-----Original Message----- From: Jay Nakamura [mailto:zeusda...@gmail.com] Sent: den 29 september 2010 03:28 To: NANOG Subject: tagged vs. untagged VLAN
>In a SP environment, you need to hand off two VLANs to a customer, is >there any advantage or disadvantage in doing the following two setups? > >- One untagged and one tagged VLAN >- Two tagged VLAN and no untagged VLAN > >I can't think of anything other than some equipment may not let you >have no untagged VLAN. But it's bugging me that something could go >wrong by not having untagged native VLAN that I can't think of. I would go with tagged for both VLANs. If you can't tag the native in your equipment create a dummy VLAN and use it as native on the link and all VLANs will be tagged. If you know the customer will be using more VLANs later on Q-in-Q might be a good solution or you will have to transport a lot of VLANs in your network and they might collide with other customers etc. /Daniel
