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Configuring a routing policy, Configuring an extended community list, Configuration prerequisites – H3C Technologies H3C S12500-X Series Switches User Manual

Page 385: Creating a routing policy

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371

Step Command

Remarks

2.

Configure a community
list.

Configure a basic community list:
ip community-list { basic-comm-list-num | basic

basic-comm-list-name } { deny | permit }

[ community-number&<1-32> | aa:nn&<1-32> ]
[ internet | no-advertise | no-export |

no-export-subconfed ] *

Configure an advanced community list:

ip community-list { adv-comm-list-num | advanced

adv-comm-list-name } { deny | permit }

regular-expression

Use either method.
By default, no
community list is

configured.

437B

Configuring an extended community list

You can configure multiple items for an extended community list that is identified by a number. The

relationship between items is logic OR. A route that matches one item matches the extended community
list.
To configure an extended community list:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Configure an extended
community list.

ip extcommunity-list ext-comm-list-number { deny |
permit } { rt route-target }&<1-32>

By default, no extended
community list is

configured.

129B

Configuring a routing policy

438B

Configuration prerequisites

Configure filters and routing protocols, and determine the routing policy name, node numbers, match

criteria, and the attributes to be modified.

439B

Creating a routing policy

For a routing policy that has more than one node, configure at least one permit-mode node. A route that

does not match any node cannot pass the routing policy. If all the nodes are in deny mode, no routing
information can pass the routing policy.
To create a routing policy:

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Create a routing policy and a node, and

enter routing policy node view.

route-policy

route-policy-name { deny |
permit } node node-number

By default, no routing policy
is created.

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