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Forum Discussion
re: VLAN Default vs Native Vlan 108v3 / 7224
Hi, Can someone here kindly explain and share clear examples on how to setup Native Vlans on 1 switch. For example we have a 24 port switch, we want to create 2 vlans vlan 10 and vlan 20 4...
joelp1212 wrote:Can you clarify the meaning of clearing ports 1 thru 5 on Vlan i.e setting the U or T to blank. For example ports 1 thru 5 are in (vlan 10) and these ports are set to U. Port 6 is set to T. PVID 10 for ports 1 thru 5. Why must we go back to vlan 1 members and set ports 1 thru 5 to blank? What is the purpose of setting it to blank? what happens if we leave it as U instead?
You only want to allow a port to be in the single VLAN you want it to be. You configure 1..5 as an access port type VLAN 10 [u]ntagged, PVID 10. And nothing else. You don't want to see any traffic from VLAN 1 - that's why you have to remove it.
Anything else goes into the area of asymmetric VLAN configuration - something you don't wnat to deal with.
joelp1212 wrote:Also for native vlans the lab scenario we have is TWO gsm7224/v2 switches.
Example: SW1 (vlan10 U) <----(T) is on port 6 ---> SW2 (vlan 10 U) Ports 1 - 5 vlan10
i don't fully understand your notation. For the connection between the switches, the so called trunk port, you use a trunk and configure [T]agged on both ends.
This will create a single network (aka. broadcast domain) on VLAN 10). The PC can communicate, the trunk will run the VLAN 10 traffic tagged, and nothing else:
- PC1 on SW1, SW1 Port X, VLAN 10 U, PVD 10 (only, an nothing else) (Access Port VLAN10)
- Link to SW2, SW1 Port Y, VLAN 10 T, PVID whatever (can be any "catch all" dummy VLAN ID, no other [U] VLAN membership), trunk port
- Link to SW1, SW2 Port A, VLAN 10 T, PVID whatever (can be any "catch all" dummy VLAN ID, no other [U] VLAN membership), trunk port
- PC2 on SW2 Port X VLAN 10 U, PVD 10 (only, an nothing else) (Access Port VLAN10)
This works the same on any Netgear Smat managed Plus/Pro/managed switch.
joelp1212 wrote:What happens if we connect PC1 to port 18 on SW1 and ping PC2 on port 22 on SW2. will this work because ports 18 and 22 but are not part of any vlans?
Talking of the switch in it's default configuration? VLAN 1 is also a VLAN, by default all ports on both switches are configured for VLAN 1 [u]ntagged, PVID 1. A cable can connect two default config ports on the two switches. Your two switches will run like a non-managed switch out of the box.
As for the Management Vlan 1 Is this management vlan 1 for web access into the switch? if so what happens if we want two vlans to access management then such as vlan 10 and vlan 20 ?
Although this may seem redundant with PVID and VLAN Memberships, its kind of strange example: you first Create a Vlan 10, then go to VLAN 10 members, add the ports 1 thru 5 set it to U. Then you go into PVID again set 1 - 5 as 10. what does PVID do in this instance?
Netgear dos not differentiate Access and Trunk Ports.
They allow "free" config, including asymmetric VLANs. When you set a port to VLAN 10 and Access Port, the switch does make it untagged for the VLAN 10, remove any other VLAN assignments, and sets the PVID to 10 (indicating incoming frames on this port have to go to the VlAN 10).
- The port setting as [U] for VLAN 10 does tell the switch that frames form this network (VLAN 10) will be sent to the port.
- The PIVD 10 does tell the switch to put incoming frames to the VLAN 10.
Because of the lack of the access port mode, you have to remove any other U or T from the same port.
Now this port is an access port.
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