Avaya P333R, Руководство пользователя

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Chapter 1 Overview
4 Avaya P333R User’s Guide
Port Classification
With the Avaya P330, you can classify any port as regular or valuable. Setting a port
to valuable means that a link fault trap can be sent even when the port is disabled.
This feature is particularly useful for the software redundancy application, where
you need to be informed about a link failure on the dormant port.
Network TIME Acquiring Protocols
The P330 supports the SNTP Protocol over UDP port 123. You can choose between
SNTP or TIME protocol over UDP port 37.
MAC Security
You can define a port as secure, to prevent it from learning new mac addresses. If an
unknown MAC or station tries to access a secure port, the intruder request is sent to
the management station.
Link Aggregation Group (LAG)
LAG provides increased bandwidth and redundancy for critical high-bandwidth
applications such as inter-stack links and connections to servers. You can aggregate
the bandwidth of up to eight 10/100Base-Tx ports, two 100Base-FX or 1000Base-X
ports.
Load sharing ensures that if one of the port connections fails, the other connections
will assume the load seamlessly. Load balancing guarantees that the traffic load at
any level will be evenly divided among all the LAG links.
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.