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ip-option
ip-option ip-option-value [ip-option-mask]
Syntax
no ip-option
config>filter>ip-filter>entry>match
Context
This command configures matching packets with a specific IP option or a range of IP options in the
Description
first option of the IP header as an IP filter match criterion.
The option-type octet contains 3 fields:
The no form of the command removes the match criterion.
none
Default
ip-option-value — Enter the 8 bit option-type as a decimal integer. The mask is applied as an AND to
Parameters
ip-option-mask — This is optional and may be used when specifying a range of option numbers to use
multiple-option
multiple-option {true | false}
Syntax
no multiple-option
config>filter>ip-filter>entry>match
Context
7450 ESS OS Router Configuration Guide
1 bit copied flag (copy options in all fragments)
2 bits option class
5 bits option number
the option byte, the result is compared with the option-value.
The decimal value entered for the match should be a combined value of the eight bit option type
field and not just the option number. Thus to match on IP packets that contain the Router Alert
option (option number = 20), enter the option type of 148 (10010100).
0 — 255
Values
as the match criteria.
This 8 bit mask can be configured using the following formats:
Format Style
Decimal
Hexadecimal
Binary
Default
255 (decimal) (exact match)
1 — 255 (decimal)
Values
Format Syntax
DDD
0xHH
0bBBBBBBBB
Filter Policies
Example
20
0x14
0b0010100
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