Migration from one location to another, or from an older pod design to a newer one, seems pretty simple: cut over the traffic and move on. In reality, it takes planning, extra configurations, and cooperation between all of the equipment owners/managers.
Stage one is to assemble the new network; whether in the same building or on the other side of the World, the new devices need to be accessible so that certain tasks can be completed.
In the preceding design, we see that we have similar designs on both sides. On the left-hand side, you have these:
- A routing device, possibly a Cisco GSR 12810, CRS 4-slot chassis, or even Cisco Catalyst 4500
- A firewall, possibly also from Cisco, Palo Alto Networks, or any other firewall vendor
- A load balancer, necessary to balance the traffic between multiple servers and the server hardware itself
On the right-hand side, we have positioned the Nexus 9000 series switches in both the edge router space and as the ToR. The rest of the devices...