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Chapter 7
BGP's Basic Components
Table 7.7 lists the Error Subcode field's error codes for OPEN message
errors.
Table 7.8 lists the Error Subcode field's error codes for UPDATE message
errors.
T A B L E 7 . 7
Error Subcodes for OPEN Message Errors
Code
Number
Type
1
Unsupported version number
2
Bad peer AS information passed
3
Bad BGP Identifier field
4
Unsupported optional parameter
5
Authentication failure
6
Unexcepted Hold Time value
T A B L E 7 . 8
Error Subcodes for UPDATE Message Errors
Code
Number
Type
1
Error parsing the Path Attributes field
2
Unrecognized well-known path attribute
3
Missing required well-known attribute
4
Attribute flag field not understood
5
Attribute length mismatch or not understood
6
An invalid ORIGIN attribute
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