Figure 1 shows the logic of the DS3 port configuration.
The following shows the steps to configure a channelized port on a 12-port DS3 MDA:
A:ALA-A>config# port 7/1/1
A:ALA-A>config>port# tdm
To set the channelized mode on a port, the DS3 parameter must be in a shutdown state. Clear channel uses out-of-band signaling, not in-band signaling, so the channel's entire bit rate is available. Channelized ports use in-band signaling and must be explicitly enabled as shown:
A:ALA-A>config>port>tdm# ds3
A:ALA-A>config>port>tdm>ds3# shutdown
A:ALA-A>config>port>tdm>ds3# channelized ds1
A:ALA-A>config>port>tdm>ds3# no shutdown
A:ALA-A>config>port>tdm>ds3# exit
In the DS1 context, configure DS0 channel groups parameters. 24 timeslots can be configured per channel group as shown:
A:ALA-A>config>port>tdm# ds1 1
A:ALA-A>config>port>tdm>ds1# no shutdown
A:ALA-A>config>port>tdm>ds1# channel-group 1
A:ALA-A>config>port>tdm>ds1>channel-group# timeslots 1
A:ALA-A>config>port>tdm>ds1>channel-group# encap-type frame-relay
A:ALA-A>config>port>tdm>ds1>channel-group# no shutdown
A:ALA-A>config>port>tdm>ds1>channel-group# exit
A:ALA-A>config>port>tdm>ds1# channel-group 2
A:ALA-A>config>port>tdm>ds1>channel-group# timeslots 2-10
A:ALA-A>config>port>tdm>ds1>channel-group# no shutdown
A:ALA-A>config>port>tdm>ds1>channel-group# exit
A:ALA-A>config>port>tdm>ds1# exit
A:ALA-A>config>port>tdm# ds1 2
A:ALA-A>config>port>tdm>ds1# channel-group 1
A:ALA-A>config>port>tdm>ds1>channel-group# timeslots 1
A:ALA-A>config>port>tdm>ds1>channel-group# exit
A:ALA-A>config>port>tdm>ds1# no shutdown
A:ALA-A>config>port>tdm>ds1# channel-group 2
A:ALA-A>config>port>tdm>ds1>channel-group# timeslots 2
A:ALA-A>config>port>tdm>ds1>channel-group# exit
A:ALA-A>config>port>tdm>ds1# no shutdown
The following output shows the channelized mode configuration:
A:ALA-A>config>port># info
----------------------------------------------
tdm
ds3 ds3
channelized ds1
no shutdown
exit
ds1 ds1-1
channel-group 1
encap-type frame-relay
timeslots 1
frame-relay
exit
no shutdown
exit
channel-group 2
shutdown
timeslots 2-10
exit
no shutdown
exit
ds1 ds1-2
channel-group 1
shutdown
timeslots 1
exit
channel-group 2
timeslots 2
no shutdown
exit
no shutdown
exit
exit
no shutdown
----------------------------------------------
A:ALA-A>config>port#
Services can be applied to the configured channelized ports. The following example shows the CLI usage to configure a customer IES service with interface SAPs on the channelized ports. See the 7450 ESS, 7750 SR, 7950 XRS, and VSR Services Overview Guide for information about how to configure services.
A:ALA-A>config>service# ies 103 customer 1 create
A:ALA-A>config>service>ies$ interface test1 create
A:ALA-A>config>service>ies>if$ address 192.168.1.1/24
A:ALA-A>config>service>ies>if# sap 7/1/1.1.2 create
A:ALA-A>config>service>ies>if>sap$ exit
A:ALA-A>config>service>ies>if# no shutdown
A:ALA-A>config>service>ies>if# exit
A:ALA-A>config>service>ies# interface test2 create
A:ALA-A>config>service>ies>if$ address 192.168.2.1/24
A:ALA-A>config>service>ies>if$ sap 7/1/1.2.1 create
A:ALA-A>config>service>ies>if>sap$ exit
A:ALA-A>config>service>ies>if# no shutdown
A:ALA-A>config>service>ies>if# exit
A:ALA-A>config>service>ies>if#
The following output shows the channelized ports (7/1/1.1.1 and 7/1/1.1.2) applied to SAPs on the IES service configuration:
A:ALA-A>config>service>ies# info
----------------------------------------------
...
ies 103 customer 1 vpn 103 create
interface "test2" create
address 192.168.2.1/24
sap 7/1/1.2.1 create
exit
exit
interface "test1" create
address 192.168.1.1/24
sap 7/1/1.1.2 create
exit
exit
no shutdown
exit
...
----------------------------------------------
A:ALA-A>config>service>ies#