Community discussions

MikroTik App
 
User avatar
m3das
just joined
Topic Author
Posts: 14
Joined: Thu Feb 23, 2023 6:10 pm

No IP Adrress on my router using Traceroute

Sat Jun 03, 2023 5:52 am

Hello everyone, is this normal? did not show my router's ip address. mmips v7.9.2
You do not have the required permissions to view the files attached to this post.
 
User avatar
mkx
Forum Guru
Forum Guru
Posts: 11381
Joined: Thu Mar 03, 2016 10:23 pm

Re: No IP Adrress on my router using Traceroute  [SOLVED]

Sat Jun 03, 2023 3:57 pm

It's not normal but it's understandable ... kind of.

Traceroute shows 100% packet loss at first hop which means that traceroute tool has no means of discovering that hop's IP address.
BTW, when running traceroute tool, first hop is not your router, it's first upstream router (your ISP's device).

Now why does this happen? Link is obviously not broken or else subsequent hops would show same results. Which then means that that node likely doesn't send ICMP time exceeded messages when it discards packets with TTL reaching 0 (note, dropping those packets is correct action). Excuse for such behaviour is that sending ICMP time exceeded messages is often task of general purpose processor (even if other tasks are done by ASICs) and can thus be a heavy burden. Some admins, though, disable any ICMP handling altogether just because they were taught that ICMP is not useful and only abused in context of hacking attacks.
 
User avatar
m3das
just joined
Topic Author
Posts: 14
Joined: Thu Feb 23, 2023 6:10 pm

Re: No IP Adrress on my router using Traceroute

Sat Jun 10, 2023 9:20 am

well explained, thank you very much sir mkx.

Who is online

Users browsing this forum: No registered users and 37 guests