
Chapter 7 Route
Table 24 Command Summary: Policy Route (continued)
COMMAND | DESCRIPTION |
show | Displays the specified range of policy route |
policy_number | settings. |
|
|
show | Displays whether or not the NXC forwards |
| packets that match a policy route according to |
| the policy route instead of sending the packets to |
| a directly connected network. |
|
|
show | Displays the number of policy routes that have |
| been configured on the NXC. |
show | Displays all policy route rule details for advanced |
| debugging. |
show bwm activation | Displays whether or not the global setting for |
| bandwidth management on the NXC is enabled. |
show | Displays the specified policy route or interface’s |
[interface interface_name] | bandwidth allotment, current bandwidth usage, |
| and bandwidth usage statistics. |
7.2.1 Assured Forwarding (AF) PHB for DiffServ
Assured Forwarding (AF) behavior is defined in RFC 2597. The AF behavior group defines four AF classes. Inside each class, packets are given a high, medium or low drop precedence. The drop precedence determines the probability that routers in the network will drop packets when congestion occurs. If congestion occurs between classes, the traffic in the higher class (smaller numbered class) is generally given priority. Combining the classes and drop precedence produces the following twelve DSCP encodings from AF11 through AF43. The decimal equivalent is listed in brackets.
Table 25 Assured Forwarding (AF) Behavior Group
| CLASS 1 | CLASS 2 | CLASS 3 | CLASS 4 |
Low Drop Precedence | AF11 (10) | AF21 (18) | AF31 (26) | AF41 (34) |
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Medium Drop Precedence | AF12 (12) | AF22 (20) | AF32 (28) | AF42 (36) |
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High Drop Precedence | AF13 (14) | AF23 (22) | AF33 (30) | AF43 (38) |
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NXC CLI Reference Guide |
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