7600 l2protocol forward vs ME3400 l2protocol-tunnel

ME3400

ME3400 is able to tunnel l2 protocols with the command "l2protocol-tunnel xxx"

Tunneled STP BPDUs have 01-00-0C-CD-CD-D0 as a destination mac-address

7600

On 7600 when using service instances on ES cards there is only one option, l2protocol forward.
As the name implies, the router does not alter the BPDUs. It just forwards them on the bridge domain bypassing the SP.

Tunneled STP BPDUs have 01-00-0C-CC-CC-CD as a destination mac-address

Following these different approaches, they can't interoperate in any easy way..

Creating a Private Key and Public Certificate

Use the following OpenSSL command to create your private key. The command creates a 1,024-bit RSA private key stored in the file private-key.pem.

openssl genrsa –out private-key.pem 1024

Use the following OpenSSL command to create your public certificate. Run the command from the same directory that you ran the previous command to generate your private key. You will be prompted to enter some basic information for inclusion in the certificate, such as your name. The command generates a public certificate stored in the file public-cert.pem.

openssl req –new –key private-key.pem –x509 –days 365 –out public-cert.pem

That's all

Source: http://goo.gl/Cd24F

Enable the console of the standby supervisor on Cisco routers

By default, the console of the standby supervisor on Cisco routers is disabled.

If for any reason you need to enable it, do the following:


router#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
router(config)#redundancy
router(config-red)#main-cpu
router(config-r-mc)#standby console enable

Batch replace a string in several files

At your command prompt type the following

perl -p -i -e 's/oldstring/newstring/g' `grep -il oldstring *`

'oldstring' will be replaced by 'newstring' in all folder files

You can add change the grep command to "grep -ilr oldstring *" in order to make searching recursive