Related Documentation
Configuring SAToP on 4-Port Channelized OC3/STM1 Circuit Emulation PICs
This configuration applies to the mobile backhaul application shown in Mobile Backhaul Application.
Configuring SONET/SDH Framing Mode at the PIC Level
To set the framing mode at the PIC level, for all four ports on the PIC, include the framing statement at the [edit chassis fpc fpc-slot pic pic-slot] hierarchy level.
After a PIC is brought online, interfaces are created for the PIC’s available ports according to the PIC type and the framing option used.
- If you include the framing sonet statement (for a COC3 Circuit Emulation PIC), four COC3 interfaces are created.
- If you include the framing sdh statement (for a CSTM1 Circuit Emulation PIC), four CSTM1 interfaces are created.
- If you do not specify framing at the PIC level, then the default framing is SONET for all four ports.
 | Note: If you set the framing option incorrectly for the PIC type, the commit operation fails. Bit error rate test (BERT) patterns with all ones received by T1/E1 interfaces on Circuit Emulation PICs configured for SAToP do not result in an alarm indication signal (AIS) defect. As a result, the T1/E1 interfaces remain up. |
Configuring SONET/SDH Framing Mode at the Port Level
Each port’s framing mode can be configured individually, as either COC3 (SONET) or STM1 (SDH). Ports not configured for framing retain the PIC framing configuration, which is SONET by default if you have not specified framing at the PIC level. To set the framing mode for individual ports, include the framing statement at the [edit chassis fpc fpc-slot pic pic-slot port port-number] hierarchy level:
Configuring the framing mode at the port level overwrites the previous PIC-level framing mode configuration for the specified port. Subsequently, configuring the PIC-level framing mode overwrites the port-level framing configuration. For example, if you want three STM1 ports and one COC3 port, then it is practical to first configure the PIC for SDH framing and then configure one port for SONET framing.
Configuring COC3 Ports Down to T1 Channels
On any port configured for SONET framing (numbered 0 through 3), you can configure three COC1 channels (numbered 1 through 3). On each COC1 channel, you can configure 28 T1 channels (numbered 1 through 28).
To configure COC3 channelization down to COC1 and then down to T1 channels, include the partition statement at the [edit interfaces (coc1 | coc3)-fpc-slot/pic-slot/port] hierarchy level:
- In configuration mode, go to the [edit interfaces coc3-fpc-slot/pic-slot/port][edit]user@host# edit interfaces coc3-fpc-slot/pic-slot/port
For example:
[edit]user@host# edit interfaces coc3-1/0/0 - Configure the sublevel interface partition index, range
of SONET/SDH slices, and sublevel interface type.[edit interfaces coc3-1/0/0]user@host# set partition partition-number oc-slice oc-slice interface-type coc1
For example:
[edit interfaces coc3-1/0/0]user@host# set partition 1 oc-slice 1 interface-type coc1 - Enter up command to go to [edit interfaces] hierarchy level.[edit interfaces coc3-1/0/0]user@host# up
- Configure the channelized OC1 interface, sublevel interface
partition index, and the interface type.[edit interfaces]user@host# set coc1-1/0/0:1 partition partition-number interface-type t1
For example:
[edit interfaces]user@host# set coc1-1/0/0:1 partition 1 interface-type t1
To verify the configuration use the show command at the [edit interfaces] hierarchy level.
After you partition the T1 channels, configure the SAToP options on them in the same way as you do on T1 interfaces. See Setting the SAToP Options.
Configuring CSTM1 Ports Down to E1 Channels
On any port configured for SDH framing (numbered 0 through 3), you can configure one CAU4 channel. On each CAU4 channel, you can configure 63 T1 channels (numbered 1 through 63).
To configure CSTM1 channelization down to CAU4 and then down to E1 channels, include statements for the various interface types at the [edit interfaces] hierarchy level.
- In configuration mode, go to the [edit interfaces cstm1-fpc-slot/pic-slot/port][edit][edit interfaces cstm1-fpc-slot/pic-slot/port]
For example:
[edit][edit interfaces cstm1-1/0/1] - Configure the channelize interface as clear channel and
the set the interface-type as cau4[edit interfaces cstm1-1/0/1]user@host# set no-partition interface-type cau4;
- Enter up to go to [edit interfaces] hierarchy level.
- Configure the fpc slot, pic slot and the port for CAU4
interface. Set the sublevel interface partition index and set the
interface type as E1.[edit interfaces] user@host# set cau4-fpc-slot/pic-slot/port partition partition-number interface-type e1
For example:
[edit interfaces] user@host# set cau4-1/0/1 partition 1 interface-type e1 - Enter up to go to [edit interfaces] hierarchy level.
- Configure the fpc slot, pic slot and the port for E1 interface.
Set the Structure-Agnostic TDM over Packet and the logical interface
for E1 interface[edit interfaces]user@host# set e1-fpc-slot/pic-slot/port:channel encapsulation encapsulation-type unit interface-unit-number;
For example:
[edit interfaces]user@host# set e1-1/0/:1 encapsulation satop unit 0;
To verify the configuration use the show command at the [edit interfaces] hierarchy level.
After you configure the E1 channels, configure SAToP options on them in the same way as you do on E1 interfaces. See Setting the SAToP Options.
