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http duplicated packets

luciano.carvalho
Level 1
Level 1

‎10-08-2004 11:31 AM - edited ‎03-02-2019 07:07 PM

Hi,

I'm working on a issues with http packets been duplicated by catalyst 6513.

The windows clients issue a request to access any web site. The request is sento to the http filter server that is connected on 6513. The packets arrive in the server duplicated. With network monitor we confirmed that the clients are sending just one packet.

Anyone can help?

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Prashanth Krishnappa
Cisco Employee
Cisco Employee

‎10-08-2004 12:25 PM

Are you using Vlan SPAN? For VSPAN sessions with both ingress and egress SPAN configured, the system operates as follows based upon the type of supervisor engine you have:

WS-X6K-SUP1A-PFC, WS-X6K-SUP1A-MSFC, WS-X6K-SUP1A-MSFC2, WS-X6K-SUP2-PFC2, WS-X6K-SUP2-MSFC2—Two packets are forwarded by the SPAN destination port if the packets get switched on the same VLAN.

WS-X6K-SUP1-2GE, WS-X6K-SUP1A-2GE—Only one packet is forwarded by the SPAN destination port.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_7_6/confg_gd/span.htm#1019879

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