Wireshark mailing list archives
Re: Duplicate Packets when importing .pcap from Cisco NAM module.
From: Kevin Cullimore <kcullimo () runbox com>
Date: Tue, 10 Aug 2010 12:43:20 -0400
On 8/10/2010 11:14 AM, Sake Blok wrote:
Not sure how to do it in NAM,
It may well vary by product line (given the vendor in question, how could it not?), but my current understanding is that NAM requires the configuration of data sources, which generally are a subset of available mechanisms on the platforms hosting the ports to be captured from, such as SPAN or NDE. I went with the example I knew best.
but the principe is to only capture "incoming" (RX) packets instead of "both" incoming and outgoing. You need to do this, since every packet enters *and* leaves the VLAN, thus is captured twice if you capture both. This should be configured at the source side of the SPAN definition... Cheers, Sake On 10 aug 2010, at 16:19, Fraasch, James M. wrote:How do you do that? James Fraasch Network Engineer From: wireshark-users-bounces () wireshark org [mailto:wireshark-users-bounces () wireshark org] On Behalf Of Kevin Cullimore Sent: Monday, August 09, 2010 5:45 PM To: wireshark-users () wireshark org Subject: Re: [Wireshark-users] Duplicate Packets when importing .pcap from Cisco NAM module. On 8/9/2010 1:01 PM, Akhtar Rasool wrote:Hello everyone, I am seeing duplicate packets when importing packet captures from Cisco NAM module into Wireshark. Would appreciate any ideas to avoid that. Thanks.If you're relying upon SPAN to monitor VLANs, you may want to ensure that you're doing so unidirectionally.Regards, Akhtar ___________________________________________________________________________ Sent via: Wireshark-users mailing list <wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe___________________________________________________________________________ Sent via: Wireshark-users mailing list<wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe___________________________________________________________________________ Sent via: Wireshark-users mailing list<wireshark-users () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-users Unsubscribe: https://wireshark.org/mailman/options/wireshark-users mailto:wireshark-users-request () wireshark org?subject=unsubscribe
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Current thread:
- Duplicate Packets when importing .pcap from Cisco NAM module. Akhtar Rasool (Aug 09)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Kevin Cullimore (Aug 09)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Fraasch, James M. (Aug 10)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Sake Blok (Aug 10)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Kevin Cullimore (Aug 10)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Fraasch, James M. (Aug 10)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Kevin Cullimore (Aug 09)
- Re: Duplicate Packets when importing .pcap from Cisco NAM module. Joerg Mayer (Aug 10)