Deploying EVPN Services
This demo shows how NSO can simplify the deployment of 3 EVPN use cases: VPWS, bridge and IRB. The EVPN model is designed to take the minimum possible input to create a valid EVPN service.
This demo only supports IOS XR devices using NETCONF.
Getting Started
Pre-requisites
The focus of this demo is on EVPN only. All other aspects of the network are expected to be preconfigured, including:
- v4/v6 addressing
- IGP
- BGP (including neighbors, EVPN address family, etc)
- VRFs and L3VPN (for IRB)
Sample initial configurations are available in the examples directory.
Resource-manager
This demo makes use of the resource-manager bundle package to manage the allocation of ESIs, EVIs, and MAC addresses. Ensure that your NSO instance has the resource-manager package installed. The resource-manager package is available on https://software.cisco.com
Usage
Resource-pools
The EVPN demo allocates resources from an esi-pool and an evi-pool. To use the default values, perform a load-merge on the resource-pools.xml in the main directory before configuring anything else.
Ethernet-Segments
The first step is to configure the ethernet-segments that will be used in the EVPN services. Ethernet-segments consist of a list of devices and interfaces. All ethernet-segments default to multi-homed, all-active unless otherwise specified.
Example:
ethernet-segment SJC1
device pe1 interface HundredGigE 0/0/0/0
device pe2 interface HundredGigE 0/0/0/0
ethernet-segment DEN1 homing-type single-homed
device pe3 interface HundredGigE 0/0/0/0
More examples are available in the examples directory.
EVPN Service
The following EVPN types are supported: VPWS, bridge and IRB.
A VPWS consists of a list of exactly two ethernet-segments. If the same ethernet-segment is used in more than one EVPN service, a VLAN encapsulation must be specified.
Example:
evpn ACME_PWs
vpws PW1 ethernet-segments [ SJC1 DEN1 ] encapsulation dot1q 10
vpws PW2 ethernet-segments [ SJC1 DEN1 ] encapsulation dot1q 20
vpws PW3 ethernet-segments [ SJC1 DEN1 ] encapsulation dot1q 30
Testing
The function pack was tested on a small ASR9000-based topology. Base configurations are available in the examples directory.