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Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
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Chapter 15 Configuring the 8-Port Channelized T1/E1 SPA
Configuration Tasks
• slot—Specifies the chassis slot number in the Cisco ASR 1000 Series Routers where the SIP is
installed.
• subslot—Specifies the slot of the SIP where the SPA is installed.
• port—Specifies the number of the individual interface port on a SPA.
The following example shows how to specify the first interface (0) on a SPA installed in the first subslot
of a SIP (0) installed in chassis slot 3:
Router(config)# interface serial 3/0/0
This command shows a serial SPA as a representative example, however the same slot/subslot/port
format is similarly used for other SPAs (such as ATM and POS) and other non-channelized SPAs.
For the 8-Port Channelized T1/E1 SPA, the interface address format is slot/subslot/port:channel-group,
where:
• 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
SIP and SPAs” section on page 4-1.
Optional Configurations
There are several standard, but optional, configurations that might be necessary to complete the
configuration of your serial SPA.
• Configuring Framing, page 15-8
• Configuring Encapsulation, page 15-9
• Configuring the CRC Size for T1, page 15-10
• Configuring FDL, page 15-11
• Invert Data on the T1/E1 Interface, page 15-11
• Changing a Channel Group Configuration, page 15-12
• Configuring QoS Features on Serial SPAs, page 15-12