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07-24-2013 11:06 AM
07-24-2013 11:06 AM
4800G is not seen in traceroute output
Hi everyone!
Using Layer 2/3/4 switch HP/3Com 4800G-24-SFP
Software Version 5.20 Release 2220P07 (latest available at hp site)
configured VLANs
Configured VLAN-Interfaces
configured OSPF instance
configured several OSPF areas
configured MSTP
everything works as it should, but device is appeared as * * * in traceroute output.
and is not responding when it is destination of traceroute (if default in linux UDP used).
Found that it responds when tracerouted by ICMP type or TCP type packets.
its 192.168.0.1 and 192.168.21.1
Here is it as destination
inetboard:~ # traceroute -n -T 192.168.0.1
traceroute to 192.168.0.1 (192.168.0.1), 30 hops max, 40 byte packets using TCP
1 192.168.0.1 (192.168.0.1) 3.328 ms 2.762 ms 8.017 ms
inetboard:~ # traceroute -n -T 192.168.21.1
traceroute to 192.168.21.1 (192.168.21.1), 30 hops max, 40 byte packets using TCP
1 192.168.21.1 (192.168.21.1) 15.431 ms 14.890 ms 14.305 ms
inetboard:~ # traceroute -n 192.168.0.1
traceroute to 192.168.0.1 (192.168.0.1), 30 hops max, 40 byte packets using UDP
1 * * *
2 * *
And here is it as hop:
inetboard:~ # traceroute -n 192.168.0.33
traceroute to 192.168.0.33 (192.168.0.33), 30 hops max, 40 byte packets using UDP
1 * * *
2 192.168.0.33 (192.168.0.33) 16.002 ms 15.404 ms 14.101 ms
inetboard:~ #
dim:~ # traceroute -n 192.168.21.37
traceroute to 192.168.21.37 (192.168.21.37), 30 hops max, 40 byte packets using UDP
1 192.168.197.1 (192.168.197.1) 0.191 ms 0.158 ms 0.148 ms
2 10.1.197.3 (10.1.197.3) 44.703 ms 44.323 ms 44.337 ms
3 10.1.200.2 (10.1.200.2) 226.941 ms 226.833 ms 227.046 ms
4 10.1.100.1 (10.1.100.1) 230.505 ms 229.517 ms 232.013 ms
5 * * *
6 192.168.21.37 (192.168.21.37) 231.834 ms 230.868 ms 230.645 ms
dim:~ #
it routes and forwards UDP but doesnt appear.
Thanks to all.
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11-12-2013 11:06 PM
11-12-2013 11:06 PM
Re: 4800G is not seen in traceroute output
ip ttl-expires enable
ip unreachables enable