You need that. A big difference.
here is my 2 cents. Vlan allowed is like do not prune any traffic of the allowed vlans. Block all other VLANs traffic. While PRUNING prevents the " unnecessay" traffic from the ALLOWED VLANs if the fowarding switch does not have connected ports of the downstream switch in "FOWARDING state" . From: [email protected] To: [email protected] Date: Fri, 29 May 2009 15:39:22 -0500 CC: [email protected] Subject: [OSL | CCIE_RS] VTP Prune ? To all So If I enable VTP prune it will prune back unused vlans correct. So why do I need to use commands like switchport trunk allowed vlan 97. If I have pruning enabled I would not need this correct ? Ed, _________________________________________________________________ Hotmail® has a new way to see what's up with your friends. http://windowslive.com/Tutorial/Hotmail/WhatsNew?ocid=TXT_TAGLM_WL_HM_Tutorial_WhatsNew1_052009
