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Expert knowledge for Azure ExpressRoute development including troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment.
Passed 16 of 19 test cases with the skill, and 18 of 19 without it.
1 fixed18 passed either way0 still failing4 broke
Tokens, turns and time describe resource use, not a dollar price.
This benchmark measured an earlier version of the skill.
A newer attempt on gemini-3.6-flash on 10/9/2026 did not produce a publishable comparison (error dominated). The snapshot above is the previously measured run.
A test case the skill fixed. Same model, same prompt, with and without the skill.
We want to influence routing within Azure's virtual networks and WAN by tagging our on-premises BGP route advertisements with specific routing intent values supported by Azure ExpressRoute. Which BGP feature allows configuring custom values on private peering?
| Checked | Without skill | With skill |
|---|---|---|
| Custom BGP communities | Missed | Passed |
The instructions your model reads when the skill loads.
This skill provides expert guidance for Azure ExpressRoute. Covers troubleshooting, best practices, decision making, architecture & design patterns, limits & quotas, security, configuration, integrations & coding patterns, and deployment. It combines local quick-reference content with remote documentation fetching capabilities.
IMPORTANT for Agent: Use the Category Index below to locate relevant sections. For categories with line ranges (e.g.,
L35-L120), useread_filewith the specified lines. For categories with file links (e.g.,[security.md](security.md)), useread_fileon the linked reference file
IMPORTANT for Agent: If
metadata.generated_atis more than 3 months old, suggest the user pull the latest version from the repository. Ifmcp_microsoftdocstools are not available, suggest the user install it: Installation Guide
This skill requires network access to fetch documentation content:
mcp_microsoftdocs:microsoft_docs_fetch with query string from=learn-agent-skill. Returns Markdown.fetch_webpage with query string from=learn-agent-skill&accept=text/markdown. Returns Markdown.| Category | Lines | Description |
|---|---|---|
| Troubleshooting | L37-L42 | Troubleshooting ExpressRoute resiliency and asymmetric routing issues, plus FAQs on connectivity models, supported services, bandwidth, and pricing to resolve design or outage-related questions. |
| Best Practices | L43-L53 | Best practices for ExpressRoute capacity planning, QoS, BGP communities, gateway hardware migration, and validating resiliency via gateway and circuit failover testing. |
| Decision Making | L54-L62 | Guidance on choosing and configuring ExpressRoute gateways, SKUs, resiliency/topology options, VNet connectivity patterns, and planning/managing ExpressRoute-related costs. |
| Architecture & Design Patterns | L63-L74 | Designing resilient, highly available ExpressRoute architectures, including DR patterns, multi-circuit routing/Global Reach, VPN coexistence and failover, and using Microsoft peering for PSTN. |
| Limits & Quotas | L75-L83 | ExpressRoute limits on bandwidth, routes, gateways, FastPath, provider rate limiting, plus monitoring and FAQs to avoid hitting connectivity and quota constraints. |
| Security | L84-L92 | Encryption and security for ExpressRoute: IPsec/MACsec setup, NAT requirements, RBAC roles/permissions, and applying network security controls to private circuits. |
| Configuration | L93-L121 | Configuring ExpressRoute circuits, gateways, routing/peering, BGP (incl. IPv6, communities, BFD), NAT, monitoring, resiliency, and coexistence with VPN using portal, CLI, and PowerShell |
| Integrations & Coding Patterns | L122-L129 | Configuring and automating ExpressRoute circuits and connectivity, including Azure CLI management, NAT setups for Cisco/Juniper, and S2S VPN over Microsoft peering. |
| Deployment | L130-L137 | Guides for deploying and migrating ExpressRoute circuits/gateways, including Direct SKUs, zone/AZ-enabled gateways, and ARM/Terraform-based provisioning and traffic migration. |
| Topic | URL |
|---|---|
| Test and validate resiliency of redundant ExpressRoute circuits | https://learn.microsoft.com/en-us/azure/expressroute/evaluate-circuit-resiliency |
| Diagnose and resolve asymmetric routing with ExpressRoute | https://learn.microsoft.com/en-us/azure/expressroute/expressroute-asymmetric-routing |
| Topic | URL |
|---|---|
| Apply best practices for ExpressRoute bandwidth upgrades | https://learn.microsoft.com/en-us/azure/expressroute/about-upgrade-circuit-bandwidth |
| Manage complex ExpressRoute networks using BGP communities | https://learn.microsoft.com/en-us/azure/expressroute/bgp-communities |
| Apply QoS requirements for Skype voice over ExpressRoute | https://learn.microsoft.com/en-us/azure/expressroute/expressroute-qos |
test cases passed, vs 18 / 19 without
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