I have an older Cisco 877 router, connected via ADSL to ISP #1. The router needs to be upgraded (Firmware etc) to support ADSL2+ and then connected to ISP #2 via ADSL2.
The router has a very specialised on demand VPN configuration to third party ASP. This configuration must be retained and preserved.
Project is completed when all connectivity tests with ASP are passing via ISP #2 connection at ADSL2 speeds.
Looking for certified Cisco engineer with experience.