Re : Prefix-list Question.

Answered Question
Jul 9th, 2009
User Badges:

Hi,

Below is a prefix-list that I have some queries abt.


ip prefix-list MJ permit 139.73.212.148/31 le 32


1) I want to check that the ip 212.148 is the start IP of the prefix-list right, meaning it is included in the prefix-list unlike a network address in a normal subnet mask which is not part of the usable IP.


2) What is the range of this prefix-list ? The router takes a /31 which has a SM of 255.255.255.254 but not too sure what what the allowed IPs in this prefix-list, I am guessing it is 212.148, 212.149


Pls advice,


Regards,

InternetB.

Correct Answer by Richard Burts about 7 years 10 months ago

InternetB.


You are correct about both 1) and 2).


HTH


Rick



  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
Loading.
Correct Answer
Richard Burts Thu, 07/09/2009 - 03:05
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN

InternetB.


You are correct about both 1) and 2).


HTH


Rick



Richard Burts Thu, 07/09/2009 - 03:14
User Badges:
  • Super Silver, 17500 points or more
  • Hall of Fame,

    Founding Member

  • Cisco Designated VIP,

    2017 LAN, WAN

InternetB


I am glad that my response helped to resolve your question. Thank you for using the rating system to indicate that your question was resolved (and thanks for the rating). It makes the forum more useful when people do mark a thread as resolved so that as people read about an issue they will know that they will see a response which did lead to resolution of the issue.


HTH


Rick

Dra60s6Ion Mon, 03/11/2013 - 06:58
User Badges:

1. But what's happening when I have an ip prefix-list List permit 192.168.10.1/32? This means le = ge = 32, right?


2. So in this case, if I have a route-map which is matching an 'ip address prefix-list List', then it will never match, right? Because netmask of a route can't be between le and ge.


3. What is compared with le and ge when I have in a route-map 'match ip next-hop'?

Actions

This Discussion