Configure WS-C4948 to use SFP?

[SchinkelA]

I have a WS-C4948 and want to have it use two of its SFP slots instead of the GigabitEthernet port 47& 48.
I have put in two  glc-lh-sm in SFP slots 45 & 47 and have them connected to a C3560G-24TS which also have two glc-lh-sm installed.

I cannot figure out how to select which ports the WS-C4948 uses.  I have read that it can only use 48 of its 52 ports, so I presume there is some way to select which ports are used.  I cannot find the information from the C4500 guide, or anything more specific to the WS-C4948.

The only commands I have found with regards to SFP devices is"show hw-module subslot"

from:
http://www.cisco.com/en/US/products/hw/modules/ps4999/products_tech_note09186a00807a30d6.shtml

But in 'enable' mode, there is no such command.

Any help is really appreciated.

Thank you.

[Version 12.2(25)EWA2;
module:   1    48  1000BaseX (SFP) Supervisor             WS-C4948   ]     

[Tom Randstrom]

The only thing I could find was the following reference in the 4900 Installation Guide:

SFP Modules and Alternative Wiring

"The Cisco 4948 switch has four ports that can be configured with any combination of SFP modules with LC connectors, as shown in Figure 4-1. The interface configuration mode command media-type sfp|rj45 can be used to configure the media type for these ports in the switch software and determines whether the SFP or the RJ-45 connector is used. The default is SFP."

I am not sure if this command will do what you are looking for....

[Marvin Rhoads]

As Tom stated, when you plug in an SFP it will by default be the enabled port for Gi1/45-48 as applicable. If you want to use the built in RJ-45 port instead, use the command "media type rj-45" under the interface.

Here is a working example and the result is shown in the picture attached (snipped from CiscoWorks' CiscoView):

interface GigabitEthernet1/45

description sw-hqmsr-a10-1 3:4

switchport trunk encapsulation dot1q

switchport mode trunk

switchport nonegotiate

speed nonegotiate

!

interface GigabitEthernet1/46

switchport trunk encapsulation dot1q

switchport trunk allowed vlan 3509

switchport mode trunk

switchport nonegotiate

!

interface GigabitEthernet1/47

switchport trunk encapsulation dot1q

switchport mode trunk

media-type rj45

!

interface GigabitEthernet1/48

switchport trunk encapsulation dot1q

switchport mode trunk

media-type rj45

Hope this helps.