Release Notes for Cisco Catalyst Blade Switch 3120 for HP, Cisco IOS Release 12.2(46)SE

OL-16968-01

Limitations and Restrictions

• Cisco X2 Transceiver Modules and SFP Modules, page 10

• Configuration, page 11

• EtherChannel, page 12

• IEEE 802.1x Authentication, page 12

• Multicasting, page 13

• QoS, page 14

• Routing, page 14

• SPAN and RSPAN, page 15

• Stacking, page 15

Access Control List

These are the access control list (ACL) limitations:

• The Cisco Catalyst 3120 for HP Blade Switch has 964 TCAM entries available for ACLs in the

default and routing SDM templates instead of the 1024 entries that are available on the

Catalyst 3560 and Catalyst 3750 switches.

There is no workaround. (CSCse33114)

• 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

This is an Address Resolution Protocol limitation:

• 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

These are the Cisco X2 transceiver module and SFP module limitations:

• 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)