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Powerconnect 5548 sending untagged frames to Sonicwall
Hello,
On my Sonic Wall's packet monitor, I keep seeing untagged frames coming in on my parent X0 interface.
Does anyone have any ideas about this?
I currently have 4 sub interfaces configured on X0, and one trunk port running from my switch to X0
The trunk config looks like this:
Name: gi1/0/1
Switchport: enable
Administrative Mode: general
Operational Mode: up
Access Mode VLAN: 71
Access Multicast TV VLAN: none
Trunking Native Mode VLAN: 4094 (Inactive)
Trunking VLANs Enabled: 70-73
2-69,74-4094 (Inactive)
General PVID: 71
General VLANs Enabled: 70-73
General Egress Tagged VLANs Enabled: 70-73
General Forbidden VLANs: none
General Ingress Filtering: enabled
General Acceptable Frame Type: all
General GVRP status: disabled
Customer Mode VLAN: none
Private-vlan promiscuous-association primary VLAN: none
Private-vlan promiscuous-association Secondary VLANs Enabled: none
Private-vlan host-association primary VLAN: none
Private-vlan host-association Secondary VLAN Enabled: none
DVA: disable
Classification rules:
Classification type Group ID VLAN ID
------------------- -------- -------
interface gigabitethernet1/0/1
switchport mode general
switchport general allowed vlan add 70-73 tagged
switchport access vlan 71
switchport general pvid 71
switchport trunk native vlan 4094
switchport trunk allowed vlan remove 1
Methodman85
7 Posts
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August 29th, 2013 11:00
Figured it out. The frames I was seeing on the sonicwall were spanning tree BPUs which are sent untagged to each port every 2 seconds by default once spanning tree is active. Once I turned off spanning tree on my trunk port the untagged frames stopped.
Methodman85
7 Posts
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August 29th, 2013 11:00
Figured it out. The frames I was seeing on the sonicwall were spanning tree BPUs which are sent untagged to each port every 2 seconds by default once spanning tree is active. Once I turned off spanning tree on my trunk port the untagged frames stopped.
Anonymous
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August 28th, 2013 14:00
Any traffic on sent on the native VLAN is going to be sent as untagged frames.
Methodman85
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August 28th, 2013 15:00
But shouldn't the dell switch tag all frames before sending them to the sonic wall? The sonic wall is doing the routing in this case btw.
Right now the only things plugged into the switch are two laptops.
Anonymous
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August 29th, 2013 07:00
A trunk/general connection both have a native VLAN associated with them. This native VLAN is used to receive and send untagged traffic. The other VLANs that you add to the trunk connection can be set to tagged. Are you wanting the two laptops traffic to be placed in a VLAN that is tagged across to the sonicwall? What is the configuration for the ports the laptops plug into?
Anonymous
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August 30th, 2013 06:00
That makes sense, thanks for keeping us updated on your findings.
Cheers