Nokia IP350 Installation Guide - Page 92

Problems with Multicast

Page 92 highlights

8 Troubleshooting 3. Click Display or Remove Dynamic ARP Entries. 4. Click Delete for the entry you want to delete. 5. Click Apply. Problems with Multicast 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 tcpdump command, see the Voyager Reference Guide. Under Routing Options in the Routing Configuration section in Voyager, you can also enable several types of trace options for DVMRP. These traces are logged into /var/tmp/ipsrd.log. For information about how to access Voyager and the related reference materials, see "Accessing Nokia Network Voyager" on page 34. Problem No IP connectivity. Solution Verify that you have IP connectivity; ping various hosts on each network. Problem DVMRP is not enabled on the interfaces. Solution Verify that DVMRP is enabled on the interfaces in use. Problem Exceeding 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. 92 Nokia 60s and 100s Installation Guide

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8
Troubleshooting
92
Nokia 60s and 100s Installation Guide
3.
Click Display or Remove Dynamic ARP Entries.
4.
Click Delete for the entry you want to delete.
5.
Click Apply.
Problems with Multicast
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 tcpdump command, see the
Voyager
Reference Guide
.
Under Routing Options in the Routing Configuration section in Voyager, you
can also enable several types of trace options for DVMRP. These traces are
logged into
/var/tmp/ipsrd.log
.
For information about how to access Voyager and the related reference
materials, see
“Accessing Nokia Network Voyager”
on page 34
.
Problem
No IP connectivity.
Solution
Verify that you have IP connectivity; ping various hosts on each
network.
Problem
DVMRP is not enabled on the interfaces.
Solution
Verify that DVMRP is enabled on the interfaces in use.
Problem
Exceeding 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.