About NetworkingGeek1

NetworkingGeek1 · 09-08-2023

Hello community,I need help with understanding of what "redistributed in" and "advertised by" really means in "show ip route" output. Originally, I thought that "redistributed in" means that this particular route exist in particular routing protocols...

NetworkingGeek1 · 09-06-2023

Hello community,I have a question about EIGRP authentication. We don’t use plain text authentication, because anyone who can launch “man-in-the-middle attack” can easily steal password which is travelling through the network as a plain text.Please co...

NetworkingGeek1 · 09-06-2023

Hello community, I was checking how EIGRP is working on ISRv platform and noticed some strange behavior. Looks like Split Horizon rule doesn't work there. I configured EIGRP adjacencies between two routers: R1 & R2. Let's say there is network 192.16...

NetworkingGeek1 · 08-12-2023

Hello Community, Can you please explain below output of show version command ? I'm confused with it, why it indicates there are two operating systems IOS & IOS-XR on the same router? And plus both operating systems have different versions. How is it ...

NetworkingGeek1 · 07-17-2023

Hello community,I've came across some interesting and strange behavior of 802.1x authentication in real production environment. We support client's network environment which authenticates wired users with 802.1x. There are several access switches and...

NetworkingGeek1 · 09-09-2023

@David Ruess Thanks. So, I if understand correctly, "Advertised by" is just naming convention (probably not the best one) which was chosen by code writers to say that this route was redistributed from one protocol to another? I checked the same scen...

NetworkingGeek1 · 09-08-2023

Hello @David Ruess Thank you for the reply. Honestly, I'm still not clear what "Redistributing via" and especially what "Advertised by" means. Why "Advertised by" appears only when route is redistributed, not injected via network command?

NetworkingGeek1 · 09-08-2023

Hello M02@rt37 Please check "show ip route" from R2 and you'll see that there is no "Advertised by" even though it sends route to R3 via EIGRP, "Advertised by" appears on R2 only when I redistribute EIGRP routes in to OSPF process and only then it s...

NetworkingGeek1 · 09-06-2023

@David Ruess Hello. Thank you for the helpful reply. I wasn't speaking about cracking hashing algorithm, I was just saying why it's not possible just to capture hash function and craft a new packet: put there this function, put a malicious EIGRP upd...

NetworkingGeek1 · 09-06-2023

Hello @David Ruess and @Giuseppe Larosa Thank you so much. I checked it again and indeed R2 sends back routes with infinity delay, which, if I understand it correctly, means infinity metric.

Member Since	‎03-15-2022 08:03 AM
Date Last Visited	‎10-31-2023 06:39 AM
Posts	134
Total Helpful Votes Received	42

User Statistics

User Activity

Confusion with "redistributed in" and "advertised by" in show ip route

EIGRP authentication

EIGRP Split Horizon seems to be not working on virtual platforms

Strange output of "show version" on ISR4331/K9

Strange behavior of Switch with 802.1x authentication.

Re: Confusion with "redistributed in" and "advertised b

Re: Confusion with "redistributed in" and "advertised b

Re: Confusion with "redistributed in" and "advertised b

Re: EIGRP authentication

Re: EIGRP Split Horizon seems to be not working on virtual platforms