Avaya Configuring Data Compression Services Manual de usuario descargar pdf (Pagina 42)

Configuring Data Compression Services

3-4 114061 Rev. A

You can mix 8 KB and 32 KB contexts on either board. Be aware that if you are

bringing VCs up and down, memory may fragment. Even though you have 32 or

more KB of compression memory available, if it is on different pages you will not

be able to conﬁgure a 32 KB context. To solve this problem, you must save your

conﬁguration and reset the slot. When you reset the slot, available compression

memory is rearranged to be contiguous.

If you have memory available, you are always able to add an 8 KB context,

because 8 KB is the smallest divisible amount of compression memory.

Preventing Data Loss for Frame Relay and PPP

Buffer size is the amount of memory allocated to keep the transmission history.

You must conﬁgure this parameter to protect against data loss if you run Frame

Relay or PPP. You can use a buffer size of None, Normal, Large, or Very Large.

The default value is Normal. Conﬁgure buffer space based on the following

conditions:

• Length of time it takes for data to travel over the link.

A Normal buffer size usually sufﬁces for a coast-to-coast connection within

the United States. You may need a Large or Very Large buffer if your link is

over a satellite connection.

• Number of dropped packets.

Increase the buffer size on a link with a large number of dropped packets.

Decrease the buffer size, even to None, to conserve memory on a link with a

very small number of dropped packets.

Table 3-2. Hardware Compression -- 32 KB Contexts

Max 32 KB CPC

Contexts

Available 8 KB

CPC Contexts

Reserved 8 KB PPC

Context

32 Context Board 73 1

128 Context Board 31 3 1

Site Manager

: History Size parameter: page A-3 (line); page A-7 (circuit interface)

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 53 54

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Avaya Configuring Data Compression Services Manual de usuario Pagina 42