Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Release Notes, Cisco IOS Release 12.2(25)SE1

• When connected to some third-party devices that send early preambles, a switch port

operating at 100 Mbps full duplex or 100 Mbps half duplex might bounce the line

protocol up and down. The problem is observed only when the switch is receiving

frames.

The workaround is to configure the port for 10 Mbps and half duplex or to connect a hub

or a nonaffected device to the switch. (CSCed39091)

•

A traceback error occurs if a crypto key is generated after an SSL client session.

There is no workaround. This is a cosmetic error and does not affect the functionality of

the switch. (CSCef59331)

Ethernet

Subnetwork Access Protocol (SNAP) encapsulated IP packets are dropped without an error

message being reported at the interface. The switch does not support SNAP-encapsulated IP

packets. There is no workaround. (CSCdz89142)

HSRP

When the active switch fails in a switch cluster that uses HSRP redundancy, the new active

switch might not contain a full cluster member list. The workaround is to ensure that the ports

on the standby cluster members are not in the spanning-tree blocking state. To verify that

these ports are not in the blocking state, see the “Configuring STP” chapter in the software

configuration guide. (CSCec76893)

When the rate of received DHCP requests exceeds 2,000 packets per minute for a long time,

the response time might be slow when you are using the console. The workaround is to use

rate limiting on DHCP traffic to prevent a denial of service attack from occurring.

(CSCeb59166)

IP Telephony

These are the IP telephony limitations:

When a Cisco IP Phone is connected to the switch, the port VLAN ID (PVID) and the

voice VLAN ID (VVID) both learn its MAC address. However, after dynamic MAC

addresses are deleted, only the VVID relearns the phone MAC address. MAC addresses

are manually or automatically deleted when a topology change occurs or when port

security or an 802.1x feature is enabled or disabled.

There is no workaround. (CSCea80105)

After you change the access VLAN on a port that has 802.1x enabled, the IP Phone

address is removed. Because learning is restricted on 802.1x capable ports, it takes

approximately 30 seconds before the address is relearned. No workaround is necessary.

(CSCea85312)

Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Release Notes, Cisco IOS Release 12.2(25)SE1 9