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Checking Your Work

To verify correct operation of a channelized T1 IQ interface, use the following commands:

To view the interface names of the physical channelized T1 IQ interface and the resulting interfaces configured on the channelized IQ interface, use the show interfaces controller command:

user@RouterA> show interfaces controller ct1-2/3/7

Controller                                                           Admin Link

ct1-2/3/7                                                            up    up

    ds-2/3/7:1                                                       up    up

    ds-2/3/7:2                                                       up    up



# ct1-2/3/7 is the physical channelized T1 IQ interface, and ds-2/3/7:1 and 
ds-2/3/7:2 are the resulting NxDS0 interfaces.



user@RouterA> show interfaces controller ct1-2/3/8

Controller                                                           Admin Link

ct1-2/3/8                                                            up    up

t1-2/3/8                                                             up    up



# ct1-2/3/8 is the physical channelized T1 IQ interface, and t1-2/3/8 is the resulting 
T1 interface.

To view information about the physical channelized interface, include the ct1-fpc/pic/port (interface name) option with the show interfaces command: 

user@RouterA> show interfaces ct1-2/3/7

Physical interface: ct1-2/3/7, Enabled, Physical link is Up

  Interface index: 18, SNMP ifIndex: 1128, Generation: 27

  Link-level type: Controller, Clocking: Internal, Speed: T1,

  Loopback: None, Framing: ESF, Parent: None

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps 16384

  Link flags     : None

  Hold-times     : Up 0 ms, Down 0 ms

  CoS queues     : 4 supported

  Last flapped   : 2005-08-01 18:00:12 PDT (1d 00:31 ago)

  Input rate     : 0 bps (0 pps)

  Output rate    : 0 bps (0 pps)

  Statistics last cleared: Never

  DS1   alarms   : None

  DS1   defects  : None

    Line encoding: B8ZS



user@RouterA> show interfaces ct1-2/3/8

Physical interface: ct1-2/3/8, Enabled, Physical link is Up

  Interface index: 25, SNMP ifIndex: 1134, Generation: 28

  Link-level type: Controller, Clocking: Internal, Speed: T1,

  Loopback: None, Framing: ESF, Parent: None

  FCS: 16, Framing: G704, Parent: None

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps 16384

  Link flags     : None

  Hold-times     : Up 0 ms, Down 0 ms

  CoS queues     : 4 supported

  Last flapped   : 2005-08-01 18:00:11 PDT (1d 00:30 ago)

  Input rate     : 0 bps (0 pps)

  Output rate    : 0 bps (0 pps)

  Statistics last cleared: Never

  DS1   alarms   : None

  DS1   defects  : None

    Line encoding: B8ZS

To view information about an NxDS0 interface, include the ds-fpc/pic/port:channel (interface name) option with the show interfaces command:

user@RouterA> show interfaces ds-2/3/7:1 detail

Physical interface: ds-2/3/7:1, Enabled, Physical link is Up

  Interface index: 73, SNMP ifIndex: 1202, Generation: 325

  Link-level type: PPP, MTU: 1504, Clocking: Internal, Speed: 64kbps, Loopback: None,

  FCS: 16, Parent: ct1-2/3/7 Interface index 18

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps 16384

  Link flags     : Keepalives

  Hold-times     : Up 0 ms, Down 0 ms

  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3

  Keepalive statistics:

    Input : 11 (last seen 00:00:02 ago)

    Output: 10 (last sent 00:00:06 ago)

  LCP state: Opened

  NCP state: inet: Opened, inet6: Opened, iso: Opened, mpls: Not-configured

  CHAP state: Not-configured

  CoS queues     : 4 supported

  Last flapped   : 2005-08-03 12:30:37 PDT (00:10:26 ago)

  Statistics last cleared: Never

  Traffic statistics:

   Input  bytes  :                  559                   56 bps

   Output bytes  :                  656                   56 bps

   Input  packets:                   33                    0 pps

   Output packets:                   36                    0 pps

  Queue counters:       Queued packets  Transmitted packets      Dropped packets

    0 best-effort                   40                   40                    0

    1 expedited-fo                   0                    0                    0

    2 assured-forw                   0                    0                    0

    3 network-cont                   0                    0                    0



  Logical interface ds-2/3/7:1.0 (Index 36) (SNMP ifIndex 1266) (Generation 153)

    Flags: Point-To-Point SNMP-Traps Encapsulation: PPP

    Protocol inet, MTU: 1500, Generation: 352, Route table: 0

      Flags: None

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: 10.25.1/24, Local: 10.25.1.2, Broadcast: 10.25.1.255,

        Generation: 445

    Protocol iso, MTU: 1500, Generation: 353, Route table: 0

      Flags: Is-Primary

    Protocol inet6, MTU: 1500, Generation: 354, Route table: 0

      Flags: Is-Primary

      Addresses, Flags: Is-Preferred

        Destination: fe80::/64, Local: fe80::2a0:a5ff:fe3d:ac6, Broadcast: Unspecified,

        Generation: 446

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: feee::10:25:1:0/126, Local: feee::10:25:1:2,

        Broadcast: Unspecified, Generation: 448

To view information about a T1 or fractional T1 interface, include the t1-fpc/pic/port (interface name) option with the show interfaces command. The Speed: field shows if the interface is a full T1(T1) or a fractional T1 (increments of 64 kbps). In this case, t1-2/3/8 is a fractional T1 using two 64-kbps time slots for a total speed of 128 kbps.

user@RouterA> show interfaces t1-2/3/8 detail

Physical interface: t1-2/3/8, Enabled, Physical link is Up

  Interface index: 89, SNMP ifIndex: 1278, Generation: 341

  Link-level type: PPP, MTU: 1504, Clocking: Internal, Speed: 128kbps,

  Loopback: None, FCS: 16, Parent: ct1-2/3/8 Interface index 25

  Device flags   : Present Running

  Interface flags: Point-To-Point SNMP-Traps 16384

  Link flags     : Keepalives

  Hold-times     : Up 0 ms, Down 0 ms

  Keepalive settings: Interval 10 seconds, Up-count 1, Down-count 3

  Keepalive statistics:

    Input : 4 (last seen 00:00:05 ago)

    Output: 3 (last sent 00:00:09 ago)

  LCP state: Opened

  NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:

  Not-configured

  CHAP state: Not-configured

  CoS queues     : 4 supported

  Last flapped   : 2005-08-03 12:30:37 PDT (01:17:36 ago)

  Statistics last cleared: Never

  Traffic statistics:

   Input  bytes  :                  189                    0 bps

   Output bytes  :                  478                    0 bps

   Input  packets:                   13                    0 pps

   Output packets:                   28                    0 pps

  Queue counters:       Queued packets  Transmitted packets      Dropped packets

    0 best-effort                   28                   28                    0

    1 expedited-fo                   0                    0                    0

    2 assured-forw                   0                    0                    0

    3 network-cont                   0                    0                    0

  DS1   alarms   : None

  DS1   defects  : None



  Logical interface t1-2/3/8.0 (Index 52) (SNMP ifIndex 1279) (Generation 169)

    Flags: Point-To-Point SNMP-Traps Encapsulation: PPP

    Protocol inet, MTU: 1500, Generation: 401, Route table: 0

      Flags: None

      Addresses, Flags: Is-Preferred Is-Primary

        Destination: 10.255.126/24, Local: 10.255.126.2,

        Broadcast: 10.255.126.255, Generation: 525
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