Hello,
I'm implementing EIGRP on a network using Packet Tracer and when I try to ping some PCs, either some packets are lost or it replies with destination host unreachable. I've made sure gateways are correct. Looked through the routing tables and neighbor addresses, but I'm unable to identify the problem. There are some PCs that ping successfully to most PCs and others that don't ping at all, like PC 1. Routers ping successfully to each other and PCs to their routers as well. though.
I've tried to reconfigure EIGRP numerous times, but it's not working. I'm not sure if the gateways are the problem or the EIGRP configuration itself.
Many thanks in advance
Solved! Go to Solution.
i see file, thanks, I think EIGRP auto-summary is the issue here; you should disabled auto summary with command no auto-summary under EIGRP process for all routers. You should not use auto-summary if you do subnetting.
this is what I see on SA-Riyadh to PC2 route is to Null, which means drop packets, AD is 5
SA-Riyadh#sh ip ro 197.155.1.135
Routing entry for 197.155.1.0/24
Known via "eigrp 1", distance 5, metric 28160, type internal
Redistributing via eigrp 1
Last update from 0.0.0.0 on Null0, 00:08:53 ago
Routing Descriptor Blocks:
* 0.0.0.0, from 0.0.0.0, 00:08:53 ago, via Null0
Regards, ML
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You can attach PT file here for us to see; file must be in a zip form, so zip it and attach.
Regards, ML
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file zipped and attached
i see file, thanks, I think EIGRP auto-summary is the issue here; you should disabled auto summary with command no auto-summary under EIGRP process for all routers. You should not use auto-summary if you do subnetting.
this is what I see on SA-Riyadh to PC2 route is to Null, which means drop packets, AD is 5
SA-Riyadh#sh ip ro 197.155.1.135
Routing entry for 197.155.1.0/24
Known via "eigrp 1", distance 5, metric 28160, type internal
Redistributing via eigrp 1
Last update from 0.0.0.0 on Null0, 00:08:53 ago
Routing Descriptor Blocks:
* 0.0.0.0, from 0.0.0.0, 00:08:53 ago, via Null0
Regards, ML
**Please Rate All Helpful Responses **
I did no auto-summary. That totally solved the problem! Thank you so so much!
Do you have an idea why would the 1st reply times out? The rest three replies do come through. It's only happening with PC1.
EDIT: Alright, I just saw the null remark. Now it works perfectly