problem with remore services

[eMerb]

hi everyone 

i have problem to change one of my client network topology and IP subneting to implement vlan in their network,first i explain current and needed topology by picture ,

below is current topology that network is base on layer 2 switches and connect to remote services by wireless link that connected to remote router and provide route to remote needed services on 5.5.5.0 and 6.6.6.0 subnet, the remote router is not in my control and can not change config on it,

now i need the above topology that the remote router connected to local router and that router concocted to cisco 3850 that provide vlan and inter vlan routing. i change the subnet of clients to 4.4.4.0 and assign it to clan in 3850 switch and then make one of the switch port to no switchport and assign IP 2.2.2.2 to it and add IP routeing and IP route 0.0.0.0 0.0.0.0 2.2.2.1 to it,

in router add switch connected interface IP 2.2.2.1 and remote router connected interface 5.5.5.2 and add ip route 6.6.6.0 255.255.255.0 5.5.5.1 and ip route 7.7.7.0 255.255.255.0  5.5.5.1 to router config

now i can ping 5.5.5.1 from router but not from 3850 switch or client that connect from it ,

how can i get connect to remote services with this topology and no need for remote router configuration change?

[Reza Sharifi · Accepted solution]

Hi,

In the current topology, all devices are on the same subnet/vlan and so the remote router does not need any config changes. In the needed topology, you have introduced 2 new subnets/vlans (4.4.4.0 and 2.2.2.0) and so the remote router needs 2 static routes to reach 4.4.4.0 and 2.2.2.0 subnets.

ip route 4.4.4.0 <mask> 5.5.5.2 

ip route 2.2.2.0 <mask> 5.5.5.2

HTH

[eMerb]

thanks for your response reza, 

my initial config when change topology to needed in pic like what you said but  first with that static route  i cant ping ip 5.5.5.2 from my computer that is in 4.4.4.0 rannge, then i add this line to router and switch :

router eigrp 100

network 4.4.4.0

network 5.5.5.0 

after that i can ping and traceroute 5.5.5.2 ip in my router from pc but cant ping 5.5.5.1 in remote router and traceroute just reach ip 2.2.2.1 in my router,

i can ping 5.5.5.1 from my router!!