Black Box TS255A Specifications download pdf (Page 58)

VLAN tags not visible at the analyzer

Chapter 5 FAQ and Troubleshooting

rev. 1

VLAN tags not visible at the analyzer

All TAPs pass VLAN tags with the packets. If you are not seeing the

VLAN tags at the analyzer, check the following:

 On the switch:

 Confirm that the SPAN was created to pass VLAN tags.

Sometimes SPANs are created and passing VLAN tags is

not enabled.

 Confirm the communication between the switch and the

router is passing the VLAN tags (normally the

communication between them is not a trunk).

 On a GigaStor, if you are using one:

 Confirm the Gen2 capture card has been enabled to

receive or pass VLAN tags.

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Black Box TS255A Specifications Page 58