From: Scott Morris (smorris@ipexpert.com)
Date: Wed Aug 08 2007 - 12:31:30 ART
The lab should give you enough information to be able to decide between the
two. The protected ports are also called "Private VLAN Edge" in some
documents in case that phrase is used. But there are big differences
between the two.
Protected ports: Any two ports both in protected state will never talk to
each other, but they can talk with anyone else in the VLAN.
Private VLANs: Multiple ways to decide who to talk to or not to talk to,
but the only "open" access ports will be the promiscuous ones, so this is
more restrictive.
If all the lab asks for is for certain ports to not talk to each other, I'd
say the protected is simpler. (Look at point value!) But if more criteria
are given that may steer you towards PVLAN.
Know where to find both on the documentation, and you'll do well with it!
But like most stuff, there's no one solid answer for "always do this".
HTH,
Scott Morris, CCIE4 (R&S/ISP-Dial/Security/Service Provider) #4713, JNCIE
#153, CISSP, et al.
CCSI/JNCI-M/JNCI-J
VP - Technical Training - IPexpert, Inc.
IPexpert Sr. Technical Instructor
A Cisco Learning Partner - We Accept Learning Credits!
smorris@ipexpert.com
Telephone: +1.810.326.1444
Fax: +1.810.454.0130
http://www.ipexpert.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Djerk Geurts
Sent: Wednesday, August 08, 2007 10:25 AM
To: 'Group study'
Subject: PVLAN vs Protected port
GS,
I've been going over details as I have my lab in 2 days and noticed that the
3550 doesn't do PVLAN. The 3550 supports protected ports, the 3560 supports
both.
When should we use which one, now for the 3550 this is a simple choice but
what if the options are left open and the target is a 3560?
-- Djerk www.djerk.nl
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