DXS-3600 Series Layer 3 Managed 10Gigabit Ethernet Switch CLI Reference Guide
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The extended community attribute is used for implementing policy routing. It is an optional, transitive
attribute and facilitates transfer of local policies through different autonomous systems. All the names of
the standard
extcommunity
list and expended
extcommunity
list must not be the same.
This command can be applied multiple times. BGP extended community attributes exchanged between
BGP peers are controlled by the neighbor send-community command.
If permit rules exist in an extended community list, routes with extended community that does not match
any rule in the list will be denied. If there are no rules or only deny rules to be configured in the extended
community list, all routes will be denied.
Example
This example shows how to define a standard extended community list named “myecom” with an entry.
Switch# configure terminal
Switch(config)# ip extcommunity-list standard myecom permit rt 1:1 soo 1.1.1.1:1
This example shows how to create an expanded extended community list named “myexpcom” with an
entry.
Switch# configure terminal
Switch(config# ip extcommunity-list expanded myexpcom permit _20[0-9]
11-32
match as-path
This command is used to define a BGP AS-path access list match condition in a route map rule. To delete
a match statement, use the
no
form of this command.
match as-path ACCESS-LIST-NAME
no match as-path
Parameters
ACCESS-LIST-NAME
Specifies an AS path access list name.
Default
No match statements in the route map.
Command Mode
Route-map Configuration Mode.
Command Default Level
Level: 12.
Usage Guideline
A route map can contain multiple route map entries, which is either a permit entry or a deny entry. When
a route is checked against a route map, the entry in the route map will be checked whether match the
route based on its sequence number in the route map. If an entry is found matched, the action associated
with the entry will be taken and no further check will be done against the remaining entry in the route map.
A route map entry can contain multiple match and set statements. To match a route against a route map
entry, all of the match statements in the route map rule must be satisfied. When a route map entry is
matched, all the set statements in the rule will be performed.
Use the
match as-path
command to match an access list in a route map entry. To match a route map
entry, all match statements must be satisfied. To match an AS path access list, if an entry in the access
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