In the lesson, when Rene states “regular IP packets” he means unicast rather than multicast packets. I agree it is not quite clear, so I will let him know to consider modifying it to make it clearer.
The point is that EIGRP control plane traffic is sent as unicast rather than multicast traffic, thus allowing the EIGRP routers that are not physically directly connected to communicate as EIGRP neighbors.
I can’t see any command of remote neighbors why is that?? I am using
Cisco IOS Software, 7200 Software (C7200-ADVENTERPRISEK9-M), Version 15.2(4)S7, RELEASE SOFTWARE (fc4)
There are a couple of things that may affect your configuration. First of all, you have to ensure that you are in EIGRP named mode, since using a numerical AS will not give you access to the specific command.
Secondly, it could be an issue of compatibility. The remote-neighbors command was integrated into the 15.3(3)S IOS version according to this Cisco command line reference. It looks like you’re using an earlier version. So this is the reason you don’t see it in your CLI.
The remote-neighbors command was integrated into the “S” train of the IOS images (15.3(3)S). The “XB” train that you mention is a specialized interim branch of the IOS images. It’s not part of the mainline “S” or “T” trains where most new feature development happens.
Doing a bit more research, I have found that the C7200 platform never officially received EIGRP OTP support, much like it didn’t receive any support for other similar WAN routing technologies. None of those were implemented in the 7200 series IOS trains.
OTP was mainly targeted for the ASR and ISR devices, and was later extended to IOS-XE and IOS 15.5(3)S
So, even though you’re running “15.3(3)” in numbering, the 7200 “XB” build doesn’t have OTP integrated because the feature simply never made it to that platform family.