Need an advise on BGP along with traffic engineering. We have a simple setup with two ISP links and we have done a simple BGP peering using eBGP with both the ISP's so that if one fails the other one takes over.
Now my question we need to do a further BGP peering with one of a customer who would need us to allocate few subnets and want to publish their subnet via peering. Also we have a new requirement of controlling the bandwidth allocated by per subnet or per IP address and also meter the data consumption.
What is the best way to achieve this? Any overall architecture recommendation along with hardware we might need for this. We also have the requirement to do any changes without any downtime.