ā02-24-2010 12:48 PM - edited ā03-06-2019 09:53 AM
Hi,
Vlan 70 and vlan 83 exist on 6513 floor switch 1 . This floor switch is tied to core switch 2. I have attached a Diagram of the scenario.
SVI for vlan 70 and 83 sit on Core 1.
My workstation is on vlan 70 and when i do a ping to a workstaion on vlan 83 it works but when i do a trace to the same desktop on vlan 83 it stops on Core 1 and i dont see the trace going to hte workstation
Can anybody explain why this is hapenning.
Thanks
ā02-24-2010 08:18 PM
Do you have no ip unreachables enabled on any of the SVIs?
ā02-25-2010 05:35 AM
Hi Ediison,
"No IP unreachables " is not enabled on any of the SVI's
Thanks
ā02-25-2010 05:41 AM
Hi,
any personal Fw involved on the PCs?
BR,
Milan
ā02-25-2010 06:12 AM
Hi
I can ping the Workstation but trace doesn't work
i have question aren't ping and trace both the same (ICMP)
ā02-25-2010 06:19 AM
Hi,
ping is working with ICMP and trace is working with UDP packets.
can you check is there any desktop firewall in your both workstations.
regards
karuppu
ā02-25-2010 06:40 AM
Hi,
Cisco trace is using UDP but Microsoft tracert is using ICMP.
The difference between Ping and traceroute then is the traceroute works with TTL - it sends packets with TTL=1, 2, 3,...
And the routers on the path are replying with ICMP "TTL expired" responses.
The target device should respond with a different ICMP message (Host unreachable, I think) though.
BR,
Milan
ā02-25-2010 06:57 AM
Hi,
you mean if i can ping the workstation the firewall is stopping trace packets (UDP)
Is this possible?
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