Multicast Problems - Nokia IP500 Series Installation Manual

8
Troubleshooting
The appliance does not recognize the new memory
configuration
Problem The DIMMs are not properly seated in the DIMM sockets.
Solution Repeat the memory installation procedures. Make sure the
DIMMs are fully seated in their sockets.

Multicast Problems

Troubleshooting Tip Use tcpdump to view packets. To display packets
for a specific interface, use the following command:
tcpdump -i interface proto igmp
For more information about how to use the
Traffic with tcpdump"
Under Routing Options in the Routing Configuration section in Voyager, you
can enable several types of trace options for DVMRP. These traces are logged
into
/var/tmp/ipsrd.log
Problem You do not have IP connectivity.
Solution Verify that you have IP connectivity; ping various hosts on each
network. See
Problem DVMRP is not enabled on the interfaces.
Solution Verify that DVMRP is enabled on the interfaces in use.
Problem Packets exceed TTL on clients.
Solution Verify that the client is set up for the proper TTL number. Many
clients are set to receive local traffic only one hop away.
The IPSO software includes the
on a network, much like the
124
All manuals and user guides at all-guides.com
on page 126.
.
"Connectivity Problems"
tcpdump
tcpdump
command, see
tcpdump
on page 120.
utility. Use
tcpdump
or snoop programs of a UNIX
IP500 Series Installation Guide
"Filtering
to view traffic