HP 4000M User Manual download pdf (Page 259)

8-7

Troubleshooting

Unusual Network Activity

Troubleshooting

IGMP-Related Problems

IP Multicast (IGMP) Traffic Does Not Reach IGMP Hosts or a Multicast

Router Connected to a Port. IGMP must be enabled on the switch and the

affected port must be configured for “Auto” or “Forward” operation.

IP Multicast Traffic Floods Out All Ports; IGMP Does Not Appear To

Filter Traffic. The IGMP feature does not operate if the switch or VLAN does

not have an IP address configured manually or obtained through DHCP/Bootp.

To ve rify whe ther an IP ad dre ss is conf igured for the switch or VLAN , do e ith er

of the following:

■ Try Using the Web Browser Interface: If you can access the web

browser interface, then an IP address is configured.

■ Try To Telnet to the Switch Console: If you can Telnet to the switch,

then an IP address is configured.

■ Using the Switch Console Interface: From the Main Menu, check the

Management Address Information screen by clicking on

1. Status and Counters

2. Switch Management Address Information

Switch Mesh Problems

In a Network Using Meshed Switches, Traffic for a Specific VLAN Does

Not Reach Its Destination. The failing VLAN may not be configured on all

meshed switches. A VLAN on the network must be configured on all meshed

switches, even if a given switch has no ports assigned to that VLAN. Refer to

“VLANs and Switch Meshing” on page 6-67.

A Meshed Port Remains Disabled. The cable connecting the port to

another meshed port may be defective, or a topology error may exist. For

example, the following topology conditions are not allowed:

■ Using a hub to connect multiple meshed ports

1 2 ... 254 255 256 257 258 259 260 261 262 263 264 ... 303 304

No comments

HP 4000M User Manual Page 259