Suggestions For Installation And Configuration; Reliability And Performance - Avaya 4600 Series Administrator's Manual

Overview of Voice over IP (VoIP) and Network Protocols

Suggestions for Installation and Configuration

Reliability and Performance

There is a cost/performance trade-off associated with Voice over IP. Greater reliability and
improved performance can be obtained through server redundancy and components with
higher bandwidth capabilities.
The reliability and performance of the traditional PBX systems are very high to date. Much of
the LAN is outside the PBX's control. However, consider the points in the next paragraph to
enhance the reliability and performance of the IP telephone network.
All 4600 Series IP Telephones support the tools "ping" and "traceroute." These are standard
LAN/WAN tools to identify:
whether two points on a network can communicate with each other, and
●
what path a sample communication takes as it traverses the network from one point to the
●
other.
As of R2.6, the telephone will not respond to a traceroute if Internet Control Message Protocol
Destination Unreachable transmission (ICMPDU) has been set to zero.
All 4600 Series IP Telephones respond appropriately to a ping or a traceroute message sent
from the Communication Manager or any other source on your network. These telephones will
not, in general, initiate a ping or traceroute. Release 1.6 of the 4600 Series IP Telephones
supporting H.323 introduced "remote ping" and "remote traceroute" support. The switch can
instruct such a 4600 Series IP Telephone to initiate a ping or a traceroute to a specified IP
Address. The telephone carries out that instruction and sends a message to the switch
indicating the results. See your Communication Manager Administration documentation for
more details.
As of Release 1.8, if applicable, 4600 Series IP Telephones test whether the network Ethernet
switch port supports IEEE 802.1D/q tagged frames by ARPing the router with a tagged frame.
See VLAN Considerations
your router must respond to ARPs for VLAN tagging to work properly.
44 4600 Series IP Telephone LAN Administrator Guide
on page 91. If your LAN environment includes Virtual LANs (VLANs),