Dialup connection sporatically dials

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I have two sites linked together via microwave with dialup as backup solution. I have an IP SLA monitoring the main link and activates the dialup when the link goes down.
Well, my problem is that the SLA errorously sees the main link go down and kicks in the dialup. BUT just for a few seconds and once it sees the main link up it, of course, drops the dialup.
On both ends, I have increase the timeout from 1000 to 10000 and changed the frequency to 51. Hoping that prohibit the dialup. But it hasn’t.
I have added the SLA config for your reference.
This is the far-end RTR
ip sla monitor 11
type echo protocol ipIcmpEcho 10.30.12.2
timeout 10000
threshold 4
frequency 51
ip sla monitor schedule 11 life forever start-time now
this is the central RTR
ip sla monitor 12
type echo protocol ipIcmpEcho 10.30.51.254
timeout 10000
threshold 4
frequency 51
ip sla monitor schedule 12 life forever start-time now
I think I need to change the SLA statement but I’m not sure.
Thanks, Gary

Hi Gary
Can you tell me what is the ip which you are monitoring using sla? (10.30.12.2 / 10.30.251.54).
Also can you post the output of show run/show log/show ip route here
regds

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com.apple.internetconnect.plist (a file)
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Solved!
Go to Solution.

Update
The DHCP Server "disabled" setting doesn't stick, it returns to "enable" when returning to the configuartion settings tab, for whatever reason.
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The USB Adapter has not been configured to work with the computer that will be networked. Currently, I plugged it into the computer with the Linksys router to quickly give you all the information I have for the ipconfig /all
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Microsoft Windows XP [Version 5.1.2600]
Windows IP Configuration
        Host Name . . . . . . . . . . . . : XXXXXXX
        Primary Dns Suffix . . . . . . . :
        Node Type . . . . . . . . . . . . : Hybrid
        IP Routing Enabled. . . . . . . . : Yes
        WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Wireless Network Connection:
        Connection-specific DNS Suffix . :
        Description . . . . . . . . . . . : 802.11n USB Wireless LAN Card
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        Dhcp Enabled. . . . . . . . . . . : Yes
        Autoconfiguration Enabled . . . . : Yes
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