Hello,
I look for the most cost-effective solution for our company's single small office to route traffic across two WAN links with the following characteristics:
- ISP1: DSL
- ISP2: LTE
- The LTE link has a higher throughput (thanks to the great DSL coverage in Germany) but is also more expensive.
- I want traffic to go through ISP1 until its bandwidth is 90% used. The router should detect that the link is fully utilized and route new traffic through ISP2 until ISP1 link is underutilized again, i.e. traffic should be balanced back if a connection is long-lasting.
- The solution should be capable of routing approx. 75 MBit/s (throughput/bandwidth requirement).
- I want a single router to do all the work. That is, MC and BR should be one device if possible.
I looked at the following two approaches:
- (a) PfRv2
- (b) PfRv3
I noticed that (a) is cheaper since there are more devices supporting PfRv2, but I guess that the PfRv2 technology is not fast enough for my requirements. As described in the docs [1][2] the min. monitor-period is 60s and load-interval is 30s. That looks too high for me to shift traffic almost in real-time from ISP2 to ISP1. I want to keep utilization of ISP2 link as low as possible whilst allowing traffic bursts to use ISP2. My questions are thus:
[1] Is it possible to solve this scenario by using PfRv3?
[2] Is it possible to configure PfRv3 on a single device? If yes, what is the most cost-effective solution for a small office which does not have any requirements towards high availability etc. Do I really need an ISP 4000 series appliance? Is there a virtual solution?
Thanks for any ideas and thoughts on this issue. =)
References
[1] https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/oer/command/oer-cr-book/oer-h1.html
[2] https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/oer/configuration/12-2sx/oer-12-2sx-book/oer-profile.html
