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Author Topic: As dead as a brick  (Read 5123 times)

Weaver

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As dead as a brick
« on: December 31, 2022, 04:00:05 AM »
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tubaman

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Re: As dead as a brick
« Reply #1 on: December 31, 2022, 08:03:58 AM »
The most likely cause of failure of your Firebrick is the power supply and that is probably repairable if you know someone who could do it. Failed electrolytic capacitors would be my guess. As for lightening protection of devices I'd say that the only sure form of protection is complete disconnection when storms threaten. Your Zyxel switch may offer some protection for the most minor of events but for anything more I rather doubt it'll make a lot of difference unfortunately.
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BT FTTC 55/10 Huawei Cab - Zyxel VMG1312-B10A > BT 'Smart' Hub 2

vic0239

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Re: As dead as a brick
« Reply #2 on: December 31, 2022, 08:11:38 AM »
When my FB2700 died the power supply was the culprit. It's a self-contained unit so was very easy to swap out and A&A sent a replacement immediately. Hopefully your FB2900 will be the same.  :fingers:
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Lothian Broadband 300/300 + AAISP VDSL, Firebrick FB2900, MikroTik rb260gsp, ZyXel NWA50AX WiFi AP.

burakkucat

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Re: As dead as a brick
« Reply #3 on: December 31, 2022, 05:21:28 PM »
Quote from: Weaver on December 31, 2022, 04:00:05 AM
It seems that my router, the Firebrick FB2900 has died. RIP.

  :o 
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Weaver

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Re: As dead as a brick
« Reply #4 on: December 31, 2022, 05:52:22 PM »
Has anyone ever used VRRP ?
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dee.jay

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Re: As dead as a brick
« Reply #5 on: December 31, 2022, 05:59:38 PM »
Yes, use it all the time - not seen it on consumer gear but I think the FB is aimed higher than that.

In Enterprise/DC networks it is used widely in VLAN's to protect against router/firewall failure. VRRP is an industry standard so is widely understood. The way it works is that your two devices agree on the IP that is to be shared, and they have a standby IP when they are not the "master" device. VRRP is active/standby routing where an election takes place to decide who is the master device for that subnet, and they adopt the virtual IP and answer replies for it.

The other devices monitor the master and if there is some error in the master then a re-election occurs and another device takes over. This of course is all transparent to all the end devices depending on that as their gateway.
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routed by opnsense on proxmox. Even my WiFi is baller

Weaver

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Re: As dead as a brick
« Reply #6 on: December 31, 2022, 10:29:03 PM »
« Last Edit: December 31, 2022, 10:45:57 PM by Weaver »
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burakkucat

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Re: As dead as a brick
« Reply #7 on: December 31, 2022, 11:25:40 PM »
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Weaver

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Re: As dead as a brick
« Reply #8 on: January 01, 2023, 03:38:55 AM »
Ah, of course, I forgot the SFP slot.
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burakkucat

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Re: As dead as a brick
« Reply #9 on: January 01, 2023, 04:27:27 PM »
Quote from: Weaver on January 01, 2023, 03:38:55 AM
Ah, of course, I forgot the SFP slot.

  :)

Item number three on my list, above, needs to be as cheap as possible and readily available . . . just in case there is a big zap that takes out both VMG1312-B10As and the media converter (plus the SFP optic).
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Weaver

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Re: As dead as a brick
« Reply #10 on: January 01, 2023, 05:46:45 PM »
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burakkucat

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Re: As dead as a brick
« Reply #11 on: January 01, 2023, 07:36:26 PM »
Notice that my list has removed the small switch (Mux/Demux) replacing it with the managed media converter.
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meritez

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Re: As dead as a brick
« Reply #12 on: January 02, 2023, 12:02:38 AM »
@Weaver do you want a few Mikrotik to replace the fb2900 with?

https://www.ebay.co.uk/itm/266031098588

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aesmith

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Re: As dead as a brick
« Reply #13 on: January 02, 2023, 08:22:22 AM »
Quote from: Weaver on December 31, 2022, 05:52:22 PM
Has anyone ever used VRRP ?
I've only ever used HSRP originally because it predated VRRP and latterly because of the specific enhancements in the Nexus switches.  Also, I suppose inertia and lack of any perceived reason to do otherwise.

However I think the principle is the same, and I can't see how it could work without doing something on the PPPoE side as well. VRRP virtualises a LAN IP address only, not the whole router/firewall.  Behind that LAN address the two devices will each be autonomous and working independently so if configured for PPPoE they'll both be trying to talk to the modems. You'd need something to synchronise it so that the device that's VRRP active on the LAN is the only one active on PPPoE.

Could that be done in the Firebrick with events and a triggered script? PPPoE stays shutdown, but a script triggered by VRRP becoming active enables it?
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Weaver

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Re: As dead as a brick
« Reply #14 on: January 02, 2023, 08:32:20 PM »
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