[c-nsp] metro ethernet capabilities

[Peter Salanki]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Metro Ethernet is like standard Ethernet, except that it is designed  
for Metro networks. Some key differences between metro ethernet and  
regular ethernet:

1) A metro ethernet circuit may only be 20 km in a mSTP ring (Metro  
Spanning Tree Protocol), or 30km if it's point-point.
2) Metro ethernet is only available in 100mbps full-duplex, and  
1000mbps half-duplex.
3) Metro ethernet carrys it's vlan tag after the packets, thus making  
it incompatible with regular ethernet.
4) If you are not using tagged frames, you can use an ME-E converter  
(Metro Ethernet - Ethernet) which will transform the higher voltages  
used in ME to regular Ethernet voltages, and vice-versa. Due to the  
higher voltages in me, Plugging an ME circuit into a normal ethernet  
switch will probably make the ethernet switch self-ignite.
5) Metro ethernet is only available in the Cisco MER 3890 Switch  
(equipped with 37 100mbps full-duplex ports and 89 1000mbps-half duplex)



- --- End Of Joke---

Metro Ethernet is really just a term for the use of ethernet in a  
"metro" network. It's not a separate standard, it's simply just a  
marketing term. To make it simple, Metro Ethernet = Ethernet.

29 jan 2007 kl. 21.16 skrev Rudy Setiawan:

> Hi all,
>
> What are the capabilities of a Metro Ethernet?
> Can it be just like a regular ethernet with trunking capabilities? or
> more in a restrictive way?
> Which Cisco device can offer the Metro Ethernet with almost all the
> functionalities of an ordinary ethernet?
>
> Thank you for the inputs.
>
> Regards,
> Rudy Setiawan
> _______________________________________________
> cisco-nsp mailing list  cisco-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-nsp
> archive at http://puck.nether.net/pipermail/cisco-nsp/

Sincerely

Peter Salanki
Chief Network Engineer
Bahnhof AB (AS8473)
www.bahnhof.se
Office: +46855577132
Cell: +46709174932


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2.2 (Darwin)

iD8DBQFFvmTWiQKhdiFGiogRAq/NAJ4588TTXel5fAAe+rYAJqK441iNeACffZL5
nsa6GNVIw8wre9zAZ0GK7to=
=UaEr
-----END PGP SIGNATURE-----