I have a 2911 with an internal switch module(ES3G-16-P). When I install the switch module, the router is creating two seperate interfaces. I have worked with the these switch modules before on the 3845, but I've seen where two interfaces are created. Why are there two? Am I suppose to set up a port channel or can I use just one interface?
Dublin-Border-R1#sh ip int b
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
GigabitEthernet0/2 unassigned YES NVRAM administratively down down
GigabitEthernet1/0 10.1.1.1 YES manual up up
GigabitEthernet1/1 unassigned YES unset up up
Vlan1 unassigned YES unset up up
Dublin-Border-R1# sh cdp n
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay
Device ID Local Intrfce Holdtme Capability Platform Port ID
Dublin-Border-Sw1
Gig 1/0 171 S I SM-ES3G-1 Gig 0/18
Dublin-Border-Sw1
Gig 1/1 171 S I SM-ES3G-1 Gig 0/17
Dublin-Border-R1#
