Arista CI Workshops

ATD Dual Datacenter Topology

In this example, the ATD lab is used to create the L2LS Dual Data Center topology below. The IP Network cloud (orange area) is pre-provisioned and is comprised of the border and core nodes in the ATD topology. Our focus will be creating the L2LS AVD data models to build and deploy configurations for Site 1 and Site 2 (blue areas) and connect them to the IP Network.

Lab Instructions

Site Vlans and Subnets

Site	Rack	Vlan	Subnet
1	1	10	10.10.10.0/24
1	2	20	10.20.20.0/24
2	1	30	10.30.30.0/24
2	2	40	10.40.40.0/24

Host Addressing

Site	Rack	Hostname	IP Address.
1	1	s1-host1	10.10.10.100/24
1	2	s1-host2	10.20.20.100/24
2	1	s2-host1	10.30.30.100/24
2	2	s2-host2	10.40.40.100/24

Note: Host nodes are pre-configured with the addresses above. AVD will configure the leaf ports for the hosts.

WAN - IP Network

The WAN IP Network runs OSPF in Area 0.0.0.0 using /31's in the 10.0.0.0/24 address block. The Spines in each DC will peer to nodes in the cloud.

STEP #1 - Create ATD Lab

Create a new ATD Dual Center Lab and follow along. Ask your local account team for assistance.

STEP #2 - Fork and Clone this repo to your ATD Lab

From GitHub, fork this repo (https://github.dev/PacketAnglers/workshops-avd) to your personal GitHub account and use the Programmability IDE to clone your fork to your lab instance.

cd /home/coder/project/labfiles
git clone <your copied URL>
cd workshops-avd

STEP #3 - Update AVD to Latest Version

Update AVD and requirements to the latest version

ansible-galaxy collection install arista.avd arista.cvp --force
export ARISTA_AVD_DIR=$(ansible-galaxy collection list arista.avd --format yaml | head -1 | cut -d: -f1)
pip3 config set global.disable-pip-version-check true
pip3 install -r ${ARISTA_AVD_DIR}/arista/avd/requirements.txt

Note: This must be done each time you start your ATD Lab.

STEP #4 - Set Lab Password environment variable

The following command sets the environment variable LABPASSPHRASE which is used later for connecting to your lab switches and creating local user password.

export LABPASSPHRASE=`cat /home/coder/.config/code-server/config.yaml| grep "password:" | awk '{print $2}'`

Note: This must also be done each time you start your ATD Lab.

STEP #5 - Initialize IP Network Cloud environment

This step pushes pre-defined configs for IP Network Cloud & Host Nodes

make preplab

STEP #6 - Build Site Configs

Once you have adjusted your data model per site, you can build the configs with the following commands. We discuss the data models in the workshop. You can review the data model in the Workshop Guide.

# Build Site 1 Configs
make build-site-1

# Build Site 2 Configs
make build-site-2

STEP #7 - Deploy Site Configs

The following will push your configurations to the switches per site.

# Build Site 1 Configs
make deploy-site-1

# Build Site 2 Configs
make deploy-site-2

STEP #8 - Test Traffic

Log on to a spine to verify OSPF neighbors and ip routes.

From s1-spine1

show ip ospf neighbors
show ip route
ping 10.30.30.1

Log on to a host and ping to a remote host.

From s1-host1 ping s2-host2.

ping 10.40.40.100