IP Network Services
Polycom®, Inc. 395
LAN Redundancy
LAN Redundancy enables the redundant LAN port connection to automatically replace the failed port by
using another physical connection and NIC (Network Interface Card). When a LAN port fails, IP network
traffic failure is averted and network or endpoints disconnections do not occur. When LAN cables are
connected to both LAN 2 and LAN 3 ports, the Collaboration Server automatically selects which port is
active and which is redundant.

Configuration Requirements

LAN Redundancy is available by default and is enabled by connecting the additional LAN cable to LAN 3,
or LAN 4.

Signaling and Media Redundancy

On the RealPresence Collaboration Server 800s, LAN2 is used for media and signaling and LAN 3, and
LAN 4 are the redundant media ports:
SIP-TLS 60002 TCP Required for Binary Floor Control
Protocol (BFCP) functionality for
SIP People+Content content
sharing.
No - port is not opened
if SIP People+Content
is disabled.
RTP 49152 - 59999 UDP RTP media packets.
The ports are dynamically
allocated.
Yes - It is configured in
the Fixed Ports section
of the IP service.
RTCP 49152 - 59999 UDP RTP control.
The ports are dynamically
allocated.
Yes - It is configured in
the Fixed Ports section
of the IP service.
SIP -TLS 5061 TCP SIP -TLS for SIP server, alternate
SIP server, outbound proxy and
alternate outbound proxy.
No
LAN Redundancy is applicable to the RealPresence Collaboration Server 800s only.
Connection
Type Port Number Protocol Description Configurable