D-Link DGS-3630-52PC Emulator 1 - Page 213

DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide Usage Guideline The community attribute is used for implementing policy routing. It is an optional, transitive attribute and facilitates transfer of local policies through different autonomous systems. A community attribute is represented by a 32 bits integer. If no community value is associated with a path, by default, the Internet community is associated with the path. A community list can contain multiple rule entries, either as a deny entry or a permit entry. Use the command to define a community list rule entry. A community list can be either a standard community list or an expanded community list. The rule entry defined in a standard community list contains a string formed by a number of communities, separated by space. The rule entry defined in an expanded community list contains a regular expression. Use the match community command to match a community list in a route map entry definition. To match a route map entry, all match statements must be satisfied. To match a community list, if an entry in the community list matches the route, no further check will be done against the remaining entries in the access list. If the matched entry is a permit entry, the community list is matched. If the matched entry is a deny entry, the community list is not matched. If none of the rule entries in the community list match the route, the community list is not matched. Example This example shows how to configure a rule entry for a community list "mycommlist" that permits routes that from network 10 in autonomous system 50000. Switch# configure terminal Switch(config)# ip community-list standard mycommlist permit 50000:10 Switch(config)# 13-39 ip extcommunity-list (MI Mode Only) This command is used to add an extended community entry for VPN route filtering. Use the no form of this command to delete the extended community list entry. ip extcommunity-list standard EXTCOMMUNITY-LIST-NAME {permit | deny} EXTCOMMUNITY no ip extcommunity-list standard EXTCOMMUNITY-LIST-NAME ip extcommunity-list expanded EXTCOMMUNITY-LIST-NAME {permit | deny} REGEXP no ip extcommunity-list expanded EXTCOMMUNITY-LIST-NAME Parameters EXTCOMMUNITY-LISTNAME permit deny EXTCOMMUNITY REGEXP Specifies the extended community list name. The maximum length is 16 bytes. The syntax is general string that does not allow spaces. Specifies the extended community to accept. Specifies the extended community to reject. Specifies the EXT-COMMUNITY. This consists of an RT value or a Site-of-Origin (SoO) value. It can accept 12 values for one entry. There are two different types for the RT value or SoO value: IP address: number - The IP address should be a global IP address that is assigned to the user and the number is assigned from a numbering space that is administered by the user. The number can be 1-65535. AS Number: number - The AS Number should be a public AS Number (Both 2bytes AS number and 4-bytes AS number works) that is assigned to the user and the number is assigned from a numbering space that is administered by the user. The number can be 1 to 65535 for 2-bytes AS number and 1 to 4294967295 for 4bytes AS number. Specifies to configure a regular expression that is used to specify a pattern to match against an input string. Regular expressions can be used only with expanded community lists. The maximum length is 80 characters. 208