Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Release Notes, Cisco IOS Release 12.2(25)SEE1 and later

459516-002

Open Caveats

• CSCsd85770

When you apply the mls qos trust dscp global configuration command to a port, this error message

might appear.

Master sets trust failed, sets to untrust modetrust type update

failed on ifc GigabitEthernetx/x

Switch(config-if)#Tcam write failed trust dscp

%QOSMGR-4-COMMAND_FAILURE: Execution of slave:HQM_IDBTRUST_CMD

command failed on GigabitEthernetx/x

The workaround is to apply the sdm prefer qos global configuration command before you enter the

mls qos trust dscp global configuration command.

• CSCsd86177

When you remove and reconfigure a loopback interface, it does not appear in the ifTable.

The workaround is to reload the switch.

• CSCse03859

If the switch is in VTP server mode and VLANs with IDs greater than 255 (256 and above) are

created, DHCP snooping does not work properly on these VLANs.

The workaround is to put the switch in VTP transparent mode before creating the VLANs.

• CSCse14774

If a switch is connected to a third-party router through an EtherChannel and the EtherChannel is

running in Link Aggregation Control Protocol (LACP) mode, the interfaces in the EtherChannel

might go down after you enter the switchport trunk native vlan vlan-id interface configuration

command to change the native VLAN from VLAN 1 (the default) to a different VLAN ID.

These are the workarounds. You only need to do one of these:

–

Do not change the native VLAN ID from the default setting of VLAN 1.

–

If you need to change the native VLAN ID to a VLAN other than VLAN 1, do not run the

EtherChannel in LACP mode, and change the mode to On by using the channel-group

channel-group-number mode on interface configuration command.

• CSCsc26726

Sometimes interfaces Gi0/23 & Gi0/24 will not link up with another switch when the interface speed

is set to an explicit value instead of autonegotiated. This does not happen when a copper SFP is used

with interfaces Gi0/17 - Gi0/20.

The workaround is to autonegotiate the speed with the other device, or to use a different cable type.

Use a straight through cable for switch to switch connection, or a cross-over cable for switch to any

non switch device connection. If the other device is capable of auto MDIX even with speed not set

to auto, then use that. When an improper cable is used only one side of the connection needs to use

auto MDIX to achieve a link.