3com MSR 20-20 참조 매뉴얼

additive: Adds to the original community attribute of a route.

Use the apply extcommunity command to apply the specified extended 
community attribute to BGP routes.

Use the undo apply extcommunity command to remove the clause 
configuration.

No extended community attribute is set for routing information by default.

# Create routing policy policy1 with node 10, matching mode as permit. If a BGP 
route matches AS-path-ACL 1, add the RT extended community attribute 100:2 to 
the route.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy] if-match as-path 1

[Sysname-route-policy] apply extcommunity rt 100:2 additive 

apply isis { level-1 | level-1-2 | level-2 }

Routing policy view

level-1: Redistributes routes into IS-IS level-1 area.

level-2: Redistributes routes into IS-IS level-2 area.

level-1-2: Redistributes routes into IS-IS level-1 and level-2 areas.

Use the apply isis command to redistribute routes into a specified ISIS level.

Use the undo apply isis command to remove the clause configuration.

No level is set by default.

if-match interface, if-match acl, if-match ip-prefix, if-match ip next-hop, 
if-match cost, if-match tag, route-policy, apply cost, apply origin and apply 
tag.

# Create routing policy policy1 with node 10, matching mode as permit. If a route 
matches tag 8, redistribute the route to IS-IS level-2 area.

<Sysname> system-view

[Sysname] route-policy policy1 permit node 10

[Sysname-route-policy] if-match tag 8

[Sysname-route-policy] apply isis level-2