-22 at 16:45, Danny.Andaluz () triaton-na com wrote:
Hey, Group.  
 
In my production network, I'm trying to do some extended traces and
pings with the record option turned on to see what route my
packets take going and returning.  It's not working.  If I do
the extended traceroute or ping without the record option, it works
fine.  There is a firewall (PIX) a few hops in front of the
destination I'm trying to record the route for.  What part of ICMP is
this that needs to be opened on the firewall to allow this to come
back?  First time I'm coming across this.
 
Thanks,
Danny
 
 


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