Cisco Cisco IOS Software Release 12.2(35)SE

You should review this section before you begin working with the switch. These are known limitations 
that will not be fixed, and there is not always a workaround. Some features might not work as 
documented, and some features could be affected by recent changes to the switch hardware or software.

These limitations apply to the Cisco ME switches:

These are the configuration limitations:

A static IP address might be removed when the previously acquired DHCP IP address lease expires. 

This problem occurs under these conditions:

When the switch is booted without a configuration (no config.text file in flash memory).

When the switch is connected to a DHCP server that is configured to give an address to it (the 
dynamic IP address is assigned to VLAN 1).

When an IP address is configured on VLAN 1 before the dynamic address lease assigned to 
VLAN 1 expires.

The workaround is to reconfigure the static IP address. (CSCea71176 and CSCdz11708)

IS-IS protocol (metro IP access only)

12.2(25)SEG

NNIs on all ports (metro IP access image only)

12.2(25)SEG

DHCP server

12.2(25)SEG

DHCP Option-82 configurable remote ID and circuit ID

12.2(25)SEG

Multiple spanning-tree (MST) based on the IEEE 802.1s standard

12.2(25)SEG

Nonstop forwarding (NSF) awareness (metro IP access image only)

12.2(25)SEG

Secure Copy Protocol

12.2(25)SEG

Flex Links sub 100 ms convergence; preemptive switchover (metro IP access and metro access images) 12.2(25)SEG

Link-state tracking (trunk failover) (metro IP access and metro access images only)

12.2(25)SEG