Release Notes for Cisco Catalyst Blade Switch 3120 for HP, Cisco IOS Release 12.2(52)SE

OL-19714-01

Limitations and Restrictions

• When a MAC access list is used to block packets from a specific source MAC address, that MAC

address is entered in the switch MAC-address table.

The workaround is to block traffic from the specific MAC address by using the mac address-table

static mac-addr vlan vlan-id drop global configuration command. (CSCse73823)

Address Resolution Protocol

• The switch might place a port in an error-disabled state due to an Address Resolution Protocol

(ARP) rate limit exception even when the ARP traffic on the port is not exceeding the configured

limit. This could happen when the burst interval setting is 1 second, the default.

The workaround is to set the burst interval to more than 1 second. We recommend setting the burst

interval to 3 seconds even if you are not experiencing this problem. (CSCse06827))

Cisco X2 Transceiver Modules and SFP Modules

• Cisco X2-10GB-LR transceiver modules with a version identification number lower than V03 might

show intermittent frame check sequence (FCS) errors or be ejected from the switch during periods

of operational shock greater than 50 g. There is no workaround. (CSCse14048)

• Cisco X2-10GB-CX4 transceiver modules with a version identification number lower than V03

might be difficult to insert because of a dimensional tolerance discrepancy. The workaround is to

use modules with a version identification number of V03 or later. (CSCsg28558)

• Switches with the Cisco X2-10GB-LX4 transceiver modules with a version identification number

before V03 might intermittently fail. The workaround is to use Cisco X2-10GB-LX4 transceiver

modules with a version identification number of V03 or later. (CSCsh60076)

• Cisco GLC-GE-100FX SFP modules with a serial number between OPC0926xxxx and

OPC0945xxxx might show intermittent module not valid, data, status, link-flapping, and FCS errors.

The workaround is to use modules with serial numbers that are not in the specified range.

(CSCsh59585)

• When switches are installed closely together and the uplink ports of adjacent switches are in use,

you might have problems accessing the SFP module bale-clasp latch to remove the SFP module or

the SFP cable (Ethernet or fiber). Use one of these workarounds:

–

Allow space between the switches when installing them.

–

In a switch stack, plan the SFP module and cable installation so that uplinks in adjacent stack

members are not all in use.

–

Use a long, small screwdriver to access the latch, and then remove the SFP module and cable.

(CSCsd57938)

• When a Cisco X2-10GB-CX4 transceiver module is in the X2 transceiver module port and you enter

the show controllers ethernet-controller tengigabitethernet privileged EXEC command, the

command displays some fields as unspecified. This is the expected behavior based on IEEE 802.3ae.

(CSCsd47344)

• The far-end fault optional facility is not supported on the GLC-GE-100FX SFP module. The

workaround is to configure aggressive UDLD. (CSCsh70244).