Packet Forwarding Process After The Ip Multicast Policy Routing Is Applied; Configuring Ip Multicast Policy Routing; Defining A Route-Policy - 3Com 3C13636 Configuration Manual

3Com Router 3000 Ethernet Family
Configuration Guide
specified through an interface-based ACL (ranging from 1000 to 1999). The next hop IP
address list is specified through a standard ACL (ranging from 2000 to 2999).
13.1.3 Packet Forwarding Process after the IP Multicast Policy Routing is
Applied
For a multicast packet, if IP multicast policy routing is configured on the incoming
interface and the packet meets the match conditions of IP multicast policy routing, the
packet will be forwarded according to the actions set by the policy routing. Otherwise,
the packet will be forwarded according to the usual forwarding process.

13.2 Configuring IP Multicast Policy Routing

IP Multicast Policy Routing Configuration includes:
Define a route-policy
Define the if-match clause for IP multicast routing policy
Define the apply clause of the route-policy
Enable IP multicast policy routing on an interface

13.2.1 Defining a Route-Policy

Multiple policy-nodes with different conditions and actions can be configured in a
route-policy. Each policy-node has its own if-match clauses and apply clauses. Their
match order is specified by sequence-number.
Perform the following configurations in system view.
Table 13-1 Define a route-policy
Define
route-policy
Remove
route-policy
When IP multicast policy routing is configured on an interface of a router, all multicast
data packets that enter the router from this interface will be filtered. The filtering method
is that all policy-nodes of the route-policy specified by the policy routing are processed
in order of the sequence-number from small to large.
Note that the relationship among all parts of different sequence-numbers is "or", that is,
the packet pass by every node of different sequence-number in sequence. If packet
can match if-match clause of one node, the packet will be forwarded by the apply
clause of the node and not reach all the following nodes.
Operation
a policy-node of
a policy-node of
3Com Corporation
Error! Reference source not found.Error! Ref
the route-policy policy-name { permit | deny }
node sequence-number
the undo route-policy policy-name [ permit |
deny ]
13-2
erence source not found.
Command