5 ms·

IIRC, the Unifi stuff as well as Meraki will do multiple ISPs. They do outbound NAT, and have a liveness check which is just a ping sent to the next hop. Ping

IIRC, the Unifi stuff as well as Meraki will do multiple ISPs. They do outbound NAT, and have a liveness check which is just a ping sent to the next hop. Ping fails, or the interface goes down and the device simply sends the traffic the other direction. Any established TCP sessions simply fail, but any new traffic will failover just fine. I'm using this setup in my office. Easier than finding a last-mile type ISP that supports BGP.

isostatic 8y ago
If you use the same ISP you can probably get a routing working. But you're not going to get your own AS for a home network, even if you find an appropate ISP to provide you transit. Next hop checking isn't always good enough. I had a 7 minute outage on one line last week, next hop was fine, but outside the ISP network it all fell apart.
- jlgaddis 8y ago
  > But you're not going to get your own AS for a home network, even if you find an appropate ISP to provide you transit. ARIN, at least, will happily assign you an ASN assuming you 1) meet the multi-homing requirements and 2) pay the bill for it.
  - isostatic 8y ago
    Presumably the requirement includes having a couple of ISPs advertising your IP space, which I assume means having a /24. Can you still get those easily from ARIN?
    - namibj 8y ago
      The European version of ARIN allows IPv6-only networks. /24 cost you about 3-6k$ each, depending on if you can spare a month to get a good price or need it announced tomorrow morning for your AS.
- halbritt 8y ago
  Then set the liveness check for something further upstream of the ISP. Getting an AS is easy. Getting portable IPv4 address space or an LOA to readvertise is more tricky.
  - lmm 8y ago
    Here in the UK I found you couldn't get an AS number without a VAT number (i.e. being a company). (Of course, you can start your own company for something like 13 quid/year. Now that I have one maybe I should revisit that.)
    - isostatic 8y ago
      Last time I talked to an WISP they were trying to get an AS number, they had a /21, but were still struggling. Seems like a lot of effort to ensure your ssh session doesn't drop
voltagex_ 8y ago
Do you have any idea how the "upstream port" detection works on Unifi gear? While I'm waiting for the piece of Unifi kit that does PPPoE and DHCP, I've got their switch plugged into my old router - straight away the switch was able to work out that this was a WAN connection and none of my other traffic gets routed through that. To set the same thing up on LEDE took hours.
- deleted 8y ago
  [deleted]

isostatic 8y ago

If you use the same ISP you can probably get a routing working. But you're not going to get your own AS for a home network, even if you find an appropate ISP to provide you transit. Next hop checking isn't always good enough. I had a 7 minute outage on one line last week, next hop was fine, but outside the ISP network it all fell apart.

jlgaddis 8y ago
> But you're not going to get your own AS for a home network, even if you find an appropate ISP to provide you transit. ARIN, at least, will happily assign you an ASN assuming you 1) meet the multi-homing requirements and 2) pay the bill for it.
- isostatic 8y ago
  Presumably the requirement includes having a couple of ISPs advertising your IP space, which I assume means having a /24. Can you still get those easily from ARIN?
  - namibj 8y ago
    The European version of ARIN allows IPv6-only networks. /24 cost you about 3-6k$ each, depending on if you can spare a month to get a good price or need it announced tomorrow morning for your AS.
halbritt 8y ago
Then set the liveness check for something further upstream of the ISP. Getting an AS is easy. Getting portable IPv4 address space or an LOA to readvertise is more tricky.
- lmm 8y ago
  Here in the UK I found you couldn't get an AS number without a VAT number (i.e. being a company). (Of course, you can start your own company for something like 13 quid/year. Now that I have one maybe I should revisit that.)
  - isostatic 8y ago
    Last time I talked to an WISP they were trying to get an AS number, they had a /21, but were still struggling. Seems like a lot of effort to ensure your ssh session doesn't drop

voltagex_ 8y ago

Do you have any idea how the "upstream port" detection works on Unifi gear? While I'm waiting for the piece of Unifi kit that does PPPoE and DHCP, I've got their switch plugged into my old router - straight away the switch was able to work out that this was a WAN connection and none of my other traffic gets routed through that. To set the same thing up on LEDE took hours.

deleted 8y ago
[deleted]