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ip prefix-list and same sequence number

If I have these access prefix lists have been configured under same Router, can I have these sequence numbers (number 5 was configured with two different prefix-list names) in the configuration below ? :

ip prefix-list Peter seq 5 permit 205.13.2.3/32
ip prefix-list John seq 5 permit 164.2.7.0/24
ip prefix-list John seq 15 permit 151.2.7.0/24

I feel the configuration should be like below :

ip prefix-list Peter seq 5 permit 205.13.2.3/32
ip prefix-list John seq 15 permit 164.2.7.0/24
ip prefix-list John seq 15 permit 151.2.7.0/24

or as alternate solution it can be like below as well:

ip prefix-list Peter seq 5 permit 205.13.2.3/32
ip prefix-list John seq 10 permit 164.2.7.0/24
ip prefix-list John seq 15 permit 151.2.7.0/24

Any comment to my thought ?

Les Moore

The first one.
Peter is one list by itself and has default seq 5
John is a separate list and would start at seq 5, next entry seq 10, next entry seq 15, etc.

You do not want to put the same sequence number to 2 lines of the same list as your middle example.
There is no value in starting the sequence # in the 2nd list at 10, but neither is there harm.

zillah

ASKER

((You do not want to put the same sequence number to 2 lines of the same list as your middle example)).
I should have tried this on a router, but it was not handy at the time of posting this thread,,,,when I tried on a router the result was this :

Router(config)#ip prefix-list Peter seq 5 permit 205.13.2.3/32
Router(config)#ip prefix-list John seq 15 permit 164.2.7.0/24
Router(config)#ip prefix-list John seq 15 permit 151.2.7.0/24
%Insertion failed - seq # exists with different policy: 15

ASKER CERTIFIED SOLUTION

Les Moore

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