I have a tech startup environment where I'm replacing consumer-grade routers with enterprise-grade.
Now, they are asking if we can have dual ISPs to minimize downtime and any disruption.
- VLAN 70: 10.70.0.0/16 with 10.70.0.1 default gw
- VLAN 5: 10.2.10.0/24 with 10.2.10.1 default gw
- Mgmt VLAN is 70 where router has 10.70.0.2, layer 3 switch has 10.70.0.3, and so forth.
- Virtual-IP GW of 10.70.0.1 or iBGP?
Usually, I use GLBP with two Cisco routers for CEF load-balancing, but we are not sticking with Cisco this time. Shall I use VRRP between vendors or use BGP with our ISP gateway being iBGP neighbors with each other?
- Later on, we want hybrid cloud with AWS and it uses BGP that I'm eventually going to set a default route in OSPF for.
- Minimize CPU on routers
- We are very ARP Layer 2 loop prone due to multiple adapters on servers acting unexpectedly.
In the long run, which would provide simple yet effective HA and load balancing?