1921 Router Config Help

[cwasilak]

Hello, I know very little about configuring cisco hardware and need some help..... we are currently running an 1800 router and I obtained a new to me 1921 router and would like to replace the 1800 router with the newer one, I managed to get it factory reset but need help getting the config from the 1800 to the 1921 I have the config file and tried copying it but the 1921 is different. Can someone convert my config file for me?

Thanks 

[liviu.gheorghe]

Hello @cwasilak ,

can you share the config for the 1800 router and also for the new 1921 router?

[cwasilak]

LG,

Thanks for getting back to me, the 1921 has no config currently I was able to default back to new, as for the 1800 I can, but I noticed it has a Self-Signed-Certificate I do not know if it is ok to publish this publicly (excuse my ignorance) Thanks

[liviu.gheorghe]

The defaulted configuration for the 1921 is useful for the interface numbering. You can remove the certificate and send it.

[cwasilak]

understood, I will post them in a little bit, thank you

[liviu.gheorghe]

This is the configuration - just paste it in the 1921 in config mode. You should have the same users and passwords, including enable, like you have on the 1800. After you have pasted the config, move the cable from FastEthernet0/0 to GigabitEthernet0/0 and test that it's working. 

After testing is succesfull, exit config mode (CTRL-Z) and save the config with the command copy running-config startup-config

[cwasilak]

Thank you I will give it a try hopefully later today and let you know, where do I start pasting from ? the host name?

Current configuration : 950 bytes
!
version 15.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname SR-1921-1 

[liviu.gheorghe]

You select everything starting with version 15.4 until end and copy it.

Then you access the router via console and issue the following commands:

Router>enable

Router#configure terminal

Router(config)#

and here you paste what you copied from the config file. After the paste operation has finished, you will see that the router prompt is Router#

Now issue the command copy running-config startup-config to save the config in nvram.

[cwasilak]

LG,

I did everything as we discussed, it does look like I have any errors but it was not working either, I recorded everything for you to review

[liviu.gheorghe]

You did everything ok - the pasting of the configuration I sent was without any error. I did notice something strange in the configuration of the 1800 router - it has only one interface configured, the LAN interface FastEthernet0/0. A router with only one interface doesn't really make sense because routers are supposed to route packets between networks attached to different interfaces.

Another thing I noticed is the fact you have in the 1800 router configuration some static routes:

ip route 0.0.0.0 0.0.0.0 10.255.255.253
ip route 10.0.0.0 255.255.255.0 10.255.255.252
ip route 10.10.1.0 255.255.255.0 10.255.255.252
ip route 10.10.5.0 255.255.255.0 10.255.255.252
ip route 10.10.100.0 255.255.255.0 10.255.255.252
ip route 10.10.200.0 255.255.255.0 10.255.255.252

which point to next hop 10.255.255.253, for the default route, and 10.255.255.252 for the other static routes. This is ok from a configuration standpoint, but it will only apply to traffic originated from the router itself.

The question is, what purpose does this router serve? Do you have a network topology diagram which you can share?

[cwasilak]

I know it does not make any sense, I inherited this disaster, all i know is that when I unplug it I lose internet, I am not sure if I loose internal network also never checked, but basically here is my topo :   Cable modem goes into ASA5510 2 lines leave the asa5510 one goes to a 3560G for the clients (Access Switch) and the other goes into port 1 on another 3560G (Distribution switch/Vlan Gateway) for the servers and the router is plugged into port 2 on this switch.

[liviu.gheorghe]

Ok. Can you share the config for the 3560G (Distribution switch/Vlan Gateway)?

[cwasilak]

ip address 10.10.100.254

Vlan 2    Data 

Vlan 5    Wireless

Vlan 50  Server

Vlan 60 Blacco

Vlan 200 Video

Vlan 500 Management

Vlan 777 Router-FW

                    Gateways

Vlan interface 2       10.10.1.254  255.255.255.0

Vlan interface 5       10.10.5.254  255.255.255.0

Vlan Interface 50     10.0.0.254   255.255.255.0

Vlan interface 60      10.10.60.254 255.255.255.0

Vlan interface 200    10.10.200.254  255.255.255.0

Vlan interface 500   10.10.100.254  255.255.255.0

Vlan interface 777   10.255.255.252  255.255.255.0  

[liviu.gheorghe]

Can you share the output of the show running-config ?