HP 5300 Información técnica descargar pdf (Pagina 373)

Troubleshooting

Unusual Network Activity

The Same CDP Switch or Router Appears on More Than One Port in

the CDP Neighbors Table. Where CDP is running, a switch or router that is

the STP root transmits outbound CDP packets over all links, including redun-

dant links that STP may be blocking in non-root devices. In this case, the non-

root device shows an entry in its CDP Neighbors table for every port on which

it receives a CDP packet from the root device. See

“Effect of Spanning Tree

(STP) On CDP Packet Transmission” on page 14-35.

IGMP-Related Problems

IP Multicast (IGMP) Traffic That Is Directed By IGMP 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 verify whether an IP address is configured for the switch or VLAN, do either

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

LACP-Related Problems

Unable to enable LACP on a port with the interface < port-number > lacp

command. In this case, the switch displays the following message:

Operation is not allowed for a trunked port.

You cannot enable LACP on a port while it is configured as static Trunk or FEC

trunked port. To enable LACP on static-trunked port, first use the

no trunk < port-number > command to disable the static trunk assignment, then

execute interface < port-number > lacp.

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HP 5300 Información técnica Pagina 373