Related Documentation
- M Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- MX Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- T Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- Additional Information
- Channelized IQ Interfaces Solutions Page
Example: Channelized T1 IQ Interface Configuration
Figure 1: Channelized T1 IQ Interface Example
The following example shows two ways to configure a channelized T1 IQ interface. Figure 1 shows a fractional T1 method and the NxDS0 method seen previously in the complex OC12 configuration example (see Example: Complex Configuration for a Channelized OC12 IQ Interface). The NxDS0 method breaks the channelized T1 IQ interface into discrete DS0 blocks, whereas the fractional method creates a clear channel T1 that is segmented by time slots.
To configure NxDS0 channels, include the partition statement at the [edit interfaces ct1-fpc/pic/port] hierarchy level. Include the timeslots and interface-type ds options to create the desired number of NxDS0 interfaces in time slots 1 through 24.
To configure a clear channel T1 on a channelized T1 IQ interface, include the no-partition statement with the interface-type t1 option at the [edit interfaces ct1-fpc/pic/port] hierarchy level. After you commit this configuration, you can create a fractional T1 on the clear channel T1 interface. To do so, include the timeslots statement at the [edit interfaces t1-fpc/pic/port t1-options] hierarchy level and specify the number of DS0 blocks to be allowed in the fractional T1 interface. The minimum number of 64-Kbps DS0 blocks you can configure is 1 and the maximum is 24.
Usually, you configure loopback statements at the controller level for all IQ-based channelized interfaces. One exception for channelized T1 IQ interfaces is that you must configure a payload loopback on a T1 IQ interface instead of the controller-level channelized T1 IQ interface. To configure, include the payload option at the [edit interfaces t1-fpc/pic/port t1-options loopback] hierarchy level.
Router A—NxDS0 Method
Router A—Fractional T1 Method
Verifying Your Work
To verify correct operation of a channelized T1 IQ interface, use the following commands:
- show interfaces
- show interfaces controller
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 N xDS0 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 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 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 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
Related Documentation
- M Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- MX Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- T Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- Additional Information
- Channelized IQ Interfaces Solutions Page
