This command allows the permit and deny entries of a specified access list to be resequenced with an initial sequence number value determined by the starting-sequence-number
argument, and continuing in increments determined by the increment
argument. If the highest sequence number exceeds the maximum possible sequence number, then no sequencing occurs.
For backward compatibility with previous releases, if entries with no sequence numbers are applied, the first entry is assigned a sequence number of 10, and successive entries are incremented by 10. The maximum sequence number is 2147483647. If the generated sequence number exceeds this maximum number, the following message is displayed:
Exceeded maximum sequence number.
If the user enters an entry without a sequence number, it is assigned a sequence number that is 10 greater than the last sequence number in that access list and is placed at the end of the list.
If the user enters an entry that matches an already existing entry (except for the sequence number), then no changes are made.
If the user enters a sequence number that is already present, the following error message is generated:
Duplicate sequence number.
If a new access list is entered from global configuration mode, then sequence numbers for that access list are generated automatically.
Distributed support is provided so that the sequence numbers of entries in the Route Processor (RP) and line card (LC) are in synchronization at all times.
Sequence numbers are not saved in NVRAM. That is, the sequence numbers themselves are not saved. In the event that the system is reloaded, the configured sequence numbers revert to the default sequence starting number and increment.
This command works with named standard and extended IP access lists. Because the name of an access list can be designated as a number, numbers are acceptable as names as long as they are entered in named access list configuration mode.