I was changing the bandwidth numbers in our QOS service policies to increase the amount of bandwidth for video conferencing. Out of a dozen remote routers, this went just fine for ten of them. But on a couple of them, when I made the change, EIGRP lost adjacency across the WAN and had to reconverge - which only took a few seconds.
Not only did I increase the bandwidth amount in the video class, but I renamed the policy map, which caused me to remove it from the WAN interface an re-apply it with the new name. Here is the policy map and interface service policy:
shape average 99920000
All the remote WAN routers are connected into a Metropolitan Optical Ethernet backbone, and all WAN interfaces on the WAN routers are 100MB ethernet.
Is there supposed a brief outage when a change is made to QOS policy parameters, or when service policies are removed and re-applied to interfaces? Should I expect enough outage that EIGRP could be affected?