Related Documentation
- M, MX, T Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- Additional Information
- Channelized IQ Interfaces Solutions Page
Example: Channelized DS3 IQ Interface Configuration
Figure 1: Channelized DS3 IQ Interface Example
This example shows how to configure a channelized DS3 IQ interface. Figure 1 shows the breakdown of a DS3 interface into a variety of channels. The path that leads to NxDS0 channels is similar to the M13 with C-bit parity method seen previously in the complex OC12 configuration example (see Example: Complex Configuration for a Channelized OC12 IQ Interface). This method breaks the channelized DS3 IQ interface into channelized T1s before additional splits create DS0 time slots.
To create T1 channels, include the partition statement at the [edit interfaces ct3-fpc/pic/port] hierarchy level with the interface-type t1 option. To create channelized T1 channels, include the partition statement at the [edit interfaces ct3-fpc/pic/port] hierarchy level with the interface-type ct1 option.
After you have established a channelized T1 channel, you can split it into a maximum of 24 NxDS0 channels. To configure NxDS0 channels, include the partition statement at the [edit interfaces ct1-fpc/pic/port:channel] hierarchy level with the timeslots and interface-type ds options to create the desired number of NxDS0 channels or channel groups.
Although it is not part of the example shown, you can also create a clear channel T3 or a fractional T3 interface on a channelized DS3 IQ interface. To configure a clear channel T3 or fractional T3 interface, include the no-partition statement at the [edit interfaces ct3-fpc/pic /port] hierarchy level. After you commit this part of the configuration, a clear channel T3 interface is established. You can configure standard T3 options on this interface. To fractionalize the T3 interface, include the timeslots statement at the [edit interfaces t3-fpc/pic/port t3-options] hierarchy level.
Router A
Verifying Your Work
To verify correct operation of a channelized DS3 IQ interface, use the following commands:
- show interfaces
- show interfaces controller
- show interfaces interval (for T3, channelized T3, T1, and channelized T1 channels)
To view the interface names of the physical channelized DS3 IQ interface and the channels configured on this interface, use the show interfaces controller command:
user@RouterA> show interfaces controller
ct3-0/0/1 Controller Admin Link
ct3-0/0/1 up up
# This is the physical channelized DS3 (channelized T3) IQ interface.
t1-0/0/1:1 up up
# Channel 1 is a channelized T1 interface.
ct1-0/0/1:2 up up
ds-0/0/1:2:1 up up
ds-0/0/1:2:2 up up
ds-0/0/1:2:3 up up
t1-0/0/1:3 up down
t1-0/0/1:4 up up
t1-0/0/1:5 up up
t1-0/0/1:6 up up
t1-0/0/1:7 up up
t1-0/0/1:8 up up
t1-0/0/1:9 up up
t1-0/0/1:10 up up
# Channels 3 through 10 are T1 interfaces.
ct1-0/0/1:11 up up
ct1-0/0/1:12 up up
ct1-0/0/1:13 up up
ct1-0/0/1:14 up up
ct1-0/0/1:15 up up
ct1-0/0/1:16 up up
ct1-0/0/1:17 up up
ct1-0/0/1:18 up up
ct1-0/0/1:19 up up
ct1-0/0/1:20 up up
ct1-0/0/1:21 up up
ct1-0/0/1:22 up up
ct1-0/0/1:23 up up
ct1-0/0/1:24 up up
ct1-0/0/1:25 up up
ct1-0/0/1:26 up up
ct1-0/0/1:27 up up
ct1-0/0/1:28 up up
# Channels 11 through 28 are channelized T1 interfaces.
To view information about the physical channelized interface, include the ct3-fpc/pic/port option with the show interfaces command:
user@RouterA> show interfaces extensive
ct3-0/0/1 Physical interface: ct3-0/0/1, Enabled, Physical link is Up
Interface index: 30, SNMP ifIndex: 317, Generation: 29
Link-level type: Controller, MTU: 4474, Clocking: Internal, Speed: T3,
Loopback: None, FCS: 16, Mode: C/Bit parity, Parent: None
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps
Link flags : None
Hold-times : Up 0 ms, Down 0 ms
Last flapped : 2002-10-04 10:24:18 PDT (01:40:40 ago)
Statistics last cleared: 2002-10-04 11:47:27 PDT (00:17:31 ago)
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Bucket drops: 0,
Policed discards: 0, L3 incompletes: 0, L2 channel errors: 0,
L2 mismatch timeouts: 0, HS link CRC errors: 0, SRAM errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Aged packets: 0
Active alarms : None
Active defects : None
DS3 media: Seconds Count State
PLL Lock 0 0 OK
Reframing 0 0 OK
AIS 0 0 OK
LOF 0 0 OK
LOS 0 0 OK
IDLE 0 0 OK
YELLOW 0 0 OK
BPV 0 0
EXZ 0 0
LCV 0 0
PCV 0 0
CCV 0 0
LES 0
PES 0
PSES 0
CES 0
CSES 0
SEFS 0
HDLC configuration:
Policing bucket: Disabled
Shaping bucket : Disabled
Giant threshold: 0, Runt threshold: 0
DSU configuration:
Compatibility mode: None, Scrambling: Disabled, Subrate: Disabled
FEAC loopback: Inactive, Response: Disabled, Count: 0
DS-3 BERT configuration:
BERT time period: 10 seconds, Elapsed: 0 seconds
Algorithm: 2^3 - 1, Pseudorandom (1), Induced error rate: 10e-0
Packet Forwarding Engine configuration:
Destination slot: 0 (0x00)
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % bytes
0 best-effort 95 42499200 95 0 low none
3 network-control 5 2236800 5 0 low none
To view information about a channelized T1 channel, include the ct1-fpc/pic /port:channel option with the show interfaces command:
user@RouterA> show interfaces extensive
ct1-0/0/1:2 Physical interface: ct1-0/0/1:2, Enabled, Physical link is Up
Interface index: 175, SNMP ifIndex: 1505, Generation: 174
Link-level type: Controller, MTU: 1504, Clocking: Internal, Speed: T1,
Loopback: None, FCS: 16, Framing: ESF, Parent: ct3-0/0/1 (Index 32)
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps
Link flags : None
Hold-times : Up 0 ms, Down 0 ms
Last flapped : 2002-10-04 12:08:23 PDT (00:05:57 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Policed discards: 0,
L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0,
HS link CRC errors: 0, SRAM errors: 0
Output errors:
Carrier transitions: 0, Errors: 0, Drops: 0, Aged packets: 0
DS1 alarms : None
DS1 defects : AIS, LOF
T1 media: Seconds Count State
SEF 0 0 OK
BEE 1 1 OK
AIS 355 1 Defect Active
LOF 355 1 Defect Active
LOS 0 0 OK
YELLOW 0 0 OK
BPV 0 0
EXZ 0 0
LCV 0 0
PCV 0 0
CS 0 0
LES 355
ES 355
SES 355
SEFS 355
BES 0
UAS 0
HDLC configuration:
Policing bucket: Disabled
Shaping bucket : Disabled
Giant threshold: 1514, Runt threshold: 0
Timeslots : All active
Line encoding: B8ZS, Byte encoding: Nx64K
Buildout : 0 to 132 feet
Data inversion: Disabled
DS1 BERT configuration:
BERT time period: 10 seconds, Elapsed: 0 seconds
Induced Error rate: 10e-0, Algorithm: 2^15 - 1, O.151, Pseudorandom (9)
Packet Forwarding Engine configuration:
Destination slot: 0 (0x00)
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % bytes
0 best-effort 95 1459200 95 0 low none
3 network-control 5 76800 5 0 low none
To view information about an NxDS0 interface, include the ds-fpc/pic/port:channel option with the show interfaces command. In this case, the speed is 640 Kbps because this channel contains 10 DS0s (64 x 10 = 640).
user@RouterA> show interfaces extensive
ds-0/0/1:2:1 Physical interface: ds-0/0/1:2:1, Enabled, Physical link is Up
Interface index: 176, SNMP ifIndex: 1563, Generation: 175
Link-level type: PPP, MTU: 1504, Clocking: Internal, Speed: 640kbps,
Loopback: None, FCS: 16, Parent: ct1-0/0/1:2 (Index 175)
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps
Link flags : Keepalives
Hold-times : Up 0 ms, Down 0 ms
Last flapped : 2002-10-04 12:09:06 PDT (00:05:54 ago)
Statistics last cleared: Never
Traffic statistics:
Input bytes : 0 0 bps
Output bytes : 0 0 bps
Input packets: 0 0 pps
Output packets: 0 0 pps
Input errors:
Errors: 0, Drops: 0, Framing errors: 0, Policed discards: 0,
L3 incompletes: 0, L2 channel errors: 0, L2 mismatch timeouts: 0,
HS link CRC errors: 0
Output errors:
Carrier transitions: 1, Errors: 0, Drops: 0, Aged packets: 0
Queue counters: Queued packets Transmitted packets Dropped packets
0 best-effort 0 0 0
1 expedited-fo 0 0 0
2 assured-forw 0 0 0
3 network-cont 0 0 0
Interface transmit queues:
B/W WRR Packets Bytes Drops Errors
Queue0 0 0 0 0 0 0
Queue1 0 0 0 0 0 0
HDLC configuration:
Giant threshold: 0, Runt threshold: 0
Timeslots : 1-10
Byte encoding: Nx64K, Data inversion: Disabled
Packet Forwarding Engine configuration:
Destination slot: 0, PLP byte: 4 (0x10)
CoS transmit queue Bandwidth Buffer Priority Limit
% bps % bytes
0 best-effort 95 608000 95 0 low none
3 network-control 5 32000 5 0 low none
Related Documentation
- M, MX, T Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- Additional Information
- Channelized IQ Interfaces Solutions Page
Published: 2012-11-28
Related Documentation
- M, MX, T Series
- Roadmap for Channelized IQ Interface Configuration Examples
- Roadmap for Configuring Channelized IQ Interfaces
- Additional Information
- Channelized IQ Interfaces Solutions Page
