Rommon 2 ipaddress

Basically you will need to use TFTP to get the IOS back on. HERE is an article from Cisco that explains how to do it. I have done this before and even though it takes a while to reload the IOS (because in my case I had to use a serial connection at 9600 baud) it does work.

Steps for these found on http://support.xbox.com/en-US/xbox-live/connecting/error-cant-obtain-ip-address-router-modem-978976 and include
1. Restart modem and router2. Check wireless password3. Configure IP settings manually 4. Set an alternate MAC Address5. Turn on DHCP.6. Bypass router entirely and connect instead to the modem using a wired connection

HI,
It May be the problem with the IOS in the router Flash

• Try hard reboot of the router If it is not soled proceed next.
• while the router reboot press Pause button continuously, it will enter into the ROMMON mode.
• using the Xmodem option upload the correct IOS, for refer Please refer the link
• Please check the configuration Loading by confreg or config-register command and change into confreg 0x2142 to load from the Flash and reboot the router.

You most likely don't have the correct IOS on your 3640 router. Other possibilities include bad VIC card or non-compatible VIC card.

Hi,
In this regard, I would recommend you to forward certain port no’s on
the Router.

Port numbers: UDP- 88, TCP/UDP- 3074

It is in this context, I would suggest you to please try with the
following troubleshooting steps:

A) Assign static IP and DNS address to the XBOX.

1. Assign IP address as: 192.168.1.50; Subnet mask as: 255.255.255.0
and Default Gateway as: 192.168.1.1
2. Assign Primary DNS Address as: 192.168.1.1 and Secondary DNS
Address as: 4.2.2.2

# Please Contact X-Box Technical Support to assign the Static IP
Address on Your X-Box.


C) Open the ports on the Router using the following steps:

1. Click on Port Forwarding under Advanced.
2. Click on ‘Port Forwarding’ on the left hand column on the screen.
3. On the bottom of the screen, click on ‘Add Custom Service’.
4. Give a name to the service (for example, XBOX1).
5. Select Service Type as UDP and key in the starting port and ending
port as 88.
6. In the Server IP Address specify 192.168.1.50
7. Hit ‘Apply’.
8. Click on 'Wan Setup' Under 'Advanced'.
9. Check the box 'DMZ Server'. Type in the IP Address 192.168.1.50.
Click On 'Apply'.
10. Log Out of the Router Page.

Please repeat Steps 3 – 7 to configure the ports “UDP/TCP 3074”.

what shows the following?

dir flash: If IOS is ok the follow the below step The router will guide you through changing the registry. You want to press y to chang the configuration. The only other change you need to make is the change to the console baud rate, set that to 7 (115200).

do you wish to change the configuration? y/n [n]: y
enable "diagnostic mode"? y/n [n]:
enable "use net in IP bcast address"? y/n [n]:
enable "load rom after netboot fails"? y/n [n]:
enable "use all zero broadcast"? y/n [n]:
disable "break/abort has effect"? y/n [n]:
enable "ignore system config info"? y/n [n]:
change console baud rate? y/n [n]: y
enter rate: 0 = 9600, 1 = 4800, 2 = 1200, 3 = 2400
4 = 19200, 5 = 38400, 6 = 57600, 7 = 115200 [0]: 7
change the boot characteristics? y/n [n]:

Configuration Summary
enabled are:
break/abort has effect
console baud: 115200
boot: the ROM Monitor

do you wish to change the configuration? y/n [n]:
You must reset or power cycle for new config to take effect.

rommon 2>

3. When you reset the router in your console window you will see characters that you cannot read. You have to stop the session and set your baud rate to 115200. This will let you increase the speed that you use to transfer the file.
4. At the rommon prompt enter xmodem -c {filename}
5. When prompted, enter y to continue
6. From your hyperterminal prompt, click on transfter then send file
7. Select the IOS image then change the protocol to xmodem via the dropdown box then click send.
8. After the IOS has been downloaded, change the boot order by using the confreg 0x2102 command.

Let's look at how to configure basic DHCP on an IOS-based router. For this example, we'll start off with the default configuration on a Cisco 2611 router running IOS 12.2. (The configuration should be the same—or very similar—on all IOS-based routers).
To begin, connect the router's Ethernet port to a switch, and connect the switch to a laptop, which will serve as the DHCP client.
To configure Cisco IOS DHCP, follow these steps, which include sample commands:
1.Configure an IP address on the router's Ethernet port, and bring up the interface. (On an existing router, you would have already done this.)
Router(config)# interface ethernet0/0
Router(config-if)#ip address 1.1.1.1 255.0.0.0
Router(config-if)# no shutdown2.Create a DHCP IP address pool for the IP addresses you want to use.
Router(config)# ip dhcp pool mypool3.Specify the network and subnet for the addresses you want to use from the pool.
Router(dhcp-config)# network 1.1.1.0 /8 4.Specify the DNS domain name for the clients.
Router(dhcp-config)#domain-name mydomain.com5.Specify the primary and secondary DNS servers.
Router(dhcp-config)#dns-server 1.1.1.10 1.1.1.116.Specify the default router (i.e., default gateway).
Router(dhcp-config)#default-router 1.1.1.17.Specify the lease duration for the addresses you're using from the pool.
Router(dhcp-config)#lease 78.Exit Pool Configuration Mode.
Router(dhcp-config)#exit

I hope this is helpfull for you.

Thanks

Vikrant

Two ways to do that are xmodem (slow) or Tftp from rommon mode. (fast)
Place the IOS image in your tftp server directory and start tftp server.
Then enter the following in the switch exactly as below as all are case sensative:
rommon 1> IP_ADDRESS=xxx.xxx.xxx.xxx
rommon 2> IP_SUBNET_MASK=xxx.xxx.xxx.xxx
rommon 3> DEFAULT_GATEWAY=xxx.xxx.xxx.xxx
rommon 4> TFTP_SERVER=xxx.xxx.xxx.xxx
rommon 5> TFTP_FILE=full file name of ios as it reads
rommon 6> TFTP_CHECKSUM=0
this one is in lower case
rommon 7> tftpdnld

If you dont have a tftp server below is a link to a free one
http://www.solarwinds.net/Tools/Free_tools/TFTP_Server/

You will need the .bin IOS image for this and not the .tar file. The .tar file contains router cluster management files that you must issue the archive tar command to load all of the files. Can do that if needed after router is back online.

P.S.: If this information was helpful, please rate this solution.

Does the router boot to rommon mode everytime you turn it on?

There are two reasons why the router could be booting to rommon mode

1. There isn't a valid ios image loaded in flash memory
2. The configuration register is set to a number that ends with '0'

Change the configuration register setting to a number that ends in '2'. (i.e. 0x2402)

You do this with the command: confreg 0x2402 <hit enter key> (in rommon mode)

Reboot the router and it will first search for boot system commands in the startup config, if none found it will boot to the first valid ios image in flash memory.

If there isn't a valid ios image in flash memory, the router will continue to boot to rommon.

Go to run type in cmd a dos prompt will appear.

type in ipconfig /all and check your ip address. Chances are your ip address is 169.x.x.x which is an internal ipaddress. You will need to manually assign an ip address To do this go to my network click on view connections right mouse click the lan icon then go to the tcp/ip config and manually assign your ip address.

It needs to be the same subnet as your router so use 192.168.1.xx anything but 1 then you should be fine.

good luck