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NetStructure™ 480T Routing Switch User Guide
can be used when you wish to match only against the subnet
address, and ignore all addresses within the subnet.
If you are using CIDR subnet masking, the same logic applies, but
the configuration is more tricky. For example, the address
141.251.24.128/25 represents any host from network
141.251.24.128/255.255.255.128.
Sequence Numbering
You can specify the sequence number for each access profile entry.
If you do not specify a sequence number, entries are sequenced in
the order they are added. Each entry is assigned a value of five more
than the sequence number of the last entry.
Permit and Deny Entries
If you have configured the access profile mode to be none, you must
specify each entry type as either
permit or deny. If you do not
specify the entry type, it is added as a
permit entry. If you have
configured the access profile mode to be
permit or deny, it is not
necessary to specify a type for each entry.
Autonomous System Expressions
The as-path keyword uses a regular expression string to match
against the AS-path. Regular expression notation can include any of
the characters listed in Table 17.2.
Table 17.2: Regular Expression Notation
Character Definition
[,] Specifies a range of numbers to be matched
. Matches any number
^ Matches the beginning of the AS path
$ Matches the end of the AS path
– Matches the beginning or end, or a space
- Separates the beginning and end of a range
of numbers