Specifications

30 AT-8800 Series Switch
C613-03066-00 REV D
GBIC 1000BASE-T Auto-Negotiation
1000BASE-T GBICs support only 1000 Mbps full duplex connections. Although
1000BASE-T GBICs will participate in auto-negotiation processes, they will
only advertise 1000 Mbps. Half duplex, 10BASE-T, and 100BASE-TX modes are
not supported.
While 1000BASE-T GBICs will auto-negotiate at the copper Ethernet level, the
ports will behave as if in fixed 1000 Mbps full duplex mode. This is because the
SERDES connection used by GBIC ports makes the auto-negotiation invisible
to the switch, and so prevents a successful link negotiation.
When a 1000BASE-T GBIC is inserted into a GBIC slot, the port’s auto-
negotiation capability is disabled. This means that the port speed may not be
set to "auto-negotiate". If the port had been configured to auto-negotiate (by
default or by command) prior to the GBIC’s insertion, then this configuration is
overridden for as long as the GBIC remains in place.
Dual In-line Memory Modules (DIMMs)
Synchronous DRAM for AT-8800 Series switches is provided by a single
DIMM. Three memory sizes are supported; 64 MBytes, 128 MBytes and 256
MBytes.
Only Allied Telesyn supplied DIMMS have been tested and approved for use
with AT-8800 Series switches. Using DIMM that has not been approved may
cause unreliable operation and will invalidate the switch’s warranty.
To check how much DIMM is installed, enter
SHOW SYSTEM
For AT-8800 Series switches, DIMMs should only be installed by authorised
service personnel. Unauthorised opening of the switch’s lid may cause danger
of injury from electric shock, damage to the switch, and invalidation of the
product warranty.
Contacting Us
With locations covering all of the established markets in North America, Latin
America and Europe, Allied Telesyn provides localized sales and technical
support worldwide. To find our representative nearest you, visit Allied Telesyn
on the web at: http://www.alliedtelesyn.com
.