I have a friend who has a setup with two ISP's. They are running an insurance agency and are obliged to use an ISP from their insurance company. Problem with this ISP is that it is superslow (4Mbit) and it has many website and port restrictions.
I had made a setup for them in the past, where they would use a High Speed ISP for all their basic internet needs and everything that needed to be done on the insurance ISP was routed to the Insurance router.
Basically the setup was:
Router A (Cable Internet HIGH Speed ISP) : IP: 184.108.40.206/24 DHCP: ON Gateway
Router B (Insurance company ISP) IP: 220.127.116.11/24 DHCP: OFF
On router A, i've set up two routing rules for all trafic meant for the Insurance Isp networks which would be routed to the IP of Router B
This setup has worked great for many years.
But last fall they merged with another agency (same Insurance company though) and they changed office (actually they merged office with the other agency). They wanted to set up the same kind of network setup on this new location. There was already an office set up on this location with a router from the Insurance ISP. Insurance ISP Router at this office was set up 192.168.1.1/24.
They also had a couple of computers and printers setup with fixed ip's so instead of changing everything i disabled DHCP on the Insurance ISP router and changed the Router IP of the High Speed ISP. I've also adjusted routing tables to redirect all Insurance Ip traffic to 192.168.1.1.
So current setup is:
Router A (Cable Internet HIGH Speed ISP) : IP: 192.168.1.254/24 DHCP: ON Gateway
Router B (Insurance company ISP) IP: 192.168.1.1/24 DHCP: OFF
This works for a couple of days/weeks and then suddenly their network starts slowing down to a less than 1Mbit internet speed. If i do a full reset of both routers and attached switch i can get everything running again at full speed for a couple of days/weeks but then again after some time internet speed will fall back to unacceptable speed of less than 1Mbit. How come this worked flawlessly for many years at location1, but starts stalling at Location2 after just a couple of days/weeks?
Is there anything i can change at the setup for location B? (someone suggested me to put router A at 192.168.1.1 and put router B at a higher IP, but would this actually solve anything? I need to contact the insurance ISP to do this, since i have no access rights on their router, it was already quite a hassle to make them turn off DHCP, i'd rather not call them to adjust the router ip if it's not necessary)
EDIT: extra info
- model Cisco RV130
- (ip: 192.168.1.254, subnet 255.255.255.0, gateway)
- DHCP: ON (DHCP range 192.168.1.50 to 192.168.1.150)
- WAN port: connected to Consumer High Speed ISP modem
- LAN port 1: Connected to linkys switch LGS116 (unmanaged)
- LAN port 2: Connected to Router B
- No other lan ports are connected
following routes are set up:
- 172.31.0.0/16 to 192.168.1.1
- 18.104.22.168/19 to 192.168.1.1
- Model Cisco 891 (managed by insurance ISP)
- (ip: 192.168.1.1, subnet 255.255.255.0)
- DHCP: OFF
- Wan port: connected to Insurance ISP (4Mbit)
- LAN port 1 connected to Lan port 2 on Router A.
- No other lan ports are connected
Strange thing is that this setup worked for years at location1; But at location2 it doesn't, it only works for a few days/weeks.
Router B is the same model at both locations, but they are two different routers at both locations. Router A is the same router which we moved from location1 to location2. Swithch is also the same switch which we moved from location1 to location2. Location2 has some 4port desktop switches (Netgear GS105) in the office, which is different to location1.
What i meant with reset is a power cycle, and this brings back the network at full desired speed. For the moment, I was planning to do a nightly power cycle with a programmable power socket, but IMO that's not a real solution, more a bypass. I would like to know what's wrong here and why this worked without a problem at location1 for 3-4 years and now at location2 starts slowing down to unacceptable speed after some time (mostly at Friday noon)?
I have full admin rights on router A, router B is managed by the insurance company ISP.