Show loopback interface information.
show interfaces loopback
show interfaces loopback vrf WORD <1-16> name
show interfaces loopback vrfids WORD <0-512>
None
Privileged EXEC
Switch:1#show interfaces loopback
==========================================================================================
                                Circuitless IP Interface - GlobalRouter
==========================================================================================
INTF IP_ADDRESS      NET_MASK        OSPF    PIM     AREA_ID         IF   IP
ID                                   STATUS  STATUS                  INDX NAME
------------------------------------------------------------------------------------------
1    1.2.3.4         255.255.0.0     disable disable 0.0.0.0         1344
2    2.3.4.5         255.255.255.0   disable disable 0.0.0.0         1345
15   192.0.2.2       255.255.255.0   disable disable 0.0.0.0         1358 EXTRSERVER101
========================================================================================================
                                                Loopback Ipv6 Interface
========================================================================================================
IF   VRF              Descr         VLAN PHYSICAL          ADMIN   OPER  TYPE  MTU  HOP REACHABLE   RETRANSMIT  IPSEC
INDX NAME                                ADDRESS           STATE   STATE            LMT TIME        TIME        STATE
--------------------------------------------------------------------------------------------------------
1234 GREEN            CLIPv6-11         00:00:00:00:00:0b  enable  up    ETHER 1500 64  30000       1000       disable
========================================================================================================
                                                 Loopback IPv6 Address
========================================================================================================
IPV6 ADDRESS/PREFIX LENGTH                   LOOPBACK-ID  TYPE    ORIGIN    STATUS                    NAME
---------------------------------------------------------------------------------------------------------
2001:DB8:2000::1/128			    C-11	UNICAST  MANUAL	   PREFERRED INF     INF      EXTRSER200
1 out of 1 Total Num of Interface Entries displayed.
1 out of 1 Total Num of Address Entries displayed.