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Description
553-3001-202 Standard 1.00 April 2000
does not matter for this route. If the route and ToS do not match any of the
other route entries, the packet is routed here. The entry is configured for the
T-LAN interface.
Local subnet packets is the H.323 call data intended for another ITG node
connected to the same subnet. This can be the immediate subnet. For traffic
to be sent on the local subnet, the routing table entry for the T-LAN port must
be selected. Each table entry (except the default route) has a ToS value
configured against it. Since there are two ToS values configured (one for
control data and one for voice data), there must be two route entries for the
local subnet in the table.
If both table entries are not present, a condition occurs where packets for
voice, control, or both can be sent to the default route because the ToS does
not match the local subnet entry. These packets go to the router and then back
on the subnet, wasting router resources and increasing traffic on the subnet.
The ITG ISL Trunk card configures two route table entries for the local
subnet if a different ToS is configured for the voice and control packets.
Otherwise a single entry is created.
CAUTION
You must have detailed knowledge of router capabilities before you
change ToS. Improper changes to ToS can degrade network
performance.