08-07-2021 07:15 PM - edited 08-07-2021 07:31 PM
Hello, I would like to ask for guidance regarding eigrp. Base on the image that is attached each router has 4 VLANs. R1 has VLANs 10, 11,12, and 40(native VLAN) while R2 has VLANs 13,14, 15, and 41(Native Vlan). On VLAN 41 it has a DHCP server and DNS Server connected to it. So far the connection between VLANs within the same router is working properly. Now my problem is that I'm unable to establish a connection between the 2 routers using EIGRP.
Here are some additional Information:
FastEthernet 0/1 - 8 are connected to VLAN 10 on R1 while on R2 it is connected to VLAN 13
FastEthernet 0/9 - 16 are connected to VLAN 11 on R1 while on R2 it is connected to VLAN 14
FastEthernet 0/17 - 24 are connected to VLAN 12 on R1 while on R2 it is connected to VLAN 15
gigabitEthernet 0/1 - 2 are connected to VLAN 40 on R1 while on R2 it is connected to VLAN 41
R1
VLAN 10 - 192.168.10.0/24 gigabitEthernet 0/1.10
VLAN 11 - 192.168.11.0/24 gigabitEthernet 0/1.11
VLAN 12 -192.168.12.0/24 gigabitEthernet 0/1.12
VLAN 40 -192.168.40.0.24 gigabitEthernet 0/1.40
192.168.0.1/30 gigabitEthernet 0/0
R2
VLAN 13 -192.168.13.0/24 gigabitEthernet 0/1.13
VLAN 14 - 192.168.14.0/24 gigabitEthernet 0/1.14
VLAN 15 -192.168.15.0/24 gigabitEthernet 0/1.15
VLAN 41 -192.168.41.0/24 gigabitEthernet 0/1.41
192.168.0.2/30 gigabitEthernet 0/0
Solved! Go to Solution.
08-08-2021 02:44 AM
Thank you for answering my question. The 2 reasons that I'm unable to establish a connection are auto-summary is enabled and the wild mask does not match the network ID
R1
(config)#router eigrp 1
(config-router)#no auto-summary
(config-router)#network 192.168.10.0 0.0.0.255
(config-router)#network 192.168.11.0 0.0.0.255
(config-router)#network 192.168.12.0 0.0.0.255
(config-router)#network 192.168.13.0 0.0.0.255
(config-router)#network 192.168.1.0 0.0.0.3
R2
(config)#router eigrp 1
(config-router)#no auto-summary
(config-router)#network 192.168.14.0 0.0.0.255
(config-router)#network 192.168.15.0 0.0.0.255
(config-router)#network 192.168.16.0 0.0.0.255
(config-router)#network 192.168.1.0 0.0.0.3
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.1.1 (GigabitEthernet0/0) is up: new adjacency
08-08-2021 01:00 AM
Post the R1 and R2 ( show run from bot the device)
here is the simple config to start Eigrp process ?
1. before you enable EIGRP
- make sure Gi 0/0 up on both the sides
- you able to ping p2p IP address each other.
2. below example should work (if not still post-show run)
R1
router eigrp 100
no auto
network 192.168.0.1 255.255.255.252
network 192.168.10.0 255.255.255.0
network 192.168.11.0 255.255.255.0
network 192.168.12.0 255.255.255.0
network 192.168.40.0 255.255.255.0
R2
router eigrp 100
no auto
network 192.168.0.2 255.255.255.252
network 192.168.13.0 255.255.255.0
network 192.168.14.0 255.255.255.0
network 192.168.15.0 255.255.255.0
network 192.168.41.0 255.255.255.0
with this you able to see neighbourship before you add other networks
08-08-2021 02:44 AM
Thank you for answering my question. The 2 reasons that I'm unable to establish a connection are auto-summary is enabled and the wild mask does not match the network ID
R1
(config)#router eigrp 1
(config-router)#no auto-summary
(config-router)#network 192.168.10.0 0.0.0.255
(config-router)#network 192.168.11.0 0.0.0.255
(config-router)#network 192.168.12.0 0.0.0.255
(config-router)#network 192.168.13.0 0.0.0.255
(config-router)#network 192.168.1.0 0.0.0.3
R2
(config)#router eigrp 1
(config-router)#no auto-summary
(config-router)#network 192.168.14.0 0.0.0.255
(config-router)#network 192.168.15.0 0.0.0.255
(config-router)#network 192.168.16.0 0.0.0.255
(config-router)#network 192.168.1.0 0.0.0.3
%DUAL-5-NBRCHANGE: IP-EIGRP 1: Neighbor 192.168.1.1 (GigabitEthernet0/0) is up: new adjacency
08-08-2021 03:59 AM
Nice, it got worked, you were able to resolve the issue. (this is most important part to check all time - as suggested in my post).
I may have to give the network with mask 255.255.255.0 (it should be other way around).
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