26
Items in address prefix list should at least have one item set to permit mode. The deny mode
items can be defined first to fast remove the unmatched routing messages, however if all the
items are set to deny mode, any route will not be able to pass the filtering of this address prefix
list. We can define a permit 0.0.0.0/0 le 32 item after several deny mode items are defined so to
permit all other routing messages pass through. Only default route will be matched in less-equal
32 is not specified.
1.2.5.1 Monitor And Debug Command
1.2.5.1.1 show ip prefix-list <list-name>
Command: show ip prefix-list [<list-name> [<ip_addr/len> [first-match | longer] | seq
<sequence-number>]]
Function:
Show by prefix-list names.
Parameter: <list-name>
is the name of prefix-list,
<ip_addr/len>
is the prefix ip address and
the length of mask,
first-match
stands for the first route table matched with specified ip address,
longer
means longer prefix is required,
seq
means show by sequence number,
<sequence-number>
is the sequence number, ranging between 0
～
4294967295.
Default:
None
Command Mode:
all modes
Usage Guide:
All prefix-list will be listed when no prefix-list name is specified.
Example:
Switch#show ip prefix-list
ip prefix-list 1: 1 entries
deny any
ip prefix-list mylist: 1 entries
deny 1.1.1.1/8
Switch#show ip prefix-list mylist 1.1.1.1/8
seq 5 deny 1.1.1.1/8 (hit count: 0, recount: 0)
Displayed information
Explanation
ip prefix-list mylist: 1 entries
Show a prefix-list named mylist which
includes 1 instance.
seq 5 deny 1.1.1.1/8 (hit count: 0,
recount: 0)
Show the prefix-list contents sequence
numbered 5. hit count: 0 means being hit 0
time, recount: 0 means referred 0 time.
1.2.5.1.2 show ip prefix-list <detail | summary>