APS port configurations
Overview
A 7750 SR network or access port can be connected to another 7750 SR with both the working and protection channels on different IOMs in a single NE, or with the working channel on one NE and the protection channel on another.
A 7705 SAR access port can be connected to another 7705 SAR with both the working and protection channels on different MDAs on a single NE, or with the working channel on one NE and the protection channel on another.
For the 7705 SAR, for clear channels sts3 and sts12, only network mode for APS groups is supported.
Note: Mirroring parameters configured on a specific port or service are maintained during an APS failover.
All SONET/SDH MDAs support APS functionality. Table 38-2, APS port configurationsThe following table lists the possible port pairings to provide APS protection. Both ports must be of the same type and have the same traffic speed.
Table 38-2: APS port configurations
|
MDA type—Working channel |
MDA type—Protection channel |
|---|---|
|
16 × OC12/OC3 SFP |
8 × OC12/OC3 SFP or 16 × OC12/OC3 SFP |
|
8 × OC12/OC3 SFP |
8 × OC12/OC3 SFP or 16 × OC12/OC3 SFP |
|
16 × OC3 SFP |
8 × OC3 SFP or 16 × OC3 SFP |
|
8 × OC3 SFP |
8 × OC3 SFP or 16 × OC3 SFP |
|
4 × OC48 SFP |
2 × OC48 SFP or 4 × OC48 SFP |
|
2 × OC48 SFP |
2 × OC48 SFP or 4 × OC48 SFP |
|
1 × OC192 |
1 × OC192 |
|
16 × ATM OC3 SFP |
16 × ATM OC3 SFP |
|
4 × ATM OC12/OC3 SFP |
4 × ATM OC12/OC3 SFP |
|
4 × Channelized OC3 ASAP |
4 × Channelized OC3 ASAP |
|
4 × Channelized OC3/OC12 ASAP SFP |
4 × Channelized OC3/OC12 ASAP SFP |
|
1 × Channelized OC12 ASAP |
1 × Channelized OC12 ASAP |
|
1 × Channelized OC3 CES |
4 × Channelized OC3 CES |
|
4 × Channelized OC3 CES |
1 × Channelized OC3 CES |
|
1 × Channelized OC12 CES |
1 × Channelized OC12 CES |
Note: The working and protection channels for the following MDA port pairs are set to the same traffic speed based on the APS group speed configuration: