Traffic management on the 7705 SAR uses a packet-based implementation of the dual leaky bucket model. Each queue has a guaranteed space limited with CBS and a maximum depth limited with MBS. New packets are queued as they arrive. Any packet that causes the MBS to be exceeded is discarded.
The packets in the queue are serviced by two different profiled (rate-based) schedulers, the In-Profile and Out-of-Profile schedulers, where CIR traffic is scheduled before PIR traffic. These two schedulers empty the queue continuously.
For 4-priority scheduling, rate-based schedulers (CIR and PIR) are combined with queue-type schedulers (EXP or BE). For 16-priority scheduling, the rate-based schedulers are combined with the strict priority schedulers (CoS-8 queue first to CoS-1 queue last).
Access ingress scheduling is supported on the adapter cards and ports listed in Table: Scheduling Modes Supported by Adapter Cards and Ports at Access Ingress. The supported scheduling modes are 4-priority scheduling and 16-priority scheduling. Table: Scheduling Modes Supported by Adapter Cards and Ports at Access Ingress shows which scheduling mode each card and port supports at access ingress.
This section also contains information on the following topics:
Adapter Card or Port |
4-Priority |
16-Priority |
|---|---|---|
8-port Gigabit Ethernet Adapter card |
✓ |
✓ |
Packet Microwave Adapter card |
✓ |
✓ |
6-port Ethernet 10Gbps Adapter card1 |
✓ |
|
10-port 1GigE/1-port 10GigE X-Adapter card (in 10-port 1GigE mode) |
✓ |
✓ |
4-port SAR-H Fast Ethernet module |
✓ |
|
6-port SAR-M Ethernet module |
✓ |
✓ |
Ethernet ports on the 7705 SAR-A |
✓ |
✓ |
Ethernet ports on the 7705 SAR-Ax |
✓ |
✓ |
Ethernet ports on the 7705 SAR-H |
✓ |
✓ |
Ethernet ports on the 7705 SAR-Hc |
✓ |
✓ |
Ethernet ports on the 7705 SAR-M |
✓ |
✓ |
Ethernet ports on the 7705 SAR-Wx |
✓ |
✓ |
Ethernet ports on the 7705 SAR-X1 |
✓ |
|
16-port T1/E1 ASAP Adapter card |
✓ |
|
32-port T1/E1 ASAP Adapter card |
✓ |
|
2-port OC3/STM1 Channelized Adapter card |
✓ |
|
4-port OC3/STM1 Clear Channel Adapter card |
✓ |
|
4-port OC3/STM1 / 1-port OC12/STM4 Adapter card |
✓ |
|
4-port DS3/E3 Adapter card |
✓ |
|
T1/E1 ASAP ports on the 7705 SAR-A |
✓ |
|
T1/E1 ASAP ports on the 7705 SAR-M |
✓ |
|
TDM ports on the 7705 SAR-X |
✓ |
|
12-port Serial Data Interface card |
✓ |
|
6-port E&M Adapter card |
✓ |
|
6-port FXS Adapter card |
✓ |
|
8-port FXO Adapter card |
✓ |
|
8-port Voice & Teleprotection card |
✓ |
|
8-port C37.94 Teleprotection card |
✓ |
|
Integrated Services card |
✓ |