Extended ping using the source interface of Vlan937 as well works? Ken Matlock Network Analyst Exempla Healthcare (303) 467-4671 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Michael Robson Sent: Wednesday, March 04, 2009 2:28 PM To: [email protected] Cc: [email protected] Subject: Re: [c-nsp] UDP-helper problem
Yes there is a route to a.b.c.d and yes we can ping the DHCP server from everywhere, including the new sup. On 4 Mar 2009, at 18:54, <[email protected]> wrote: > On Wed Mar 4 8:00 , Michael Robson sent: > >> I have recently moved the routing of a subnet from an old sup2/msfc2 >> 6500 (Version 12.1(26)E8, RELEASE SOFTWARE (fc1)) to a newer sup3/ >> msfc3 6500 (Version 12.2(18)SXF13, RELEASE SOFTWARE (fc1)). On the >> old >> router the udp-helper command worked fine, but on the new router I >> can >> see the DHCP address coming in but not the reply coming back and the >> DHCP server isn't seeing the request arriving. Can anyone suggest why >> this might have stopped working (it isn't an ACL or firewall issue as >> there aren't any in the way) and I haven't turned _off_ any component >> of udp-helper (i.e. using the ip forward-protocol command). >> >> interface Vlan937 >> description XXXYYYZZZ >> ip address w.x.y.z 255.255.255.192 >> ip helper-address a.b.c.d >> > > From this new sup, do you have a route to a.b.c.d? Can you ping the > DHCP server from this new sup? > > > -chris > Michael -- Michael Robson | Tel: +44 (0) 161 275 6113 Senior Network Engineer | Fax: +44 (0) 161 275 6120 Net North West | Email: [email protected] _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
