Overview
This feature configures a server group (group of server addresses) that can be referenced from an outbound dial peer.
Server groups allow you to create simpler configurations by specifying a list of destination SIP servers for a single dial peer. When a call matches a dial peer that is configured with a server group, the destination is selected from the list of candidates based on a configured preference in the server group. If it is not possible to complete that call, the next candidate is selected. Alternatively, you can also choose to stop hunting through the group if a specified response code is received. If the call cannot be placed to any of the servers in the group, or hunting is stopped, call processing continues to the next preferred dial-peer.
You can configure server groups for SIP dial peers to include up to five IPv4 or IPv6 target server addresses listed in strict order of preference, or with equal weight for round robin or random selection. If a server-group is in the shutdown mode, all dial-peers using this destination are out of service.
Note |
Whenever destination server group is used, and multiple interfaces are involved, ensure that all servers in a group are reachable through the network to which the associated dial-peer is bound. If there are session targets of different network, then different dial-peers must be created with appropriate grouping of the targets with respective binding of the interfaces. |
Note |
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Caution |
Huntstop is not allowed for the following set of cause codes 401, 407, 415, 417, 422, 480, 485, 486, and 488.
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Note |
Load Balancing for DNS SRV Hosts can be used as an alternative to Server Groups. |
Feature Information for Configuring Server Groups in Outbound Dial Peers
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Feature Name |
Releases |
Feature Information |
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Server Groups in Outbound Dial Peers |
Cisco IOS XE Release 3.11S 15.4(1)T |
This feature configures server groups (groups of IPv4 and IPv6 addresses) which can be referenced from an outbound SIP dial peer. The following command is introduced under: voice class server-group , description , ipv4 port preference , ipv6 port preference , hunt-scheme , show voice class server-group , shutdown (Server Group) . |
Hunt Stop for Server Groups |
Cisco IOS XE Bengaluru 17.4.1a |
This feature allows you to configure hunt-stop based on (configurable) response codes in the Server Group. The following command is introduced under voice class server-group. huntstop rule-tag resp-code from_resp_code to to_resp_code |