• The maximum number of CEM interface supported is 192.

• DS0 loopback is not supported on the T1 interface.

• Alarm forwarding is not supported on the T1 interface.

• Card protection is not supported on the T1 interface.

The following section describes how to configure a CEM group for CESoPSN.

enable
configure terminal
controller t1 0/1/32
cem-group 0  timeslots 1-10     

enable
configure terminal
interface cem 0/1/32
cem 0
xconnect 2.2.2.2 10 encapsulation mpls

Perform a similar configuration on the other end of the pseudowire.

show running-config | sec 0/1/16
controller t1 0/1/16
 framing esf
 linecode b8zs
 cablelength short 110
  cem-group 0 timeslots 1-10
interface CEM0/1/16
 no ip address
 cem 0
  xconnect 2.2.2.2 10 encapsulation mpls

Check for cross-connect configuration using the following command:

Router#show xconnect all  | i 0/1/32
UP pri   ac CE0/1/32:0(CESoPSN Basic)    UP mpls 2.2.2.2:10       UP

Router#sh controllers  t1 0/1/32
T1 0/1/32 is up
  Applique type is NCS4200-48T1E1-CE
  Cablelength is short 110
  No alarms detected.
  alarm-trigger is not set
  Soaking time: 3, Clearance time: 10
  AIS State:Clear  LOS State:Clear  LOF State:Clear 
  Framing is ESF, Line Code is B8ZS, Clock Source is Line.

Use the following commands to verify the pseudowire configuration for CESoPSN:

• show cem circuit—Displays information about the circuit state, administrative state, the CEM ID of the circuit, and the interface on which it is configured. If cross connect is configured under the circuit, the command output also includes information about the attachment circuit status.

• show mpls l2 vc—Displays information about the MPLS VC.

• show mpls l2 vc detail—Displays detailed information about the MPLS VC.

PE1#show mpls l2 vc 10

Local intf     Local circuit              Dest address    VC ID      Status
-------------  -------------------------- --------------- ---------- ----------
CE0/1/32       CESoPSN Basic 0            2.2.2.2         10         UP        

PE1#sh mpls l2 vc 10 detail 
Local interface: CE0/1/32 up, line protocol up, CESoPSN Basic 0 up
  Destination address: 2.2.2.2, VC ID: 10, VC status: up
    Output interface: Te0/0/0, imposed label stack {650}
    Preferred path: not configured  
    Default path: active
    Next hop: 123.123.123.2
  Create time: 00:21:25, last status change time: 00:21:25
    Last label FSM state change time: 00:21:25
  Signaling protocol: LDP, peer 2.2.2.2:0 up
    Targeted Hello: 1.1.1.1(LDP Id) -> 2.2.2.2, LDP is UP
    Graceful restart: configured and not enabled
    Non stop routing: not configured and not enabled
    Status TLV support (local/remote)   : enabled/supported
      LDP route watch                   : enabled
      Label/status state machine        : established, LruRru
      Last local dataplane   status rcvd: No fault
      Last BFD dataplane     status rcvd: Not sent
      Last BFD peer monitor  status rcvd: No fault
      Last local AC  circuit status rcvd: No fault
      Last local AC  circuit status sent: No fault
      Last local PW i/f circ status rcvd: No fault
      Last local LDP TLV     status sent: No fault
      Last remote LDP TLV    status rcvd: No fault
      Last remote LDP ADJ    status rcvd: No fault
    MPLS VC labels: local 577, remote 650 
    Group ID: local 238, remote 276
    MTU: local 0, remote 0
    Remote interface description: 
  Sequencing: receive disabled, send disabled
  Control Word: On (configured: autosense)
  SSO Descriptor: 2.2.2.2/10, local label: 577
  Dataplane:
    SSM segment/switch IDs: 6893171/4140658 (used), PWID: 674
  VC statistics:
    transit packet totals: receive 0, send 0
    transit byte totals:   receive 0, send 0
    transit packet drops:  receive 0, seq error 0, send 0

enable
configure terminal
controller T1 0/1/0
framing unframed
clock source internal
linecode b8zs
cablelength short 110
cem-group 0 unframed
description TO_CE1_0/1/0

enable
configure terminal
controller T1 0/1/3
framing unframed
clock source recovered 0
linecode b8zs
cablelength short 110
cem-group 0 unframed
description TO_CE1_0/1/1

The following section describes how to create a DS1 local connection:

enable
configure terminal
connect ds1_connect CEM0/1/0 0 CEM0/1/3 0

Use the following commands to verify the DS1 local connection:

• show connection name—Displays information about the connection state and segment state.

Router#show connection name ds1_connect

Connection: 673 – ds1_connect
 Current State: UP
 Segment 1: CEM0/1/0 SATOP T1 0 up
 Segment 2: CEM0/1/3 SATOP T1 0 up