680CHAPTER 21: APPLETALK

appletalk checksum

3500

9000

9400

For CoreBuilder 9000: Applies to Layer 3 switching modules only.

Enables Data Delivery Protocol (DDP) checksum error detection for the AppleTalk protocol.

Valid Minimum Abbreviation

ap c

3900

9300

Important Considerations

 

 

 

 

The AppleTalk protocol uses checksums to detect errors in data

 

transmissions. A checksum totals all data bytes and adds the sum to

 

the checksum field of the data packet. The receiving station computes

 

a verification checksum from the incoming data and compares the

 

new checksum with the value that is sent with the data. If the values

 

do not match, the transmission contains an error.

 

 

Disabled is the preferred setting. Enabling the checksum generation

 

or verification significantly impacts the router’s performance.

 

Options

 

 

 

 

 

 

 

 

 

 

Prompt

Description

Possible Values

[Default]

 

 

 

 

 

 

 

Checksum

Whether to enable or disable

enabled

disabled

 

generation

generation of checksums for

disabled

(factory

 

state

AppleTalk packets

default), or

 

 

 

 

 

 

 

 

current value

 

Checksum

Whether to enable or disable

enabled

disabled

 

verification

verification of checksums for

disabled

(factory

 

state

AppleTalk packets

default), or

 

 

 

current value

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3Com 3500 manual Appletalk checksum, AppleTalk protocol uses checksums to detect errors in data