Why isn't EIGRP peering up in the EVE-NG environment?

Question

Cisco

There are 2 IOL images of routers. the simplest scheme - connected to each other in a straight line.
Config first

interface Ethernet0/1
 bandwidth 128
 ip address 10.1.24.1 255.255.255.252
router eigrp 10
 network 172.30.0.0

Config of the second

interface Ethernet0/1
 bandwidth 128
 ip address 10.1.24.2 255.255.255.252
!
router eigrp 10

They ping each other. And EIGRP neighborhood does not rise. If you look at wireshark on the interface of any of the routers (i.e., consider this one monitoring point), you can see that Hello packets fly away, but nothing arrives on the other side. How so? I do not get it.

Answer 1

EIGRP exchanges session and routing information over multicast, check if it is blocked on devices. If you want unicast - register the neighborhood statically.
Make sure that all advertised subnets are in UP, and if these are virtual interfaces, then the ports on which ALLOW vlan data are also in UP status.
Also, add the peering subnet (10.1.24.0/30) to the announcement on both sides and the neighborhood will rise. Why so - it is described in dock on EIGRP.