Release Notes for Cisco Catalyst Blade Switch 3120 for HP, Cisco IOS Release 12.2(55)SE and Later

ManualsBrandsHP ManualsComputer AccessoriesCisco Catalyst 1/10GbE 3120X Blade Switch

OL-22860-04

Limitations and Restrictions

• The switch might display tracebacks similar to this example when an EtherChannel interface

port-channel type changes from Layer 2 to Layer 3 or the reverse:

15:50:11: %COMMON_FIB-4-FIBNULLHWIDB: Missing hwidb for fibhwidb Port-channel1

(ifindex 1632) -Traceback= A585C B881B8 B891CC 2F4F70 5550E8 564EAC 851338 84AF0C

4CEB50 859DF4 A7BF28 A98260 882658 879A58

There is no workaround. (CSCsh12472)

HSRP

• When the switch stack is in the HSRP active state and a master changeover occurs, you cannot ping

the stack by using an HSRP virtual IP address.

There is no workaround. (CSCth00938)

IEEE 802.1x Authentication

• If a supplicant using a Marvel Yukon network interface card (NIC) is connected to an

IEEE 802.1x-authorized port in multihost mode, the extra MAC address of 0c00.0000.0000 appears

in the MAC address table.

Use one of these workarounds (CSCsd90495):

–

Configure the port for single-host mode to prevent the extra MAC address from appearing in the

MAC address table.

–

Replace the NIC with a new card.

• When MAC authentication bypass is configured to use Extensible Authentication Protocol (EAP)

for authorization and critical authentication is configured to assign a critical port to an access

VLAN:

–

If the connected device is supposed to be unauthorized, the connected device might be

authorized on the VLAN that is assigned to the critical port instead of to a guest VLAN.

–

If the device is supposed to be authorized, it is authorized on the VLAN that is assigned to the

critical port.

Use one of these workarounds (CSCse04534):

–

Configure MAC authentication bypass to not use EAP.

–

Define your network access profiles to not use MAC authentication bypass. For more

information, see the Cisco Access Control Server (ACS) documentation.

• When IEEE 802.1x authentication with VLAN assignment is enabled, a CPUHOG message might

appear if the switch is authenticating supplicants in a switch stack.

The workaround is not use the VLAN assignment option. (CSCse22791)

Multicasting

• Multicast packets with a time-to-live (TTL) value of 0 or 1 are flooded in the incoming VLAN when

all of these conditions are met:

–

Multicast routing is enabled in the VLAN.

–

The source IP address of the packet belongs to the directly connected network.

–

The TTL value is either 0 or 1.