Ok so I often come across clients that have a terminal service hosted at their main office, and have multiple branch offices connecting to it.
Obviously if something goes wrong in the main office all the branches shutdown, what I would like to do is create a solution that can either provide multiple links for increased bandwidth or simply a backup link.
Since our clients are super cheap we are stuck with 877s, however I am trying to sell them a 1900 with either ADSL/ADSL or ADSL/3G
My current plan if we can not sell the 1900 is to use the 877s and attach a 3G router to a Fast Ethernet port, however my question is how can I tell the router to automatically use this link when its dialer interface fails.
Sorry for the mess of a post, having a huge head ache at the moment but to sum up the questions;
- Can I use the Fe ports on the 877 as a second WAN port (separating the ports by VLANs etc)
- If a client buys a 1900 with 2xADSL links is it possible to combine the links? (I use Tunnel IPSEC interfaces and want these to run over the combined links)
- With a SVTI (IPSEC) if a link fails from ADSL to 3G the source IP will change, is there a way to set this to change when the primary WAN fails?
- Is there anyway to add a extra layer of redundancy to the router its self?