I am going to try my best to explain the issue that I am having in a lab that I setup. I am adding a screenshot of my lab simulated in packet tracer. I am using IP helper-address commands on all routers so that it passes dhcp commands to my gateway router (labeled ISP) that is giving out IP's. Routers NSSLab01, NSSLab02 and NSSLab05 have no problems pinging the gateway and the computers connected to those routers are pulling the correct ip's from the prospective pools. Once I go more than 2 deep in the router stack, down to NSSLab03 and NSSLab04 I can no longer ping the ISP router or the core switch (switch9). I can however ping all ports on NSSLab01 and I can ping over to NSSLab05 from the bottom 2 routers. I am assuming that EIGRP is allowing me to ping all of the cisco 2911's? However the ISP router is a business class router that brighthouse provided, it can do RIP and RIPvs but not EIGRP. I have setup RIPv2 on all routers, but still cannot ping the ISP router from the bottom 2 routers. Its got me puzzled because the bottom 2 roouters can ping up to NSSLab01 but not past it, while NSSLab02 can ping everything and its in the same stack. Here is a screen shot from packet tracer and below that is the config for NSSLab03.
NSSLab03#show running
Building configuration...
Current configuration : 949 bytes
!
version 15.1
no service timestamps log datetime msec
no service timestamps debug datetime msec
no service password-encryption
!
hostname NSSLab03
!
!
!
!
!
!
!
!
ip cef
no ipv6 cef
!
!
!
!
license udi pid CISCO2911/K9 sn FTX1524TL62
!
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
!
!
!
!
!
!
interface GigabitEthernet0/0
ip address 10.10.5.1 255.255.255.0
ip helper-address 10.10.0.1
duplex auto
speed auto
!
interface GigabitEthernet0/1
ip address 10.10.4.2 255.255.255.0
ip helper-address 10.10.0.1
duplex auto
speed auto
!
interface GigabitEthernet0/2
ip address 10.10.6.1 255.255.255.0
ip helper-address 10.10.0.1
duplex auto
speed auto
!
interface Vlan1
no ip address
shutdown
!
router eigrp 100
network 10.10.4.0 0.0.0.255
network 10.10.5.0 0.0.0.255
network 10.10.6.0 0.0.0.255
!
router rip
network 10.0.0.0
!
ip classless
!
ip flow-export version 9
!
!
!
!
!
!
!
line con 0
!
line aux 0
!
line vty 0 4
login
!
!
!
end
