I currently have a Location that has a DS3 terminated into a 7206VXR Router. We are currently experiencing over 90% Utilization on the DS3 Interface during Peak Periods. As our Fiber buildout to the Site is over 3-6 Months away we are trying to put a Band-Aid on the Bandwidth till then. Our only Cost Effectivie Solution is to feed the Site with another 20 megs via another Ethernet drop-off to the 7206VXR.
What is the Best Case Practice or Solution to either Load Balance or Combine the Bandwidth so I don't have to break up the Network. If I did have to break up the Network I would like to have Redundency between both the Serial Interface and the Ethernet Interface in case one of them goes down. Here below is the Current Interfaces for each Bandwidth Leg. Currently we are just routing out the Serial1/0 (DS3 Interface) for all Customers.
interface Serial1/0 (Full DS3 Interface)
ip address 18.104.22.168 255.255.255.252
ip nat outside
dsu bandwidth 44210
serial restart-delay 0
interface GigabitEthernet0/2 (20 Meg Bandwidth via 100 meg Copper physical Link)
ip address 22.214.171.124 255.255.255.252
The Network consists of about 3 VLAN's (Management, Private IP Pool, Public IP Pool) that we use for our DSLAM Boxes to provide Customer Internet and Management of the DSLAM Devices.
The Solution that I have used in the past is to add (2) IP Routes as you see below:
ip route 0.0.0.0 0.0.0.0 126.96.36.199
ip route 0.0.0.0 0.0.0.0 188.8.131.52
My concern for this way is that I do have Equal Cost Paths for this Solution. Again one is a 45 meg link (184.108.40.206) and the other one is 20 meg link (220.127.116.11) ..
What is the Best way to implement my 20 Meg link into the Equation so I can utilize the Bandwidth without Overloading it before my 45 meg link.
Any Help or Suggestions ?