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What is fast mem (75xx router), What is it used for?

admin_2
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Level 3

What is fast mem used for on 7500 router?

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Not applicable

SRAM, Synchronous RAM is just that--Fast memory. It can be used for

almost anything. It could be used for packet memory on the RSP. If it

is used for packet memory on the RSP, with direct access to it from the

CyBus, that packet memory structure is called, in cisco parlance, "MEMD".

It is a shared memory structure to hold packets as they get

moved/switched/routed between Interface Processors. All packets that

get "pushed" out of an Interface Processor across the CY bus, get

"pushed" into MEMD, first.

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