Re: What are sort of advantage of layer 3 etherchannel ? vs

http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_example09186a00800ef797.shtml#tbl-3

states " An exception to EtherChannel support on Cisco 2600, 3600, and
3700 series routers is when you have installed either the NM-16ESW or
NM-36ESW Ethernet Switch Network Module. Each of these modules
supports a maximum of six EtherChannels, with up to eight ports in an
EtherChannel bundle. "

So it looks valid on the surface. This may be a GNS3 thing? Have you
tried another simulation environment? (w/o the GUI?)

In response to layer 2 vs. layer 3: Do you NEED a trunk? Do you NEED
IP addresses? There are some subtle differences between the
approaches, their configuration, the options for traffic distribution,
etc...

~M

On Jul 18, 2009, at 5:49 PM, Taufik Kurniawan wrote:

> Dear experts ...
>
> I was playing around with etherchannel, using gns3 cisco 3725 +
> NM-16ESW.
> Having trouble to play layer 3 etherchannel. checked here
> http://www.cisco.com/en/US/docs/ios/12_2t/12_2t8/feature/guide/ft1636nm.html#wp1437057and
> did not see any layer 3 ther channel.
>
> 1. Does NM-16ESW not support layer 3 etherchannel ?
> 2. What are sort of advantage of layer 3 etherchannel ? vs layer 2
> ether
> channel ?
>
> Layer 2 :
>
> int po 1
> switchp mo acc
> switchp acc vlan x
>
> int rang f0/1 - 3
> channel 1
>
> int vlan x
> ip add xxxxx
>
> Layer 3 :
> int po 1
> no switchp
> ip add xxxxx
>
> int rang f0/1 - 3
> channel 1
> no switchp
>
> seems like all the same .... as both will be routed by using virtual
> interface ..... int po1 vs int vlan x
> Did i miss something ?
>
>
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Received on Sat Jul 18 2009 - 19:26:58 ART