Brocade TurboIron 24X Series Configuration Guide - Manual (Page 750)

716 Brocade TurboIron 24X Series Configuration Guide
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Filtering
Syntax: match community exact-match
The parameter specifies the name of a community list ACL. You can specify up to five ACLs.
Separate the ACL names or IDs with spaces.
Here is another example.
These commands configure an additional community ACL, std_2, that contains community
numbers 23:45 and 57:68. Route map bgp3 compares each BGP4 route against the sets of
communities in ACLs std_1 and std_2. A BGP4 route that contains either but not both sets of
communities matches the route map. For example, a route containing communities 23:45 and
57:68 matches. However, a route containing communities 23:45, 57:68 and 12:34, or
communities 23:45, 57:68, 12:34, and no-export does not match. To match, the route
communities must be the same as those in exactly one of the community ACLs used by the match
community statement.
Setting parameters in the routes
Use the following command to define a set statement that prepends an AS number to the AS path
on each route that matches the corresponding match statement.
TurboIron(config-routemap GET_ONE)#set as-path prepend 65535
Syntax: set [as-path [prepend ]] | [automatic-tag] | [comm-list delete]
| [community : | | internet | local-as | no-advertise | no-export] |
[dampening [ ]] [[default] interface
null0 | [ip [default] next hop ] [ip next-hop peer-address] | [local-preference
] | [metric [+ | - ] | none] | [metric-type type-1 | type-2] | [metric-type
internal] | [next-hop ] | [nlri multicast | unicast | multicast unicast] | [origin igp
| incomplete] | [tag ] | [weight ]
The as-path prepend parameter adds the specified AS numbers to the front of the
AS-path list for the route.
The automatic-tag parameter calculates and sets an automatic tag value for the route.
NOTE
This parameter applies only to routes redistributed into OSPF.
The comm-list parameter deletes a community from a BGP4 route community attributes field.
The community parameter sets the community attribute for the route to the number or well-known
type you specify.
The dampening [ ] parameter sets route
dampening parameters for the route. The parameter specifies the number of minutes
after which the route penalty becomes half its value. The parameter specifies how low a
route penalty must become before the route becomes eligible for use again after being
suppressed. The parameter specifies how high a route penalty can become before the
Layer 3 Switch suppresses the route. The parameter specifies the maximum
number of minutes that a route can be suppressed regardless of how unstable it is. For information
and examples, refer to
“Configuring route flap dampening” on page 722.
TurboIron(config)#ip community-list standard std_2 permit 23:45 56:78
TurboIron(config)#route-map bgp3 permit 1
TurboIron(config-routemap bgp3)#match community std_1 std_2 exact-match