Configure The Tlan Subnet Ip Router - Nortel 1000 Description, Installation And Operation Manual

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Configure the TLAN subnet IP router

553-3001-363 Standard 2.00
ITG engineering guidelines
The TLAN subnet must connect to a 10/100BaseT switch. The uplink from
the TLAN subnet to the router should be at least 100 Mbps. If the uplink is
100 Mbps, then the maximum number of IP trunk cards allowed on the switch
is subject to the limits described in "Calculate Ethernet and WAN bandwidth
usage" on page 150.
Consider implementing LAN resiliency. This can involve installing
redundant up-links, backup routers and an Uninterruptible Power Source
(UPS).
Shared media hubs are not supported. Use Layer 2 switches.
Place the IP Trunk 3.01 (and later) node and the TLAN subnet router as close
to the WAN backbone as possible. This is to minimize the number of router
hops, segregate constant bit-rate VoIP traffic from bursty LAN traffic and
simplify the end-to-end QoS engineering for packet delay, jitter, and packet
loss. If an access router separates the IP Trunk 3.01 (and later) node from the
WAN router, there should be a high-speed link, such as Fast Ethernet, FDDI,
SONET, OC-3c, ATM STS-3c, between the access router and the WAN
backbone router.
The IP Trunk 3.01 (and later) node must be placed on its own TLAN subnet.
The router should have a separate 10/100BaseT interface for the TLAN
subnet and should not contain any other traffic. Other IP devices should not
be placed on the TLAN subnet.
September 2004
IMPORTANT!