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acbenny
Beginner

Prefix list issue

Hi all,

What means of ip prefix-list cisco seq 10 permit 0.0.0.0/0 le 19

The address range is (1.0.0.0 - x.255.224.0) ?

4 REPLIES 4
Nagendra Kumar Nainar
Cisco Employee

HI,

It should match anything network with subnet mask less than or equal to 19 bits.

Regards,

Nagendra

acbenny
Beginner

how about the address range below prefix-list

ip prefix-list xyz seq 5 permit 210.177.168.0/24 le 32

Hi,

ip prefix-list XYZ permit A.B.C.D/24 le

/24 will check to match the prefix and Mask will check the mask of the prefix. So if you have configured as,

ip prefix-list xyz seq 5 permit 210.177.168.0/24 le 32, it matches all the prefix with 210.177.168. (3 octects) and the mask can be anything le 32.

ip prefix-list xyz seq 5 permit 210.177.168.0/24 le 32

=> anythin frm 210.177.168.1 - 210.177.168.255 will be permitted.