Nortel Networks NN43001-563 - Manual (Page 246)

246 Install and configure IP Trunk 3.01 (and later) node
Change default DiffServ/ToS value for Control and Voice
Follow the steps in Procedure 21 "Changing the default DiffServ Codepoint
(DSCP) value for Control and Voice" (page 246) to change the default
DiffServ/ToS value for Control and Voice.
Procedure 21
Changing the default DiffServ Codepoint (DSCP) value for Control and Voice
Step Action
1 Enter the DSCP value for Control packets and Voice packets, if
required, to obtain better QoS over the IP data network (LAN/WAN).
Do not change from default value of 0 unless instructed by IP
network administrator.
The DSCP determines the priority of the control and voice
packets in the network router queues. The values entered in
these two boxes must be coordinated across the entire IP data
network. Do not change them arbitrarily.
DSCP values must first be converted to a decimal value of the
DiffServ/TOS byte in the IP packet header. For example, the
8-bit TOS field value of 0010 0100 which indicates "Precedence
= Priority"; "Reliability = High" is converted to a decimal value of
36 before being entered in the Control or Voice fields.
2 Click Apply.
—End—
Configure SNMP Traps/Routing and IP addresses tab
In this procedure, a maximum of eight SNMP Trap destination IP addresses
and subnet masks and a maximum of eight Card Routing Table Entry IP
addresses and subnet masks can be defined. These SNMP Trap and Card
Routing table settings become active when the IP trunk card properties
are transmitted to the IP trunk cards.
The IP trunk card assumes that the SNMP traps are sent through the ELAN
subnet, since there is no SNMP Gateway address configured in TM 3.1. If
the SNMP traps are to be sent through the ELAN subnet, then there will be
no problem However, if the TM 3.1 workstation is on the TLAN subnet,
SNMP traps might not reach the TM 3.1 PC. This is because the provisioned
subnet of the SNMP client, based on the IP address and subnet mask,
defaults the traps to be sent to the ELAN router. The only way SNMP traps
can be sent to the TLAN subnet is if the SNMP client subnet is the same
as the IP trunk card TLAN subnet.
Example:
SNMP IP = 23.11.42.52
Nortel Communication Server 1000
IP Trunk Fundamentals
NN43001-563 01.01 Standard
Release 5.0 30 May 2007
Copyright © 2007, Nortel Networks
.