PM3350 Просмотр технического описания (PDF) - PMC-Sierra

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PM3350

8 PORT ETHERNET SWITCH

PMC-Sierra 

ELAN 8X10

DATA SHEET

PMC-970109

ISSUE 3

PM3350 ELAN 8 X10

8 PORT ETHERNET SWITCH

Spanning tree bridging capabilities

The ELAN 8x10 optionally implements the 802.1d spanning tree protocol, allowing it to

interoperate with IEEE-standard transparent bridges. The spanning tree protocol is

supported by the on-chip Switch Processor unit, and does not require an external CPU

for implementation.

Management and monitoring support

The ELAN 8x10 maintains full RMON port and host statistics for all ports and all learned

MAC addresses at wire rates. These statistics may be retrieved either in-band (via

SNMP agent) or out-of-band (via the expansion bus).

The ELAN 8x10 implements an optional on-chip SNMP agent on top of an integral

UDP/IP protocol stack, supporting SNMP and the RFC1493 bridge MIB. When multiple

ELAN 8x10 chips are present in a system, they may be configured to intercommunicate

and create a distributed MIB in a transparent manner. Alternatively, the system vendor

may elect to disable the SNMP agent and access the ELAN 8x10 statistics and

configuration variables directly from the expansion port.

Status codes may be displayed on a set of LEDs (Light Emitting Diodes) during self-test

and operation at the system implementer's discretion. These status codes are output to

a register mapped into the ELAN 8x10 memory data bus at a specific address location.

Device failure during self-test, or specific operating conditions, may be displayed using

front-panel LEDs connected to the register.

Autoconfiguration via Local PROM/EEPROM

The ELAN 8x10 will automatically self-configure upon power-up using user-defined

parameters supplied in an external EPROM or EEPROM. The EPROM/ EEPROM may

be connected to the memory bus and mapped to any address range; the ELAN 8x10

will automatically locate the EPROM or EEPROM and load the configuration

parameters from it. The ELAN 8x10 also contains hardware that enables it to write to

standard 3.3-volt EEPROM devices, thus permitting configuration information to be

changed dynamically.

PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND PMC-SIERRA, INC. CUSTOMERS ONLY

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