EVPN Symmetric IRB on Cisco Cat8000v and IOL

[ipspace]

No description provided.

[Copilot]

Pull request overview

Enables EVPN symmetric IRB support on Cisco IOS/XE platforms (specifically IOL and Catalyst 8000v) by advertising device capability, allocating per-VRF transit VLAN IDs, and rendering the required IOS/IOLL2 EVPN configuration.

Changes:

• Mark IOL and Cat8000v as supporting EVPN IRB (features.evpn.irb: true).
• Add IOS-XE quirk logic to assign a per-VRF transit VLAN (vdata.evpn._transit_vlan) and extend EVPN IOS/IOLL2 templates to configure L3VNI bridge-domains/SVIs/BDIs and NVE membership.
• Update EVPN documentation to reflect IOS/XE symmetric IRB support.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
netsim/devices/iol.yml	Advertises EVPN IRB capability for IOL.
netsim/devices/iol.py	Adds transit VLAN allocation logic for IOS-XE-derived devices.
netsim/devices/cat8000v.yml	Advertises EVPN IRB capability for Cat8000v.
netsim/ansible/templates/evpn/ios.j2	Adds dataplane config for VRF transit VNI using bridge-domains and BDIs.
netsim/ansible/templates/evpn/ios-common.j2	Adds control-plane config for VRF EVPN stitching and NVE VRF membership; adds neighbor EVPN encapsulation line.
netsim/ansible/templates/evpn/ioll2.j2	Adds dataplane config for VRF transit VNI using VLAN configuration + SVI.
docs/module/evpn.md	Updates platform support matrix for IOS/XE symmetric IRB.

[DanPartelly]

Thank you.