Avaya 580 - Manual (Page 344)

12-16 User Guide for the Avaya P580 and P882 Multiservice Switches, v6.1
Chapter 12
If the forwarding cache contains a high number of short-lived protocol
entries, you can set the switch to use the slow path to route packets of a
specific short-lived protocol. By using the slow path to route short-lived
protocol traffic, you conserve the resources of the forwarding engines,
which provide the fast in band routing engine (FIRE) and fast out of band
routing engine (FORE). For information about the slow path and FIRE and
FORE paths, see “
Routing Overview ” in Chapter 1 , “ Introduction .”
To configure short-lived protocol filters, your user account must be assigned
one of the following access types:
■
Read-write
■
Administrator
■
Custom access type that has read-write permission for the routing
feature
You can configure short-lived IP protocol filters only by using the CLI. This
feature is not available in the Web Agent or SNMP.
This section contains procedures for the following tasks:
■
Enabling a Short-Lived IP Protocol Filter
■
Disabling a Short-Lived IP Protocol Filter
■
Displaying Short-Lived IP Protocol Filters
Enabling a Short-Lived IP Protocol Filter
Overview If you enable a filter for a short-lived IP protocol, the switch uses the slow
path to route packets of the protocol. For information about the slow path,
see “
Routing Overview ” in Chapter 1 , “ Introduction .”
By default a filter is enabled for DNS and NTP packets. To route the
packets of other short-lived protocols by means of the slow path, you must
enable a filter for the protocol.
CLI Command To enable a filter for a short-lived IP protocol, enter Global Configuration
mode and use the following command:
(configure)# ip short-lived {tcp | udp}