Cisco WS-C2960-24LC-S Software Configuration Manual page 685

Appendix C Recommendations for Upgrading a Catalyst 2950 Switch to a Catalyst 2960 Switch
Table C-1 Catalyst 2950 and 2960 Switch Configuration Incompatibilities (continued)
Feature Catalyst 2950 Switch Command and Explanation
IEEE 802.1x In Cisco IOS 12.1EA, the Catalyst 2950 switch ranges
for the IEEE 802.1x server-timeout, supp-timeout, and
tx-period are 1 to 65535. You use these interface
configuration commands to configure them:
dot1x timeout server-timeout seconds
dot1x timeout supp-timeout seconds
dot1x timeout tx-period seconds
1
IGMP snooping The Catalyst 2950 switch implements IGMP snooping
based on MAC addresses. You use this global
configuration command to configure static groups:
ip igmp snooping vlan vlan-id static mac-address
interface interface-id
These Catalyst 2950 switch global configuration
commands were implemented to address hardware
limitations:
ip igmp snooping source-only-learning [age-timer
value]
no ip igmp snooping mrouter learn pim v2
Interface MAC On the Catalyst 2950 switch, you can set the MAC
address address for both physical and switch virtual interfaces
(SVIs) by using this interface configuration command:
mac-address mac-address
OL-8603-04
Configuration Compatibility Issues
Result on the Catalyst 2960 Switch
In Cisco IOS 12.2SE, the IEEE 802.1x
server-timeout and supp-timeout ranges are 30
to 65535. The tx-period range is 15 to 65535.
For server-timeout, the Catalyst 2960 switch
accepts 1 to 29 as a valid lower value and
changes the value to 30.
For supp-timeout, the Catalyst 2960 switch
accepts 1 to 29 as a valid lower value and
changes the value to 30.
For tx-timeout, the Catalyst 2960 switch
accepts 1 to 14 as a valid lower value and
changes the value to 15.
For all three commands, this message appears:
%Invalid input detected at '^' marker.
The Catalyst 2960 switch implements IGMP
snooping based on IP addresses and uses other
advanced hardware. It rejects the Catalyst 2950
IGMP snooping commands, and these messages
appear:
Switch(config)# ip igmp snooping vlan 1
static 0002.4b28.c482 interface
gigabitethernet0/1
^
%Invalid input detected at '^' marker.
Switch(config)# ip igmp snooping
source-only-learning
^
%Invalid input detected at '^' marker.
Switch(config)# no ip igmp snooping
mrouter learn pim v2
^
%Invalid input detected at '^' marker.
On the Catalyst 2960 switch, you cannot set the
MAC address for physical and SVIs.
The switch rejects the command, and this
message appears:
Switch(config-if)# mac-address
0100.0ccc.cccc
^
%Invalid input detected at '^' marker.
Catalyst 2960 Switch Software Configuration Guide
C-3