[c-nsp] 3550 VLAN interfaces

[Yuval Ben-Ari]

if you want hosts on multiple ports to use the switch as their L3, you
must create Vlan interface,
otherwise, if you configure the L3 on a routed port ("no switchport"),
you could only have this port access this L3 address
Also note that because Vlan interface (SVI) is logical it has critical
restrictions like no support for QoS (service-policy), not sure what
else but if you plan to use some features it might very well not work on
Vlan interface.
my recommendation is to use routed ports as much as possible, it's much
cleaner and works well.

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net 
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Dan Armstrong
> Sent: Thursday, August 26, 2004 18:34
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] 3550 VLAN interfaces
> 
> 
> Can anyone think of a functional difference on a 3550 between 
> creating a vlan 
> interface, and assigning a switchport (switchport mode 
> access) to that VLAN, 
> versus just putting an IP address on an interface (no switchport)?
> 
> Operationally to keep things consistent, it would be easier 
> to make vlan 
> interfaces and assign ports to VLANs, but I don't want to 
> take a "hit" in 
> performance somehow....
> 
> Thanks,
> Dan.
> 
> 
> 
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