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About ID_IT_Dept
ID_IT_Dept
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Member since Dec 6, 2021
Dec 6 2021
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Dec 6 2021
12:22 PM
Thank you for the info @Ryan_Miles . I will work with support to continue to troubleshoot this.
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Dec 6 2021
11:42 AM
Hi @Ryan_Miles, Yes the duration was longer than 5 minutes (closer to 15 before anyone noticed the internet was down). Can you tell me what the criteria is that the appliance looks for to decide to failover, and if there are any settings that can be adjusted for sensitivity? I'm used to working with command line devices like ASAs where you can setup a heartbeat to check for actual internet connectivity, then take appropriate action after a certain number of missed heartbeat pings. Other than having an active SIM card in the MX appliance as a backup, I didn't see any actual settings within the MX to tweak convergence sensitivity or the criteria that is being used to determine when the WAN goes down. If the cable is pulled, the connection fails over immediately, but as mentioned, layer 1 is not a true indicator of the WAN being down. What actually happens behind the scenes from a protocol standpoint? Is it similar to VRRP/HSRP? I reached out to support in parallel, but just wanted to post the question here as well, as I assume there are others that have cellular backup in place. Just curious what other folks have experienced and if there may be an option that I am not aware of to tune the settings a bit.
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Dec 6 2021
9:57 AM
I have active SIM cards in all my MX67C appliances, to act as internet backup if my wired WAN internet service goes down. My assumption is that if the wired WAN goes down, the device should automatically failover to the cellular internet service. The only way I've been able to get the failover to work is to physically unplug the wired WAN ethernet cable, or disable the port. It seems the 'trigger' for the cellular backup to kick-in is a loss of layer 1 on the wired WAN port. In most cases, when the wired internet service goes down, the layer 1 connection is still intact between the MX67C and the ISP router, so the MX 'thinks' the connection is still active and does not fail over to the cellular service. Is anyone aware of a way to setup a heartbeat ping to something on the internet or another 'logical' way for the MX to verify wired WAN internet service? I need the failover to be triggered by something at the layer 2 or 3 level. Having to have someone physically unplug the cable is a nuisance, and administratively disabling the WAN port is dangerous, as I would have no way to get back into the appliance if the cellular backup did not come online. Also - I do NOT want to run the two WAN connections in an active/active or load balancing config, as I pay by the GB when the cellular connection is active. I only want the cellular service to come on if the primary wired WAN connection fails.
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