Примечания к выпуску для Cisco Cisco Gigabit Ethernet Switch Module (CGESM) for HP
8
Cisco Gigabit Ethernet Switch Module for HP BladeSystem p-Class Release Notes, Cisco IOS Release 12.2(35)SE and later
459515-002
Limitations and Restrictions
•
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.
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)
nonaffected device to the switch. (CSCed39091)
•
When port security is enabled on an interface in restricted mode and the switchport block unicast
interface command has been entered on that interface, MAC addresses are incorrectly forwarded
when they should be blocked
interface command has been entered on that interface, MAC addresses are incorrectly forwarded
when they should be blocked
The workaround is to enter the no switchport block unicast interface configuration command on
that specific interface. (CSCee93822)
that specific interface. (CSCee93822)
•
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)
(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)
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)
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)
IP
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)
traffic to prevent a denial of service attack from occurring. (CSCeb59166)
IP Telephony
These are the IP telephony limitations:
•
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)
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)