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тАО03-26-2008 08:12 AM
тАО03-26-2008 08:12 AM
Hello,
I have a ProCurve 2626, firmware version H.08.60, ROM version H.08.02. One of the ports on this switch is a WAN link to my colo site. It is passing 3 VLANS: VLAN1 is Untagged, VLANs 2 & 3 are Tagged. I need to monitor all traffic on this port to assess bandwidth usage over the WAN link. I have enabled port monitoring, configured a monitor port, and set the WAN port to mirror traffic to the monitor port. Here is the config:
Switch# sh mon
Network Monitoring Port
Mirror Port: 1
Monitoring sources
------------------
26
However, on my analyzer, connected to the monitoring port (1), I only see traffic from any one VLAN, and only if the monitor port is an Untagged port in that VLAN. For example, if port 1 is configured in VLAN1 Untagged, VLAN2 Tagged, VLAN3 Tagged, the analyzer only sees traffic from VLAN1. If port 1 is VLAN1 Tagged, VLAN2 Untagged, VLAN3 Tagged, it only sees traffic from VLAN2.
To asses total bandwidth, I need to analyze traffic from all 3 VLANS. Any insight appreciated.
Thanks!
I have a ProCurve 2626, firmware version H.08.60, ROM version H.08.02. One of the ports on this switch is a WAN link to my colo site. It is passing 3 VLANS: VLAN1 is Untagged, VLANs 2 & 3 are Tagged. I need to monitor all traffic on this port to assess bandwidth usage over the WAN link. I have enabled port monitoring, configured a monitor port, and set the WAN port to mirror traffic to the monitor port. Here is the config:
Switch# sh mon
Network Monitoring Port
Mirror Port: 1
Monitoring sources
------------------
26
However, on my analyzer, connected to the monitoring port (1), I only see traffic from any one VLAN, and only if the monitor port is an Untagged port in that VLAN. For example, if port 1 is configured in VLAN1 Untagged, VLAN2 Tagged, VLAN3 Tagged, the analyzer only sees traffic from VLAN1. If port 1 is VLAN1 Tagged, VLAN2 Untagged, VLAN3 Tagged, it only sees traffic from VLAN2.
To asses total bandwidth, I need to analyze traffic from all 3 VLANS. Any insight appreciated.
Thanks!
Solved! Go to Solution.
2 REPLIES 2
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тАО03-26-2008 05:58 PM
тАО03-26-2008 05:58 PM
Solution
Most likely the other VLANs are being mirrored and are including the 802.1Q tag - and your NIC is discarding these packets.
Usually you can fix this by a few registry edits for your NIC: http://wiki.wireshark.org/CaptureSetup/VLAN
Usually you can fix this by a few registry edits for your NIC: http://wiki.wireshark.org/CaptureSetup/VLAN
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тАО03-28-2008 08:24 AM
тАО03-28-2008 08:24 AM
Re: Montoring VLANs
Thanks Matt,
With that tip I have isolated the issue to the NIC on the analyzer.
With that tip I have isolated the issue to the NIC on the analyzer.
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