Introduction
Some time it requires creating multiple outbound dial-peers for the same destination-pattern such as in a multi-cluster (various Subscribers) environment.
CUBE 10.0.0 [IOS 15.4(2)T / IOS-XE 3.12] introduces the concept of Destination Server Group, which supports multiple session targets (up to 5) to be defined in a group and applied to a single outbound dial-peer. This reduces the need to configure multiple dial-peers with the same capabilities and destination-patterns but different destination target IP Addresses.
Multiple outbound dial-peers are defined when an incoming call is required to hunt through different destinations. Each destination requires a separate outbound dial-peer setup even if the same call capability setup is used.
Destination server group supports multiple destinations that can be defined in a new “voice class server-group <tag>” setup.
A sip dial-peer can reference the server-group by a new “session server-group <tag>” command line.
The destinations of a server-group will then be used for outgoing call setup when a SIP dial-peer with server-group is selected as an outbound dial-peer.
Destination Server Group
Supports multiple destinations (session targets) be defined in a group and applied to a single outbound dial-peer
Once an outbound dial-peer is selected to route an outgoing call, multiple destinations within a server group will be sorted in either round robin or preference [default] order
This reduces the need to configure multiple dial-peers with the same capabilities but different destinations. E.g. Multiple subscribers in a cluster
Once an outbound dial-peer is selected to route an outgoing call, multiple destinations within a server group will be sorted in either round robin or preference [default] order.
Configuration Example
voice class server-group 1
hunt-scheme {preference | round-robin}
ipv4 1.1.1.1 preference 5
ipv4 2.2.2.2
ipv4 3.3.3.3 port 3333 preference 3
ipv6 2010:AB8:0:2::1 port 2323 preference 3
ipv6 2010:AB8:0:2::2 port 2222
dial-peer voice 100 voip
description Outbound DP
destination-pattern 1234
session protocol sipv2
codec g711ulaw
dtmf-relay rtp-nte
session server-group 1
Verify
show voice class server-group 1
