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The Cisco SD-WAN vSmart installation and configuration process is exactly the same as for vBond controller. Install vSmart, install certificate for vSmart, and finally create DTLS tunnels between vSmart with vBond and vManage controllers. DTLS Tunnels will be used to transfer management and control traffics between controllers.

what is vSmart?

vSmart is control-plane section of SD-WAN infrastructure. The main task of vSmart is to announce routing information between WAN routers, via OMP protocol (Overlay Management Protocol). This protocol is similar to BGP, but it is used in SD-WAN infrastructure. vSmart also handles key and policy exchange used for IPSec tunnels between WAN routers. All of these control traffic are negotiated securely via DTLS tunnel between the vSmart and the WAN routers. Data traffic itself between the WAN routers are transmitted via IPSec tunnel.

4. cisco SD-WAN vManage Installation and Configurationn (Version 20.3.4)

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SD-WAN Basic Topology
SD-WAN Basic Topology

Just to review, vSmart is connected to both Out of Band Management (OOB) network and Internet transport. IP address is the address of OOB and is the address of the interface connected to the Internet transport. is the IP address that we will configure as system-ip in vSmart controller.

vSmat Installation

We start by importing vSmart OVF like what we did for vManage and vBond controllers.

We need two network adapters, the first adapter for OOB and the second adapter to be connected to internet transport. By default, vSmart has one network adapter. So I add another network adapter.

After adding the second adapter, now I can power on the machine.

Now let’s review the configuration and then configure vSmart controller.

As you can see the first adapter (eth0) is used as OOB and the second transport eth1 is used to connect to the internet. will be configured in eth0 and will be configured in eth1.

!!!!! vSmart
Adpater1 (VM Network 1) for oob :  eth0
Adpater2 (VM Network 1) for transport: eth1
user: admin
pass: admin -->

By default, username and passwords are admin/admin. The password is changed to like what we did in vManage and vBond Controller.

The system configuration is the same as vManage and vBond. Hostname, system-ip, site-id, Organization name , vBond IP address and NTP will be configured in vSmart controller. The details of each of these commands are already explained in vManage installation process.

!!!!! vSmart

 host-name vSmart
 site-id 100
 domain-id 1
 organization-name RAYKA
 clock timezone Aisa/Tehran
 ntp server prefer vpn 0
 show configuration

vpn 0
 ip route
 no interface eth0
 interface eth1
  ip address
  no shutdown

vpn 512
 interface eth0
  ip address
  no shutdown

Then we configure VPN 0 and VPN 512.VPN 512 is used as the management VRF and VPN 0 as default VRF. interface eth0 is configured in VPN 512 with IP address interface eth1 is configured inside VPN 0 with IP address default route is configured in VPN 0 with gateway address Default route can also be configured in VPN 512 but I have not configured, since my management client is directly connected to OOB network.

vsmart# show interface | tab

                                         IF      IF      IF                                                                TCP
                AF                       ADMIN   OPER    TRACKER  ENCAP                                     SPEED          MSS                 RX       TX
0    eth1       ipv4    Up      Up      -        null   transport  -    00:0c:29:e8:94:44  1000   full    -       0:12:14:08  130515   87662
0    system     ipv4        Up      Up      -        null   loopback   -    -                  1000   full    -       0:12:19:16  0        0
512  eth0       ipv4  Up      Up      -        null   mgmt       -    00:0c:29:e8:94:3a  1000   full    -       0:12:13:43  43966    9
vsmart# ping
Ping in VPN 0
PING ( 56(84) bytes of data.
64 bytes from icmp_seq=1 ttl=107 time=59.6 ms
64 bytes from icmp_seq=2 ttl=107 time=58.7 ms
64 bytes from icmp_seq=3 ttl=107 time=54.3 ms
--- ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2001ms
rtt min/avg/max/mdev = 54.312/57.586/59.668/2.343 ms

vSmart Certificate Installation

Now we will install certificate and then create DTLS Tunnel from vSmart with other controllers.

First we have to add vSmart controller in vManage.

Configuration -> devices -> controllers -> add controller -> vSmart

We give IP address, username and password of vSmart. CSR will be created in a few we ignore it in this step.

When vSmart is added in vManage, CA certificate is automatically copied into vSmart controller. we can check it with the following command.

vsmart# show certificate root-ca-cert | inc rayka
        Issuer: DC=local, DC=rayka-co, CN=CA
        Subject: DC=local, DC=rayka-co, CN=CA

Now we can request and install certificate for vSamrt.

 Configuration -> certificate -> controllers -> vSamrt -> generate CSR -> copy csr -> request a certificate -> advanced certificate request -> paste csr -> use sdwan template  -> save with vSamrt name

received certificate, now can be installed in vManage interface.

Configuration -> certificate -> controllers -> vSamrt -> Install Certificate -> add generated vBond certificate.

You can see that the certificate is installed but not yet in sync. We need to create DTLS tunnels between vManage and vBond so that they can be synchronized.

Configuration -> devices -> controllers

Create vSmart DTLS Tunnels

DTLS Tunnel is already created in vManage and vBond. Now it must be created in vSamrt controller. Tunnel is created over internet transport. eth1 is in default VRF and connected to internet transport.

We create tunnel interface and allow all services in Tunnel interface.

!!! vSmart
vpn 0
 int eth1
    allow-service all

Now we have to check in vSmart to make sure if DTLS tunnels with vBond and vManage come up.

Two DTLS Tunnels must be created with vBond and one DTLS tunnel with vManage.

vsmart# show control connections
                                                                                             PEER                                          PEER
      PEER    PEER PEER            SITE       DOMAIN PEER                                    PRIV  PEER                                    PUB
INDEX TYPE    PROT SYSTEM IP       ID         ID     PRIVATE IP                              PORT  PUBLIC IP                               PORT  REMOTE COLOR     STATE UPTIME
0     vbond   dtls         0          0                            12346                            12346 default         up     0:12:42:18
0     vmanage dtls        100        0                            12346                            12346 default         up     0:12:42:12
1     vbond   dtls         0          0                            12346                            12346 default         up     0:12:42:18

Now you can also check in the vManage dashboard if vSmart has been added to the list. if The color is green, it means it is activated and ok.

In Configuration -> Devices -> Controllers, you should see that it is now in sync and the third controller is added to SDWAN infrastructure.

Back to: Implementing Cisco SD-WAN Solutions > Cisco SD-WAN Controllers Installation


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