Removal of VLAN Tag on SG300.

Hi all, tried searching but I am unable to find a specific answer to my question.

I'm testing some equipment at the present time, the basic configuration is a software tester on laptop connects via ethernet on Board of our HAD. Some data must pass through our ESE and reach a second device. Tagged data flows from the laptop to the ESA. I have two switches SG300-10 which is given to me.

These tests require test data to be S - tag only; 802.1ad 0x88A8 Ethertype with my choice of VID (100). There is no C - Tag (0 x 8100), unusual, I know! However my second device cannot manage the VLAN, so I need to remove the label.

Previous test required only the C - tag data, and I managed to remove the labels quite easily by connecting the DUT for the switch port 10, second device with port 10 bridge interface and tagged VLAN 100 the value member and port 9 and 10 port access VLAN 100 interface.

I tried different combinations of setting port 10 customer/general/trunk interfaces but were unable to remove the tags out of port 9. I was able to capture the images desired on port 9 straight, but they are of course marked. I'm working on the presumption that the SG300 can remove S - Tags on output.

The device to port 9 has need of answering queries ARP with a specific MAC address and the response on the same VLAN, which would switch to add to the ARP response. I don't know if this is possible, but perhaps I could replace this device with the second switch if it would respond to ARP on one VLAN only S-Tag.

I would appreciate any pointers that everyone has!

An access port on the SG300 facing the marked port of the remote site has to accomplish this. Handling tag always happens generally during penetration.

Tags: Cisco Support

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