Hi all, i want to buy a DCS-7050SX-64-R switch but i need to know if i can do this operation:
I receive some QinQ packet where i can’t configure the outer S-Vlan tag, i need to connect it on our core where i’ve a lot of vlan in use. So, i need to rewrite the Service Vlan tag (only the outer tag) and send the packet to another trunk port that i use as an uplink to our core switch.
For example, port 1 is connected to the operator that send QinQ packet, and receive S-vlan 100, 200, 300.
Can you tell me if 7050 platform can rewrite outer tag ?
Thanks to all
You could use VLAN translation for the rewrite of the outer tag in the packet.This can be configured on the DCS-7050SX-64. More details about the command can be found here :
As an example, we could consider the scenario where the ingress port on the 7050SX device is et1 and the incoming packet is double tagged with an outer-tag ( s-vlan) of 100 and inner tag (c-vlan) of 10. The translation command in place at the incoming interface to rewrite the svlan tag to 1000 would be :
The packet would then be bridged as part of vlan 1000 and egress out of any of the member ports of vlan 1000 as configured.
#show vlan 1000
VLAN Name Status Ports
In the above case , we have configured the egress port(et2) as a trunk port which allows the translated vlan. The trunk port configuration would add the vlan tag 1000 :
The packet received on your core device would now have an outer-tag ( s-vlan) of 1000 and inner tag (c-vlan) of 10.
We did test the configuration mentioned previously on the DCS-7050SX-64 and can confirm that vlan translation works on double tagged packets.
Regarding any limitations w.r.t the vlan translation per port, since they would vary across platforms, we would request you to reach out to our sales team at email@example.com and they would be able to help you with the information.
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