Forum Discussion
ExpressRoute Gateway routing changes
I have an ExpressRoute Gateway that shows some route changes in the metrics. I'd like to see what routes changed, but I can't find them. I tried the "BGP route updates" query under Monitoring > ...
Would suggest making sure below:
- Correct Log Analytics Workspace
Ensure you're querying the correct workspace that your ExpressRoute Gateway is sending diagnostics to. - Diagnostics Settings Enabled
Verify that BGP route updates are enabled in the diagnostics settings for the ExpressRoute Gateway: - Go to the ExpressRoute Gateway in the Azure Portal
- Select Diagnostics settings
- Confirm that RouteTableSummary, RouteTable, and BGPRouteUpdates are selected
- Time Range Accuracy
Even if you're confident about the time range, try expanding it slightly. Sometimes logs are delayed or timestamped slightly off. - Query Scope
Make sure your query is scoped to the correct resource and workspace. You can try this Kusto query to see if anything shows up:
AzureDiagnostics
| where ResourceType == "VIRTUALNETWORKGATEWAYS"
| where Category == "BGPRouteUpdates"
| where TimeGenerated > ago(1d)
Thanks for the reply. I still can't seem to get a query to work. Everything looks to be setup. I am able to do a firewall query with "AZFWNetworkRule" but I don't get anything with "AzureDiagnostics". It always returns "No results found". I don't know if I've ever gotten "AzureDiagnostics" to return anything, so I'm trying to look more into that now.
