Network Time Acquiring Protocols; Ip Multicast Filtering; Congestion Control; Backup Power Supply - Avaya P334T-ML User Manual

Chapter 1 Overview
to valuable means that a link fault trap can be sent even when the port is disabled.
This feature is particularly useful for the link/intermodule redundancy application,
where you need to be informed about a link failure on the dormant port.

Network Time Acquiring Protocols

The P334T-ML supports the SNTP Protocol (RFC 958) over UDP port 123. You can
choose between SNTP or TIME protocol over UDP port 37.

IP Multicast Filtering

IP Multicast allows you to send a single copy of an IP packet to multiple
destinations, and can be used for various applications including video streaming
and video conferencing.
On LANs, IP Multicast packets are transmitted in MAC Multicast frames.
Traditional LAN switches flood these Multicast packets to all stations in the VLAN.
Multicast filtering functions may be added to the Layer 2 switches to avoid sending
Multicast packets where they are not required. Layer 2 switches capable of
Multicast filtering send the Multicast packets only to ports that connect members of
that Multicast group. In order for this feature to operate correctly, you need in your
network a router issuing IGMP queries.
Note: IP Multicast filtering will function only based on the port's VLAN ID and not
based on any VLAN bound to the port.

Congestion Control

Congestion control is a key element of maintaining network efficiency as it prevents
resource overload.
The P334T-ML supports congestion control on all Ethernet ports, using IEEE 802.3x
Flow Control in full duplex mode.

Backup Power Supply

Each P334T-ML module comes with a Backup Power Supply (BUPS) connector. If
the internal power supply fails, the BUPS-ML (available separately) automatically
supplies power to the switch for uninterrupted operation.
Note: The BUPS-ML used with
other P330 products
6
-ML units is different from the BUPS used with
P334T
P334T-ML User's Guide