4800G is not seen in traceroute output

[trck]

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.

[JSCher]

please apply

ip ttl-expires enable
ip unreachables enable