Multi-connect duplex configuration

The Ethernet connections for a duplex Avaya S8700 Media Server for Multi-connect Configuration are described below.

1. Administration PC. The administrator typically accesses the S8700 servers over the corporate LAN.
2. Corporate LAN. The topology for the local area network varies significantly.
3. Corporate LAN interface: default Ethernet 4. The server's Ethernet link to the local area network, used for administration and (optionally) SNMP alarm notification.
4. The Ethernet connection to the corporate LAN is a "shared" or non-dedicated network. IP addresses for the various S8700 components must be administered with extreme care to prevent conflicts with other equipment that shares the LAN. In the default multi-connect configuration, all other Ethernet connections are "private", operating on their own closed LANs.
5. Avaya S8700 Media Server. The server does system initialization and recovery, provides access to the telephony application software, and handles alarming for hardware and software components. Two are always present, one in active mode and the other on standby.
6. Duplication interface: default Ethernet 2. The dedicated, direct Ethernet connection between the two required Avaya media servers, used to monitor and exchange the state of health of each server.
7. Services interface: default Ethernet 1. The server's dedicated Ethernet connection to a laptop.
8. Network control A interface: default Ethernet 0. The server's Ethernet connection to 1 or 2 Ethernet switches (two switches may be needed to support a large number of port networks). This private LAN carries the control signals for the port networks.
9. Ethernet switch. At least one is always required to support the S8700 media server's control network. If many port networks are present, two Ethernet switches may be daisy-chained together to provide sufficient Ethernet connections to the IPSI boards in the port networks.
10. UPS. An uninterruptible power supply keeps the S8700 system functional through brief power outages. One UPS is required per server.
11. Port network (PN). Provides the telecommunications functions of the S8700 system. The port network configuration can vary significantly from site to site (see Multi-connect configurations in the configuration overview).
12. IPSI. The Internet Protocol Server Interface (IPSI) circuit pack carries the control network signals to the other boards in the port network.