Managing port-level configuration interactions

For features that are configured on specific switch ports in a stack, the configuration procedures are the same as for stand-alone switches, but the port designations for the ports in the stack are modified. Each port is identified by the stack member ID of its switch, followed by a slash and then the port number as it is shown on the switch. For example, for a switch with stack member ID 3, port 10 on that switch would be identified as port 3/10.

Viewing show interfaces brief output for port 3/10

switch(config)# show interfaces brief 3/10

 Status and Counters - Port Status

                         | Intrusion                           MDI  Flow Bcast
  Port         Type      | Alert     Enabled Status Mode       Mode Ctrl Limit
  ------------ --------- + --------- ------- ------ ---------- ---- ---- -----
  3/10         100/1000T | No        Yes     Down   1000FDx         off  0

Similarly, CLI commands requiring specific port (interface) numbers on a 2930M switch configured for stacking require the modified port designations. For example, to enter the port context for port 10 on stack member 2, type:


switch(config)# interface 2/10   
switch(eth-2/10)#_

In the output containing designated port numbers for a 2930M switch configured for stacking, the port numbers are likewise listed in the modified format.

Viewing show interfaces config output

switch(config)# show interfaces config

 Port Settings

  Port   Type      | Enabled Mode         Flow Ctrl MDI
  ------ --------- + ------- ------------ --------- ----
  1/1    100/1000T | Yes     Auto         Disable   Auto
  1/2    100/1000T | Yes     Auto         Disable   Auto
  1/3    100/1000T | Yes     Auto         Disable   Auto
   .
   .
   .
  2/1    100/1000T | Yes     Auto         Disable   Auto
  2/2    100/1000T | Yes     Auto         Disable   Auto
  2/3    100/1000T | Yes     Auto         Disable   Auto
  2/4    100/1000T | Yes     Auto         Disable   Auto
.
.
.

Attempting to enter a CLI command for a port on a stack member without using the modified port number format generates a “Module not present...” message such as the following:


switch(config)# interface 10 
Module not present for port or invalid port: 10