System information

Integrating Polycom® HDX® Systems with UNIFY® OpenScape®
Polycom, Inc. 32
» IPv4 You can specify IPv4 DNS server addresses only when the IPv4 address is entered
manually. When the IPv4 address is obtained automatically, the DNS Server addresses are
also obtained automatically.
○ LAN Speed Specify the LAN speed to use. Note that the speed you choose must be
supported by the switch. You can choose from the following options:
» Choose Auto to have the network switch negotiate the speed automatically. Choosing Auto
automatically sets Duplex Mode to Auto.
» If you choose 10 Mbps, 100 Mbps, or 1000 Mbps you must set Duplex Mode to Half or
Full.
Note: LAN Speed Settings for the Polycom HDX and Switch Must be The Same.
Polycom does not support Auto for the Polycom HDX system only or the switch only; the
settings for both must be the same.
○ Duplex Mode Specify the duplex mode to use. Note that the Duplex mode you choose must
be supported by the switch. Choose one of the following options:
» Choose Auto to have the network switch automatically negotiate the Duplex mode. Choosing
Auto automatically sets the LAN Speed field to Auto. The duplex settings for both the
Polycom HDX system and the switch must be the same. Polycom recommends that you set
both to Auto.
» Half Duplex Half Duplex provides communication in both directions, but only one direction
at a time (not simultaneously).
» Full Duplex Full Duplex allows communication in both directions simultaneously.
○ Ignore Redirect Messages Enables the HDX system to ignore redirect messages from
network routers. A redirect message tells the endpoint to use a different router than the one it is
using.
○ ICMP Transmission Rate Limit (millisec) Specifies the minimum number of milliseconds
between transmitted packets. Enter a number between 0 and 60000. The default value of 1000
signifies that the system sends 1 packet per second. If you enter 0, the transmission rate limit is
disabled. This setting applies only to error ICMP packets. This setting has no effect on
informational ICMP packets, such as echo requests and replies.
○ Generate Destination Unreachable Messages Generates a Destination Unreachable
message if a packet cannot be delivered to its destination for reasons other than network
congestion.
○ Respond to Broadcast and Multicast Echo Requests Sends an Echo Reply message in
response to a broadcast or multicast Echo Request, which is not specifically addressed to the
HDX system.
○ IPv6 DAD Transmit Count Choose to send 1, 2, or 3 Duplicate Address Detection (DAD)
messages before acquiring an IPv6 address. The HDX system sends DAD messages to
determine if the address it is requesting is already in use.