Chapter 18 Route
ZyWALL Series CLI Reference Guide
175
18.2.1 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.
18.2.2 Policy Route Command Example
The following commands create two address objects (TW_SUBNET and GW_1) and insert a policy that
routes the packets (with the source IP address TW_SUBNET and any destination IP address) through the
show policy-route6 override-direct-
route
Displays whether or not the Zyxel Device forwards IPv6 packets that match
a policy route according to the policy route instead of sending the
packets to a directly connected network.
show policy-route rule_count
Displays the number of policy routes that have been configured on the
Zyxel Device.
show policy-route underlayer-rules
Displays all policy route rule details for advanced debugging.
show policy-route6 [policy_number]
Displays all or specified IPv6 policy route settings.
show policy-route6 begin <1..200> end
<1..200>
Displays the specified range of IPv6 policy route settings.
show policy-route6 controll-ipsec-
dynamic-rules
Displays whether the Zyxel Device checks IPv6 policy routes first before
IPSec dynamic rules.
show policy-route6 rule_count
Displays the number of IPv6 policy routes that have been configured on
the Zyxel Device.
Table 82 Command Summary: Policy Route (continued)
COMMAND DESCRIPTION
Table 83 Assured Forwarding (AF) Behavior Group
CLASS 1 CLASS 2 CLASS 3 CLASS 4
Low Drop Precedence AF11 (10) AF21 (18) AF31 (26) AF41 (34)
Medium Drop Precedence AF12 (12) AF22 (20) AF32 (28) AF42 (36)
High Drop Precedence AF13 (14) AF23 (22) AF33 (30) AF43 (38)
To Next Page
Loading...
