Can network VLAN be identified by a string rather than a number?












3














Can VLAN be identified by a string rather than a number?



My wifi router allows to configure VLAN that are named by string.
I'm trying to connected it to my Ubiquiti EdgeRouter but can't get it to work. See bellow what settings I can change:



Wifi router VLAN setup page










share|improve this question






















  • From your picture it looks as if you've got the default VLAN 1 (untagged) and VLAN 20 and 30. If would be rally weird if your router calls something "VLAN30" and would NOT use the VLAN-ID 30 for that VLAN.
    – Tonny
    yesterday
















3














Can VLAN be identified by a string rather than a number?



My wifi router allows to configure VLAN that are named by string.
I'm trying to connected it to my Ubiquiti EdgeRouter but can't get it to work. See bellow what settings I can change:



Wifi router VLAN setup page










share|improve this question






















  • From your picture it looks as if you've got the default VLAN 1 (untagged) and VLAN 20 and 30. If would be rally weird if your router calls something "VLAN30" and would NOT use the VLAN-ID 30 for that VLAN.
    – Tonny
    yesterday














3












3








3







Can VLAN be identified by a string rather than a number?



My wifi router allows to configure VLAN that are named by string.
I'm trying to connected it to my Ubiquiti EdgeRouter but can't get it to work. See bellow what settings I can change:



Wifi router VLAN setup page










share|improve this question













Can VLAN be identified by a string rather than a number?



My wifi router allows to configure VLAN that are named by string.
I'm trying to connected it to my Ubiquiti EdgeRouter but can't get it to work. See bellow what settings I can change:



Wifi router VLAN setup page







networking vlan






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked yesterday









Pat

253




253












  • From your picture it looks as if you've got the default VLAN 1 (untagged) and VLAN 20 and 30. If would be rally weird if your router calls something "VLAN30" and would NOT use the VLAN-ID 30 for that VLAN.
    – Tonny
    yesterday


















  • From your picture it looks as if you've got the default VLAN 1 (untagged) and VLAN 20 and 30. If would be rally weird if your router calls something "VLAN30" and would NOT use the VLAN-ID 30 for that VLAN.
    – Tonny
    yesterday
















From your picture it looks as if you've got the default VLAN 1 (untagged) and VLAN 20 and 30. If would be rally weird if your router calls something "VLAN30" and would NOT use the VLAN-ID 30 for that VLAN.
– Tonny
yesterday




From your picture it looks as if you've got the default VLAN 1 (untagged) and VLAN 20 and 30. If would be rally weird if your router calls something "VLAN30" and would NOT use the VLAN-ID 30 for that VLAN.
– Tonny
yesterday










1 Answer
1






active

oldest

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7














The VLAN tag in an Ethernet packet is a 12 bit interger, providing 4096 numbered values. There is no string identification in the packet.



Since management of VLANs via numbers only is a burden on human memory and thus error-prone, vendors have soon started to allow associating a descriptive name with the numerical tags to ease that burden - but these names are local either to each device or in the best case to a family of devices that share a configuration database. AFAIK there is no cross-vendor way to synchronize name-number tuples.



In order to get this to work cleanly, you would need to set up identical name-number mappings on both devices manually, then things should work as expected.






share|improve this answer





















  • Is there a way to detect the VLAN tag number coming from an interface?
    – Pat
    yesterday






  • 1




    @Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
    – Tonny
    yesterday











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1 Answer
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active

oldest

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1 Answer
1






active

oldest

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active

oldest

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active

oldest

votes









7














The VLAN tag in an Ethernet packet is a 12 bit interger, providing 4096 numbered values. There is no string identification in the packet.



Since management of VLANs via numbers only is a burden on human memory and thus error-prone, vendors have soon started to allow associating a descriptive name with the numerical tags to ease that burden - but these names are local either to each device or in the best case to a family of devices that share a configuration database. AFAIK there is no cross-vendor way to synchronize name-number tuples.



In order to get this to work cleanly, you would need to set up identical name-number mappings on both devices manually, then things should work as expected.






share|improve this answer





















  • Is there a way to detect the VLAN tag number coming from an interface?
    – Pat
    yesterday






  • 1




    @Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
    – Tonny
    yesterday
















7














The VLAN tag in an Ethernet packet is a 12 bit interger, providing 4096 numbered values. There is no string identification in the packet.



Since management of VLANs via numbers only is a burden on human memory and thus error-prone, vendors have soon started to allow associating a descriptive name with the numerical tags to ease that burden - but these names are local either to each device or in the best case to a family of devices that share a configuration database. AFAIK there is no cross-vendor way to synchronize name-number tuples.



In order to get this to work cleanly, you would need to set up identical name-number mappings on both devices manually, then things should work as expected.






share|improve this answer





















  • Is there a way to detect the VLAN tag number coming from an interface?
    – Pat
    yesterday






  • 1




    @Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
    – Tonny
    yesterday














7












7








7






The VLAN tag in an Ethernet packet is a 12 bit interger, providing 4096 numbered values. There is no string identification in the packet.



Since management of VLANs via numbers only is a burden on human memory and thus error-prone, vendors have soon started to allow associating a descriptive name with the numerical tags to ease that burden - but these names are local either to each device or in the best case to a family of devices that share a configuration database. AFAIK there is no cross-vendor way to synchronize name-number tuples.



In order to get this to work cleanly, you would need to set up identical name-number mappings on both devices manually, then things should work as expected.






share|improve this answer












The VLAN tag in an Ethernet packet is a 12 bit interger, providing 4096 numbered values. There is no string identification in the packet.



Since management of VLANs via numbers only is a burden on human memory and thus error-prone, vendors have soon started to allow associating a descriptive name with the numerical tags to ease that burden - but these names are local either to each device or in the best case to a family of devices that share a configuration database. AFAIK there is no cross-vendor way to synchronize name-number tuples.



In order to get this to work cleanly, you would need to set up identical name-number mappings on both devices manually, then things should work as expected.







share|improve this answer












share|improve this answer



share|improve this answer










answered yesterday









Eugen Rieck

9,84222127




9,84222127












  • Is there a way to detect the VLAN tag number coming from an interface?
    – Pat
    yesterday






  • 1




    @Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
    – Tonny
    yesterday


















  • Is there a way to detect the VLAN tag number coming from an interface?
    – Pat
    yesterday






  • 1




    @Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
    – Tonny
    yesterday
















Is there a way to detect the VLAN tag number coming from an interface?
– Pat
yesterday




Is there a way to detect the VLAN tag number coming from an interface?
– Pat
yesterday




1




1




@Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
– Tonny
yesterday




@Pat You need to capture a (small) sample of the traffic with WireShark or similar software. This will show you what really is send across the line, including the VLAN tags. As soon as you know the VLAN number your router sends out you can create the appropriate VLAN in the EdgeRouter.
– Tonny
yesterday


















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