Thanks, Karthik, It's SW3 in this task but anyways, I'm still not convinced ;) Whatever happens on VLAN45 is monitored by SW3 and forwarded to RSPAN VLAN 450. Then we have two sets of traffic from VLAN45, the first one that was sent by SW3 and the second one that was picked by SW4. The question is why we need such a redundancy?
Eugene From: Karthik sagar [mailto:[email protected]] Sent: Monday, August 06, 2012 12:40 PM To: Eugene Pefti Cc: [email protected]; Matt Hill; CCIE Security Maillist Subject: Re: [OSL | CCIE_Security] Volume 1 3.6 Monitoring Traffic with IDS Cat4 monitor session 1 source vlan 45 , 450 I think vlan 45 is also needed. Consider, vlan 5----[R5]------vlan45---[Cat2]=====trunk=======[Cat4]---vlan45------[R4]----vlan 4 ans lets say, the IPS sensing interface is connected to Cat4. Cat4 needs to monitor both vlan 45 and 450 to get the complete flow. Otherwise, it just receives packets forwarded by Cat2. Regards, Karthik
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