Oh, wow! That would be bad if it shut down all of my other vlans on that interface. Fortunately it didn't. I tried doing the same thing but using the native/untagged vlan instead of translation but RPVST still shut it down. It's the strangest thing. I have a spare pair of fibers so I can just light that up for this vlan but it seems weird that I have to do that just to get this working
Original Message:
Sent: Mar 02, 2023 05:34 PM
From: parnassus
Subject: rpvst and vlan translation
Hi, if I read this sentence correctly: "A port with a VLAN translation configuration allows traffic only for the translated VLAN and the native VLAN; if it is
a member of more VLANS, it does not allow traffic for them." (see here at page 60) I understand that the 1/1/50 interface on the Aruba CX 6200F used as the uplink to the Aruba 5412R zl2 should be instead configured like:
interface 1/1/50no shutdownno routingvlan trunk native 1vlan trunk allowed 44vlan translate 1044 44exit
But, apart from the above detail, I'm pretty sure that your particular usage of RPVST between these two switches should be better addressed/explained.
Original Message:
Sent: Mar 02, 2023 04:17 PM
From: davidwk
Subject: rpvst and vlan translation
I have a 5412R connected to a 6200F in production and they're working great. I need to extend one of the vlans that exists on the 6200 through the 5412 but that would cause a vlan id collision so I'm doing vlan translation to change the vlan id as it leaves the 6200. The issue is that spanning tree shuts the vlan down on that link as soon as I configure it. The vlan in question is only tagged on a single port on the 5412 (the port that goes to the 6200) so I know there isn't a loop. How to I prevent spanning tree from shutting it down? Here's the relevant config for the 6200
CX-RFH(config-if)# show run curinterface 1/1/50 no shutdown no routing vlan trunk native 1 vlan trunk allowed 44,102,4016 vlan translate 1044 44 exitCX-RFH(config-if)# show run spanning-treespanning-tree mode rpvstspanning-treespanning-tree vlan 44,102
And here's the relevant config from the 5412
vlan 1044 name "rf2fields" tagged K3 no ip address exitspanning-treespanning-tree mode rapid-pvstspanning-tree vlan 1044
When everything is setup here's the spanning tree status from the 6200
CX-RFH(config)# show spanning-tree vlan 44VLAN44Spanning tree status : Enabled Protocol: RPVST Root ID Priority : 32768 MAC-Address: 44:5b:ed:27:8a:00 This bridge is the root Hello time(in seconds):2 Max Age(in seconds):20 Forward Delay(in seconds):15 Bridge ID Priority : 32768 MAC-Address: 44:5b:ed:27:8a:00 Hello time(in seconds):2 Max Age(in seconds):20 Forward Delay(in seconds):15Port Role State Cost Priority Type BPDU-Tx BPDU-Rx TCN-Tx TCN-Rx------------ -------------- ---------- -------------- ---------- ---------- ---------- ---------- ---------- ----------...1/1/50 Disabled Blocking 4 128 P2P 11220 0 0 0
And from the 5412
S-MILLER(vlan-1044)# show spanning-tree vlan 1044 Spanning Tree Information STP Enabled [No] : Yes Mode : RPVST Extended System ID : Enabled Ignore PVID Inconsistency : Disabled Switch MAC Address : f40343-164d00 VLAN ID : 1044 RPVST Enabled : Enabled Root MAC Address : f40343-164d00 Root Priority : 49,152 Root Path Cost : 0 Root Port : This switch is root Operational Hello Time (secs) : 2 Topology Change Count : 0 Time Since Last Change : 64 days Root Inconsistent Ports : Loop Inconsistent Ports : PVID Inconsistent Ports : K3 Designated Port Type Cost Priority Role State Bridge ----- ---------- --------- --------- ---------- ---------- ----------------- K3 SFP+LR 2000 128 Designated Blocking f40343-164d00
How do I get those ports to stop blocking?