Cisco ASR 1000 Series

For the 4-Port Channelized T3 SPA, the interface address format is slot/subslot/port/t1-number:channel-group,
where:
• t1-number—Specifies the logical T1 number in channelized mode.
• channel-group—Specifies the logical channel group assigned to the time slots within the T1 link.
For more information about identifying slots and subslots, see the “Identifying Slots and Subslots for the SIPs
and SPAs” section in the Configuring the SIP chapter.
Optional Configurations
There are several standard, but optional, configurations that might be necessary to complete the configuration
of your serial SPA.
Configuring Data Service Unit Mode
Configure the SPA to connect with customer premises Data Service Units (DSUs) by setting the DSU mode.
Subrating a T3 or E3 interface reduces the peak access rate by limiting the data transfer rate. To configure
the DSU mode, use the following commands:
SUMMARY STEPS
1.
Router# configure terminal
2.
Router(config)# interface serial slot/subslot/port
3.
Router(config-if)# dsu mode {0 | 1 | 2 | 3 | 4}
4.
Router(config-if)# dsu bandwidth kbps
DETAILED STEPS
PurposeCommand or Action
Enters global configuration mode.Router# configure terminal
Step 1
Selects the interface to configure and enters interface configuration mode.Router(config)# interface serial
slot/subslot/port
Step 2
Specifies the interoperability mode used by the T3 controller.Router(config-if)# dsu mode {0 | 1
| 2 | 3 | 4}
Step 3
• 0—Connects a T3 controller to another T3 controller or to a Digital Link
DSU. Bandwidth range is from 300 to 44210 kbps. This is the default.
• 1—Connects a T3 controller to a Kentrox DSU. Bandwidth range is from
1500 to 35000, or 44210 kbps.
If the bandwidth is set between 35000 and 44210 kbps, an error message
is displayed.
Note
• 2—Connects a T3 controller to a Larscom DSU. Bandwidth range is from
3100 to 44210 kbps.
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide, Cisco IOS XE
Everest 16.5
OL-14127-17 243
Configuring the 2-Port and 4-Port Channelized T3 SPAs
Optional Configurations