We're Sorry, Full Content Access is for Members Only...

If you like to keep on reading, Become a Member Now! Here is why:

  • Learn any CCNA, CCNP and CCIE R&S Topic. Explained As Simple As Possible.
  • Try for Just $1. The Best Dollar You've Ever Spent on Your Cisco Career!
  • Full Access to our 651 Lessons. More Lessons Added Every Week!
  • Content created by Rene Molenaar (CCIE #41726)

451 Sign Ups in the last 30 days

satisfaction-guaranteed
100% Satisfaction Guaranteed!
You may cancel your monthly membership at any time.
No Questions Asked!

Tags: ,


Forum Replies

  1. Hi Rene,
    How to disable the ip redirect (receive) in Router acting as a host?

    Thanks ,
    Srini

  2. Hi Srini,

    Hmm good question, I’m not sure if there is a command for it to disable this. You might be able to filter the incoming ICMP redirect message with an access-list, that could do the trick.

    This is an exception situation btw, IP routing has to be disabled on the router which is not a common thing to do.

    Rene

  3. Hi Zaman,

    It’s best to disable ICMP redirect completely. This example is great to demonstrate it but it has a design issue. The hosts should use R2 as their default gateway, you won’t need ICMP redirects then :slight_smile:

    Rene

  4. Hello Rene,
    I have a question and I am going to use the below diagram as a reference for my question.

    //cdn-forum.networklessons.com/uploads/default/original/2X/d/da6a4b13219c359e7ae50cde9c02b4b622ad3b05.png

    From this switch when I was trying to reach 10.10.20.20, I was not able to reach it. However, other IP addresses from the same subnet such as 10.10.20.1 or 10.10.20.50 is reachable from the switch.
    After doing some research, I found this:

    Switch#show ip redirects
    Default gateway is 192.168.115.10
    
    Host                      Gateway           Last Use    Tota
    ... Continue reading in our forum

  5. Hello Azm

    To understand why this happened, it’s first important to understand what IP Redirects are and how they work. IP Redirects are ICMP messages that are sent by routers that inform hosts of more appropriate gateways to use to get to a destination. The following documentation explains it excellently, however I will summarise below:

    https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13714-43.html

    Take a look at the following topology:

    //cdn-forum.networklessons.com/uploads/default/original/2X/c/ca0d1e846a88434b77fa2bd662332931

    ... Continue reading in our forum

7 more replies! Ask a question or join the discussion by visiting our Community Forum