Apologies - This isn’t a question, and I can’t change it to a conversation -
With recent changes in our NAC servers, we needed to check that our ‘ip helper-addresses’ were consistent to our regional standards. This is something we usually did with Python, but here’s a simple script to grab the helpers on each of the interfaces. I got the script working, but had some formatting issues, and thankfully a colleague was able to use some logic to format (@danny,Ramirez) via this statement:
let ips = (foreach ip in ServerIP where match.data.IntName == ip.data.IntName select distinct toString(ip.data.helper))
Ideally, we would would define the NAC servers per region, and export them as a check, but I haven’t gotten there yet ;-)
pattern = ```
interface {IntName:string}
ip helper-address {helper:ipv4Address}
```;
foreach device in network.devices
// Feel free to trim the scope with a where
// where "Branch" in device.tagNames && "Core" in device.tagNames && "C9500" in device.tagNames
let outputs = device.outputs
foreach command in outputs.commands
where command.commandType == CommandType.CONFIG
let parsed = parseConfigBlocks(OS.IOS_XE , command.response)
foreach match in blockMatches(parsed, pattern)
let ServerIP = blockMatches(device.files.config, pattern)
// Thanks Danny !
let ips = (foreach ip in ServerIP where match.data.IntName == ip.data.IntName select distinct toString(ip.data.helper))
select distinct{
Hostname:device.name,
Intf:match.data.IntName,
Helpers:ips,
Tag: device.tagNames
}
resulting in a list of device interfaces and the helpers:
![](https://uploads-us-west-2.insided.com/forwardnetworks-us/attachment/4626d380-95ab-4e6a-a3a8-28917266939a.png)