Expansion options, Dual in-line memory modules (dimms), Installing dimm – Allied Telesis SwitchBlade 4000 Series Switch Hardware Reference User Manual
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SwitchBlade 4000 Series Switch
C613-03060-00 REV H
Switch Controller Card CAM
The switch controller card (SB4211) contains two CAM processor chips. Each
chip contains 8 k entries of content addressable memory (CAM). These entries
contain address locations for the forwarding database of L2/3 addresses and
other similar entries such as VLAN identities. Located alongside each
processor chip are 3 CAM chips that together provide an additional 96 k
entries. Each processor chipset therefore, contains a total of 104 k entries of on-
card CAM.
Line Card CAM
Each line card comes with a basic 40 k entries of CAM per switch processor
chip. These entries contain address locations for the forwarding database of
L2/3 addresses and other similar entries such as VLAN identities. Each switch
chip contains 8 k entries of content addressable memory (CAM). Located
alongside each switch chip is a CAM chip that provides an additional 32 k of
CAM entries, thus producing a total of 40 k entries per on-card chipset.
Refer to the card descriptions shown in the “Physical and Operating
Specifications” on page 15 for more information on the above line cards.
Expansion Options
This section provides a brief overview of the expansion options for the
SwitchBlade. Contact your authorised Allied Telesis distributer or reseller for
more information on these products, or visit our Web site at,
.
Dual In-line Memory Modules (DIMMs)
RAM for SwitchBlade switch controllers is provided in the form of two 128
MByte DIMMs. The two DIMMs deliver 256 MBytes of Synchronous DRAM.
To minimise the risk of damage during shipment, DIMMs are not installed on
switch controllers at the factory. Instead, the two 128 MByte DIMMs are
included in a CPU memory pack, which ships with each switch controller.
Installing DIMM
AT-SB4211 switch controllers have two DIMM slots. Both of these slots must be
populated with a 128 MByte DIMM before the switch controller can be used.
Only Allied Telesis supplied DIMMS have been tested and approved for use
with SwitchBlade switch controllers. Using DIMM that has not been approved
may cause unreliable operation and will invalidate the switch controller’s
warranty.
To install a DIMM
1.
Prepare the switch controller.