In the previous lesson, we have seen how to set up a Cisco SD-WAN version 18.4 home lab on EVE-NG without using a Cisco Smart Account. The home lab is a convenient way to practice for the CCIE Enterprise Infrastructure exam and test different features of the solution.
This lesson will show how to run the latest Cisco SD-WAN software version on a PNETlab virtual machine - an alternative network emulator that some think is better than EVE-NG. However, the process is absolutely the same for all network emulators. This method requires a Cisco Smart Account, though.
Cisco SD-WAN requires a lot of processing power and resources. For a small practicing topology consisting of 1 controller of each type and 3-4 vEdges, you should give the PNETlab VM at least eight vCPUs and 16GB of RAM. However, if you want to make a large topology with redundant controllers and many vEdge devices, you must have a lot of computing resources at your disposal. Additionally, do not forget to enable the Intel VT-x or AMD-V option within the virtual machine and add a secondary NIC card.
Cisco SD-WAN Images
You will need to have the following Cisco SD-WAN images to set up this practice lab environment on PNETlab:
Once you have the images, you need to create a folder for each one and then transfer them to the PNETlab VM using a Frezzila or WinSCP tool. After uploading the images to their respective folders in the virtual machine, you need to rename the original files to "virtioa". Additionally, you need to create an additional virtual disk for the vManage controller. You can do this with the command highlighted in green:
# Creating Folders mkdir /opt/unetlab/addons/qemu/vtbond-20.4.1 mkdir /opt/unetlab/addons/qemu/vtsmart-20.4.1 mkdir /opt/unetlab/addons/qemu/vtmgmt-20.4.1 mkdir /opt/unetlab/addons/qemu/vtedge-20.4.1 ## vManage cd /opt/unetlab/addons/qemu/vtmgmt-20.4.1 mv viptela-vmanage-20.4.1-genericx86-64.qcow2 virtioa.qcow2 /opt/qemu/bin/qemu-img create -f qcow2 virtiob.qcow2 150G ## vSmart cd /opt/unetlab/addons/qemu/vtsmart-20.4.1 mv viptela-smart-20.4.1-genericx86-64.qcow2 virtioa.qcow2 ## vBond cd /opt/unetlab/addons/qemu/vtbond-20.4.1 mv viptela-edge-20.4.1-genericx86-64.qcow2 virtioa.qcow2 ## vEdge cd /opt/unetlab/addons/qemu/vtedge-20.4.1 mv viptela-edge-20.4.1-genericx86-64.qcow2 virtioa.qcow2 ## Fix permissions /opt/unetlab/wrappers/unl_wrapper -a fixpermissions
The physical topology that we are going to use is as follows. You should create it on PNATlab. If you want to copy/paste the bootstrap configs shown below, ensure that you use the same interface names when creating the topology.
Default credentials for all devices are admin/admin. When vManage boots for the first time, it will ask which storage device to use for installing the software. Please make sure to use the virtual disk you have created in the previous step.
viptela 20.4.1 vmanage login: admin Password: Welcome to Viptela CLI admin connected from 127.0.0.1 using console on vmanage You must set an initial admin password. Password: Re-enter password: Available storage devices: vdb 100GB hdc 3GB 1) vdb 2) hdc Select storage device to use: 1 Would you like to format vdb? (y/n): y
Deploying the Controllers
Once all devices boot up, it is time to enable basic connectivity between the Cisco SD-WAN controllers. The following bootstrap configurations are the minimum required to achieve basic connectivity. Notice that the tunnel interfaces are disabled in the beginning. Once all devices join the control plane, we will enable the overlay fabric.
! system host-name vBond system-ip 126.96.36.199 site-id 1 organization-name networkacademy-io vbond 10.1.1.10 local ! vpn 0 interface ge0/0 ip address 10.1.1.10/24 no tunnel-interface no shutdown ! !
! system host-name vManage system-ip 188.8.131.52 site-id 1 organization-name networkacademy-io vbond 10.1.1.10 ! vpn 0 interface eth0 ip address 10.1.1.20/24 no shutdown ! ! vpn 512 interface eth1 ip address 192.168.115.20/24 no shutdown ! !
system host-name vSmart system-ip 184.108.40.206 site-id 1 organization-name networkacademy-io vbond 10.1.1.10 ! vpn 0 interface eth0 ip address 10.1.1.30/24 no tunnel-interface no shutdown ! !
At this point, each controller should successfully ping any other in VPN0. If for whatever reason, there is no reachability to one of the devices, you should not continue ahead but troubleshoot and resolve the issue.
Cisco SD-WAN Controllers can not be brought into operation unless an established chain of trust validates their identity. This identity validation process is intended to ensure that only trusted devices can join the SD-WAN solution while still retaining flexibility. Each controller must have a root certificate installed and a controller certificate installed and signed by a trusted Certification Authority (CA).
We will use the vBond controller as a Root CA to create this lab environment.
vBond as Root CA
The first step to configure the vBond to act as a root of trust is to generate an RSA private key. Then we generate a ROOTCA.pem certificate and sign it with the private key that we have just created.
#Use vshell / viptela_cli to switch between shell and cli modes vBond# vshell vBond:~$ openssl genrsa -out ROOTCA.key 2048 Generating RSA private key, 2048 bit long modulus ........+++..............................................+++ e is 65537 (0x10001) vBond:~$ openssl req -x509 -new -nodes -key ROOTCA.key -sha256 -days 1024 \ > -subj "/C=US/ST=NY/L=NY/O=networkacademy-io/CN=root.certificate" \ > -out ROOTCA.pem vBond:~$ ls -l total 12 -rw-r--r-- 1 admin admin 1679 Mar 23 09:41 ROOTCA.key -rw-r--r-- 1 admin admin 1285 Mar 23 09:41 ROOTCA.pem -rw-r--r-- 1 admin admin 392 Mar 23 09:37 archive_id_rsa.pub
Now you need to log in to the vManage GUI interface. This is done using a web browser and entering the URL https://[vManage-VPN512-IP-address]:8443. Default credentials are admin/admin.
Once logged in, you need to configure the following:
- go to Administration > Settings and set the Organization Name to be networkacademy-io
- edit the vBond address, and put it to 10.1.1.10
- make sure that Controller Certificate Authorization is set to Enterprise Root Certificate
- ensure that the WAN Edge Cloud Certificate Authorization is set to Automated.
The steps are shown below:
The first step is to set up the Organization Name. It should be the same on all devices and within the Cisco Smartnet account that you are going to create in the later steps.
Then you need to specify the vBond VPN0 address as is shown in the screenshot below:
Then you need to take the root certificate that you have created in the previous step and past it in the Certificate window as shown below:
vBond# vshell vBond:~$ cat ROOTCA.pem -----BEGIN CERTIFICATE----- MIIDhTCCAm2gAwIBAgIJALo9MATOn77TMA0GCSqGSIb3DQEBCwUAMFkxCzAJBgNV BAYTAkFVMQwwCgYDVQQIDANOU1cxDDAKBgNVBAcMA05TVzEaMBgGA1UECgwRbmV0 d29ya2FjYWRlbXktaW8xEjAQBgNVBAMMCXNkd2FuLmxhYjAeFw0yMTA1MzEwOTA5 MzRaFw0yNDAzMjAwOTA5MzRaMFkxCzAJBgNVBAYTAkFVMQwwCgYDVQQIDANOU1cx DDAKBgNVBAcMA05TVzEaMBgGA1UECgwRbmV0d29ya2FjYWRlbXktaW8xEjAQBgNV BAMMCXNkd2FuLmxhYjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMNN aLvGyHemWTmFn8KfGgbjkJbrLu2thUi5vHM4VyJh9KR/JC8wmsga8Sw/f0WLgVE/ s9sVrykpkRdbIpDaNoAXpNQqlhARAau7hyC3UxrpYIovgdJAj0m6k7pNw8sClAME xpE0A3GclO1F5S+RdSRWIkcEyToPZTLufY27DdtBpVc8jPViCmqAO3qGiwc1nZoy 42I56WHfaYhEdbbbMI+NuHjc4JWUMYbPnIznI8AGLcThXvYl0Pr+QcH9aZWJQZWy uTbZD7ckYx3MIB+sDL2mN4YoguenA3lz6DGtAv7jFqCmCJNwkCnG3fL2ws1pInr1 BVqH1M2BDVvKnc59s+UCAwEAAaNQME4wHQYDVR0OBBYEFAAAvbklonXV/Od9GXPc 2XwINchOMB8GA1UdIwQYMBaAFAAAvbklonXV/Od9GXPc2XwINchOMAwGA1UdEwQF MAMBAf8wDQYJKoZIhvcNAQELBQADggEBAKUkTMTq++yudMgmhwgwqRvE8V9EJKQ2 PJVrtVw2uAMMM8D/cEcY3BH8Y4T3nZoOXM0KkhU5Epcc1KFkX2SEVBwsiMjA2HkH 4mii9lOXLc8kJkkxDkmcHQrPI6vibPwk1EQCZuvOb3uT/hMLCVgWYO/Qtvvt4P4P aSD0cdEvOt81tI5kIfymQajFBVXfp08/xc0QGewgly+dvEmJFnL10jc7IYdMnKH3 5DFQ2JYymaMAIEfKFdHHSavw40oUwjrlOFuo0oG8xCWvQRibMhHXaoBN+olRtwqn 8yg1/PYkE+HQa3R0Mk3ikB0QR8qqwKtxy/Hfo26rhW4FqnPlvdC3rEo= -----END CERTIFICATE-----
Once you copy/paste the value within the GUI window, you click Import & Save.
In the end, you must ensure that the WAN Edge Cloud Certificate Authorization is set to Automated. This means that once a vEdge successfully authenticates with vBond and is allowed to join the fabric, vManage will automatically generate CSR, sign, and install a device certificate to that device.
Once we complete these steps, the vManage controller will have our root certificate. It is time to add the other SD-WAN controller via the vManage GUI. W go to Configuration > Devices > Controllers > Add Controller and add all vBond and vSmart controllers.
Once all controllers are added to vManage, we go to Configuration > Certificates> Controllers and click Send to vBond.
At this point, the vManage controller will install the root certificate to each SD-WAN controller. Once completed, each controller must have a root certificate installed. We should verify this using the show certificate root-ca-cert command as shown below.
vManage# show certificate root-ca-cert | in networkacademy Issuer: C=US, ST=NY, L=NY, O=networkacademy-io, CN=root.certificate Subject: C=US, ST=NY, L=NY, O=networkacademy-io, CN=root.certificate --------------------------------------------------------------------- vSmart# show certificate root-ca-cert | in networkacademy Issuer: C=US, ST=NY, L=NY, O=networkacademy-io, CN=root.certificate Subject: C=US, ST=NY, L=NY, O=networkacademy-io, CN=root.certificate --------------------------------------------------------------------- vBond# show certificate root-ca-cert | in networkacademy Issuer: C=US, ST=NY, L=NY, O=networkacademy-io, CN=root.certificate Subject: C=US, ST=NY, L=NY, O=networkacademy-io, CN=root.certificate
If a controller does not have our custom root-of-trust, you should not continue ahead but instead troubleshoot the problem.
Now it is time to install a device certificate to each SD-WAN controller. We go to Configuration > Certificates> Controllers and generate a certificate signing request (CSR) for each one.
Once done, we need to copy all certificate signing requests in our vBond controller (the root CA).
vBond# vshell vBond:~$ scp firstname.lastname@example.org:/home/admin/vsmart_csr vSmart.csr vBond:~$ scp email@example.com:/home/admin/vmanage_csr vManage.csr vBond:~$ scp firstname.lastname@example.org:/home/admin/vbond_csr vBond.csr vBond:~$ ls -l total 28 -rw-r--r-- 1 admin admin 1679 Mar 23 09:41 ROOTCA.key -rw-r--r-- 1 admin admin 1285 Mar 23 09:41 ROOTCA.pem -rw-r--r-- 1 admin admin 392 Mar 23 09:37 archive_id_rsa.pub -rw-r--r-- 1 admin admin 1224 Mar 23 12:12 vBond.csr -rw-r--r-- 1 admin admin 1228 Mar 23 12:12 vManage.csr -rw-r--r-- 1 admin admin 1224 Mar 23 12:12 vSmart.csr -rw-r--r-- 1 root root 1224 Mar 23 12:05 vbond_csr
When you list the directory and see that all CSRs are present, you can go ahead and sign them.
vBond:~$ openssl x509 -req -in vBond.csr \ > -CA ROOTCA.pem -CAkey ROOTCA.key -CAcreateserial \ > -out vBond.crt -days 500 -sha256 Signature ok vBond:~$ openssl x509 -req -in vSmart.csr \ > -CA ROOTCA.pem -CAkey ROOTCA.key -CAcreateserial \ > -out vSmart.crt -days 500 -sha256 Signature ok vBond:~$ openssl x509 -req -in vManage.csr \ > -CA ROOTCA.pem -CAkey ROOTCA.key -CAcreateserial \ > -out vManage.crt -days 500 -sha256 Signature ok
Now you should see all controllers' certificates.
vBond:~$ ls -alh | grep crt -rw-r--r-- 1 admin admin 1.3K Feb 12 09:40 vBond.crt -rw-r--r-- 1 admin admin 1.4K Feb 12 09:41 vManage.crt -rw-r--r-- 1 admin admin 1.3K Feb 12 09:41 vSmart.crt vBond:~$
It is time to install all controller certificates via the vManage GUI. Go to Configuration > Certificates > Controllers > Install Certificate.
Now that you have all certificates (.crt) in vBond's directory, you simply cat each of them and paste the output in the Install Certificate window as shown below:
vBond:~$ cat vManage.crt -----BEGIN CERTIFICATE----- MIIDpjCCAo4CCQCpxofKmIPl+TANBgkqhkiG9w0BAQsFADBZMQswCQYDVQQGEwJB VTEMMAoGA1UECAwDTlNXMQwwCgYDVQQHDANOU1cxGjAYBgNVBAoMEW5ldHdvcmth Y2FkZW15LWlvMRIwEAYDVQQDDAlzZHdhbi5sYWIwHhcNMjEwNDEwMDk0MDQwWhcN MjIwODIzMDk0MDQwWjCB0DELMAkGA1UEBhMCVVMxEzARBgNVBAgTCkNhbGlmb3Ju aWExETAPBgNVBAcTCFNhbiBKb3NlMRowGAYDVQQLExFuZXR3b3JrYWNhZGVteS1p bzEUMBIGA1UEChMLdklQdGVsYSBJbmMxQzBBBgNVBAMUOnZtYW5hZ2VfOWVmYTcz Y2MtMmIxNi00NzNhLWFjMGUtNTQyZjhjNGRhMzg5XzAudmlwdGVsYS5jb20xIjAg BgkqhkiG9w0BCQEWE3N1cHBvcnRAdmlwdGVsYS5jb20wggEiMA0GCSqGSIb3DQEB AQUAA4IBDwAwggEKAoIBAQDO4mHeqgQ/i59TRuKjmB+i70wbzvTVf606nBzf44MD qgsFY3hwBgWcu5dcOEkkI8uCkTFoQqinQtgtw5Ucd3aE0e8skLwy6W1xzcl1YtvV 88C23BSVc66A7p/dT5g7Z4UWCm4O4BER46uNMalTZKYBGGRONMv0e1VfJgAUEN9/ bLgQMwyFdawhIYq/32rEUhms3mSunO56pAjmUBWcO19FVAFBJQXdUlpqFvniMfWW K6/YXFZQ5Y9kj7TH3tLLfkZQJ62/vohBVkdwLQvm9N2XJqL/ZEa8XPRSLs56Wy0W /WbqX2gs0emSXTQN99Npq7ILX8fF+w7W+Rqcb9Pqe3cRAgMBAAEwDQYJKoZIhvcN AQELBQADggEBABssqE1Ds8bEVp5+NXDzw1gNZmU1S+j/1Affk+FVHivIXXp8tJq5 iJU8yUYFQQeXSXQHtJWeDEIGKZ5q3Q7MB/NnxqQtyDzF3ejQ69DDWwoWI2YcCz0e g5H1Lk+2wKLRXYCvFkarMDIlbMNwoehUSiJDQUbDBJsNo5oqFa2bARB5NHoLYHrS O7yU24F0qSRBR4HmZuwAbvBgTrVMUyjj0NIgprb3IqpqdSpwIxtL1o8GS10Q82sR ICO1TBbYlqPvozd7HYRRgFGmG+9VIaORKLhPoJcM7tvIdQxmdrCItYATUy2djp6E GyOO7U0MLBDbTzCkfl4huCOcbu/dWNk6zJk= -----END CERTIFICATE-----
If everything is good up to this point, the certificate should install successfully.
You repeat this for all controllers. In the end, when you go to Configuration > Certificates > Controllers, you should see that all controllers have Certificate Serial numbers. If that is the case, you click the Send-to-vBond function to propagate this information to vBond.
At this point, all controllers should be operational with valid certificates. Now it is time to bring up the tunnel interfaces using the configuration below:
# on vManage and vSmart ! vpn 0 interface eth0 tunnel-interface ! # on vBond and vEdges ! vpn 0 interface ge0/0 tunnel-interface encapsulation ipsec allow-service all !
If everything has successfully completed up to this point, each controller should have both root and device certificates installed and a serial number, as shown in the output below.
vBond# show control local-properties personality vedge sp-organization-name networkacademy-io organization-name networkacademy-io root-ca-chain-status Installed ! certificate-status Installed certificate-validity Valid certificate-not-valid-before Feb 12 09:40:49 2022 GMT certificate-not-valid-after Jun 27 09:40:49 2023 GMT ! dns-name 10.1.1.10 site-id 1 domain-id 1 protocol dtls tls-port 0 system-ip 220.127.116.11 chassis-num/unique-id 52a6b4e6-6cb4-452b-xxxx-xxxxxxxxxxxx serial-num CB7838EBXXXXXXXX subject-serial-num N/A token Invalid keygen-interval 1:00:00:00 retry-interval 0:00:00:18 no-activity-exp-interval 0:00:00:20 dns-cache-ttl 0:00:02:00 port-hopped TRUE time-since-last-port-hop 0:04:14:59 pairwise-keying Disabled embargo-check success cdb-locked false number-vbond-peers 0 number-active-wan-interfaces 1
Additionally, each one must have established control connections to all other controllers as shown in the output below.
vBond# show orchestrator connections PEER PEER PEER SITE ORGANIZATION INSTANCE TYPE PROTOCOL SYSTEM IP ID STATE NAME UPTIME ---------------------------------------------------------------------------------- 0 vsmart dtls 18.104.22.168 1 up networkacademy-io 0:00:01:17 0 vsmart dtls 22.214.171.124 1 up networkacademy-io 0:00:01:17 0 vmanage dtls 126.96.36.199 1 up networkacademy-io 0:00:02:22 0 vmanage dtls 188.8.131.52 1 up networkacademy-io 0:00:02:22 0 vmanage dtls 184.108.40.206 1 up networkacademy-io 0:00:02:23 0 vmanage dtls 220.127.116.11 1 up networkacademy-io 0:00:02:23
If everything is working up to this point, we can now go ahead and provision the vEdge routers.
Cisco Smart Account
To add vEdge devices to the SD-WAN overlay fabric, we need to have a Cisco Smart Account at the Cisco Software Central (https://software.cisco.com). We create a new Virtual Account for each independent SD-WAN overlay domain within the account. Therefore, when setting up a new lab environment, we should create a new dedicated virtual account, as shown in the screenshot below.
We go to Cisco Software Central > Manage Smart Account > Account Properties and navigate to the Virtual accounts page. There, we go to Greate Virtual Account, as shown in the screenshot below.
We give the virtual account a name and description and make it private. The virtual account is a logical container for all devices and licenses participating in this SD-WAN domain.
Once the Virtual Account is created, we go to the Cisco Software Central > Plug and Play Connect, as shown in the screenshot below. Then we switch from the DEFAULT virtual account to the one we have created in the previous step.
In there, we navigate to the Controller Profile page and select Add Profile. We should add a new vBond profile with the organization name that we will use within the lab topology.
Once we have added the vBond profile, we go to Devices and select Add Software Devices, as shown in the screenshot below.
There, we add as many vEdge cloud routers as we will use in the lab topology and assign them to the Controller Profile that we created in the previous step.
Once we have added all virtual routers that we are going to need, we go to Controller Profile and download the vEdge list by clicking the Provisioning File.
Now that we have got the vEdge list, we can go back to the lab and import the file to vManage.
Now that the SD-WAN controllers are deployed, it is time to provision the vEdge routers.
The first step is always to upload the vEdge list to vManage. There are two options here:
- In scenarios where the vManage controller does not have access to the Internet, we download the vEdge list and upload it to vManage at Configuration > Devices > WAN Edge list, as shown in the screenshot below.
- In scenarios where the vManage controller has access to the Internet, we could synchronize it with our Cisco Smart Account by adding the credentials directly at Administration > Settings > Smart Account Credentials, as shown in the screenshot below.
Regardless of the method, vManage must have a list of the WAN edge routers that we are going to use in the lab topology.
Once the vEdge list has been added to vManage, we need to bootstrap the routers so that they have IP reachability to the SD-WAN controllers. The example below shows the process for one vEdge router. However, you will need to adjust the IP addressing for all other vEdges so that there are no duplicate IPs.
system host-name vEdge-1 system-ip 18.104.22.168 site-id 100 organization-name networkacademy-io vbond 10.1.1.10 ! vpn 0 interface ge0/0 ip address 10.1.1.40/24 tunnel-interface encapsulation ipsec color biz-internet allow-service all no shutdown !
Once IP connectivity has been established, we should copy the root certificate from vBond and install it on the router as shown in the output below.
vEdge-1# vshell vEdge-1:~$ scp email@example.com:/home/admin/ROOTCA.pem ROOTCA.pem The authenticity of host '10.1.1.10 (10.1.1.10)' can't be established. ECDSA key fingerprint is SHA256:ReVYCCci7rlqIbk0jFkubohNSZGiBlVXKiMECyyP2nY. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '10.1.1.10' (ECDSA) to the list of known hosts. viptela 20.4.1 Password: ROOTCA.pem 100% 1294 31.0KB/s 00:00 vEdge-1:~$ vEdge-1:~$ viptela_cli Welcome to Viptela CLI admin connected from 127.0.0.1 using console on vEdge-1 vEdge-1# vEdge-1# request root-cert-chain install /home/admin/ROOTCA.pem Uploading root-ca-cert-chain via VPN 0 Copying ... /home/admin/ROOTCA.pem via VPN 0 Updating the root certificate chain.. Successfully installed the root certificate chain
At this point, the router has our custom root-chain-of-trust installed. Now we need to install a device certificate.
We go to Configuration > Certificates > WAN Edge List and take the next available Chassis Number and Token.
Then we need to active the router with the values we have taken from the vEdge list.
vEdge-1# request vedge-cloud activate Value for 'chassis-number': be6e-0057-xxxx-xxxx-xxxxxxxxxxxx Value for 'token': f53329xxxxxxxxxxxxxxxxxxxxx vEdge-1#
Once the chassis number and the token are entered on the WAN edge router, we have to wait a couple of minutes. The vManage controller will automatically install a device certificate to the router. When this is completed, we should see that the router has a serial number, as shown in the output below.
vEdge-1# show certificate serial Chassis number: be6e-0057-xxxx-xxxx-xxxxxxxxxxxx serial number: FFA6XXXX
And the ultimate test would be to check whether the vEdge has joined the SD-WAN control plane, as shown below.
vEdge-1# show control connections | t PEER SITE SYSTEM LOCAL REMOTE INSTANCE TYPE ID IP PROTOCOL COLOR COLOR STATE UPTIME V ORG NAME -------------------------------------------------------------------------------------------------- 0 vsmart 1 22.214.171.124 dtls default default up 0:02:53:10 networkacademy-io 0 vbond 0 0.0.0.0 dtls default default up 0:02:53:10 networkacademy-io 0 vmanage 1 126.96.36.199 dtls default default up 0:02:53:10 networkacademy-io
We repeat this process for each vEdge router that we will use in the lab topology. Once all routers join the SD-WAN control plane, we can go ahead and re-design the topology as we wish. We can change the system-ips, site-ids, and all other parameters of each vEdge router, and it will still be able to join the control plane.