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March 22nd, 2023 08:00
S5048 VLT as default gateway
Hello,
I'm testing two DELL S5048F with VLT and peer routing. I have a doubt regarding the primary node failure.
sw-core1 is the primary node, sw-core2 is the backup node
sw-core1 is the default gateway for the devices inside VLAN 40 and VLAN 50.
When both switches are powered on PC on VLAN 40 can ping the PC on VLAN 50
When one switche are powered off (failure scenario) PC on VLAN 40 can ping the PC on VLAN 50 as expected.
If during a failure scenarion of the primary node (sw-core1 powered down) I reboot the backup node (sw-core2) after the reboot I cannot ping the PC.
Is this a correct behavior or I'm missing something?
This is the configuration implemented simulated with OS10, in the physical switches I have OS9
Thank you.
Regards
DELL-Chris H
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March 22nd, 2023 12:00
Sytec,
I am not certain, based on the limited details, what could be the cause. Yet I feel like it should keep working after the reboot and likely something isn't configured right, and it probably will never happen in the real world.
What I would suggest is uploading the results of show tech-support to upload. dell. com and then private message me the svc tag used to upload it with. I can see if anything stands out to identify the cause, but I would recommend instead that you call in to support, so they can work directly with you to diagnose the cause.
Let me know if this helps.
Sytec
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March 23rd, 2023 00:00
Hi Chris,
I will call the support.
I'm thinking this is a normal behavior. Powering on the devices from scratch sw-core2 cannot know the existence on sw-core1 and the relative IPs assigned to his interfaces.
VRRP and SVI can work also in the failure scenario.
I know that in normal production this condition should never happen, but in case of primary node failure, a simple power outage cauded by a thunderstorm can shut down the backup node. This risk must be considered.