In the event your L3 resides on the switch and not an external interface is what the statement is in regards to.
This was the first implementation practice as Private VLANs were first introduced on the 6500's. So on the VLAN interface interface vlan(primary) switchport private-vlan associated <secondary vlans> Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: <mailto:[email protected]> [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: <http://www.ipexpert.com/chat> www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at <http://www.ipexpert.com/communities> www.ipexpert.com/communities and our public website at <http://www.ipexpert.com/> www.ipexpert.com From: [email protected] [mailto:[email protected]] On Behalf Of Kingsley Charles Sent: Tuesday, May 24, 2011 9:35 AM To: [email protected] Subject: [OSL | CCIE_Security] Interface vlan purpose with Private vlans Hi all We can configure L3 vlan interface for primary vlan of a private vlan. I need to understand the purpose of this vlan interface. As per the Cisco docs, it is used to route private vlan ingress traffic. Does ingress mean from secondary vlans to outside or from outside to secondary vlans? Snippet from http://www.cisco.com/en/US/docs/switches/lan/catalyst3750/software/release/1 2.2_25_see/configuration/guide/swpvlan.html#wp1044399 Map the secondary VLANs to the Layer 3 VLAN interface of a primary VLAN to allow Layer 3 switching of private-VLAN ingress traffic. With regards Kings
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