ISDN Call to Nearest MPLS PE and HQ , redundancy test.
I've a situation where I've two ISDN call backup using 1 BRI for my branch connection. First, the call will go to a nearest MPLS node, if this is failed, its will call to a second dialer string to my HQ. (there is 2 router at HQ, one connected to MPLS (3800), and second for ISDN and VOIP call(3640)).
The problem occur when everytime the ISDN call to MPLS, everything are OK. Then, when I disconnect the isdn dial to MPLS ( so it will call to HQ ), I can't access HQ.
If at first I call HQ and then MPLS, everything ok. But if I call back HQ after MPLS call, it can't route. From HQ 3800 router, I can see the route keep on searching at MPLS cloud and back to HQ router (looping).
At branch, the routing are to BRI1/0 :-
ip route 188.8.131.52 255.0.0.0 BRI1/0
ip route 184.108.40.206 255.0.0.0 BRI1/0
ip unnumbered Loopback1
dialer string 123456
dialer string 789011
dialer load-threshold 1 either
isdn switch-type basic-net3
ppp authentication chap callin
ppp chap hostname xxxxx
ppp chap password xxxxx
ppp multilink load-threshold 1 either
**Both string configure at int BRI1/0, no int dialer used.
Re: ISDN Call to Nearest MPLS PE and HQ , redundancy test.
I suspect it is the problem of the routes at HQ will not show up as preferred. Can you show the routing tables at HQ GW in each cases ?
And will the floating static redistributed into the dynamic routing protocol and communicate to both routers (ISDN & 3800) at HQ ?
In your case, you use two floating static at two routers, you have to ensure when you learn the static route via dynamic routing protocol, the AD will be changed and not able to compare to the floating static.
Try to check the cost and fine tune the cost of both floating static.
If the problem still exists, please also provide the routing config. at both HQ routers.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
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Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.