I have a link to my headoffice in ADSL. I am using ADSL Modem having ADSL interface and Ethernet Interface. This Ethernet Interface is connected to Cisco 1841 Router. I want to backup this link using ISDN.
I have configured both Ethernet Interface and ISDN and it is working perfectly.
But ISDN link is not coming up when the primary links is down. Then i found that, even though the ADSL link is down the Ethernet remains up due to ADSL Modem is ON.
How i have to configure my router to dynamically detect the link failure and bring the ISDN up and make the ISDN down once the ADSL (Primary) link is up again
I'm guessing that you are currently routing towards the primary via a static route with the interface option?
If you run a routing protocol between the sites then the routing protocol will detect that the link has failed. You can then have a floating static (with a higher admin distance) pointing towards the ISDN interface.
If you decide to configure a routing protocol on the ISDN interface too then ensure that you configure snapshot routing or the OSPF demand circuit feature.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
Im studying the 100-105 book by Odom and am currently on the topic of Port security. I purchased a used 2960 and I'm trying to follow a...
While deploying a number of 18xx/2802/3802 model access points (APs), which run AP-COS as their operating platform. It can be observed on some occasions that while many of their access points were able to join the fabric WLC withou...