Configure vNV in a Fabric over L3 Scenario
Configure vNV - L3 Scenario
Virtual Netvisor (vNV) can be used in conjunction with UNUM to create a seed switch.
Install vNV on the same ESXi server as UNUM, and it reduces the impact of UNUM polling on physical switches.
This section details how to configure vNV in a fabric over an L3 scenario.
Topology
Topology Layer 3
Use the above topology for this demonstration. Here, switches use VLAN 4000 for fabric communication (by default, we use VLAN 1 for fabric communication).
VLAN 11 connected via eth2 (Network Adapter 3) is used to communicate with the rest of the fabric.
VM Properties
A vNV has three interfaces, Eth0, Eth1, and Eth2. In the VM, these interfaces are Network Adapter 1, Network Adapter 2, and Network Adapter 3, respectively.
Eth0 (Network Adapter 1) is not connected anywhere in the VM configuration. Eth1 (Network Adapter 2) and Eth2 (Network Adapter 3) are for management and in-band communication, as illustrated in the image below.
VMware NIC Settings
Port Group Configuration
Following Port Groups (PG) properties are selected on PGs that are associated to VM interfaces Network Adapter 2 and Network Adapter 3.
VLAN ID - 4095
Security → Promiscuous mode – Accept
Security → MAC address Changes – Accept
Security → Forged Transmits - Accept
The figure below demonstrates the same.
VMware Port Group Security Settings
vNV Configuration
You need to configure vNV to communicate with other switches in the fabric and to ensure vNV’s in-band network is reachable from the rest of the fabric.
Management/in-band Shell Configuration
The following is the vmgmt0 (mgmt) and vdata0 (in-band) interface configuration of vNV.
From below snippet, 10.20.11.11/24 is associated with vdata0 (in-band) and 10.13.25.241/23 is associated with vmgmt0 (mgmt).
vdata0
Link encap: Ethernet
HWaddr 66:0e:94:f9:53:ba
inet addr: 10.20.11.11
Bcast: 10.20.11.255
Mask: 255.255.255.0
vmgmt0
Link encap: Ethernet
HWaddr 66:0e:94:f9:ac:0a
inet addr: 10.13.25.241
Bcast: 10.13.25.255
Mask: 255.255.254.0
vNV CLI Configuration
VLAN Configuration:
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CLI (network-admin@DISC-vNV*) > running-config-show | grep vlan-create CLI (network-admin@DISC-vNV*) > vlan-create id 11 replicators none scope local description vlan-11 ports 1-63,65-271 CLI (network-admin@DISC-vNV*) > vlan-create id 4000 replicators none scope local description vlan-4000 ports 1-271 |
Here VLAN 11 is used to connect to the rest of the fabric through eth2 (Network Adapter 3) and VLAN 4000 is used to patch in-band interface to vRouter zone.
vRouter Configuration
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CLI (network-admin@DISC-vNV*) > running-config-show | grep vrouter-create vrouter-create name DISC-vNV location DISC-vNV fabric-comm proto-multi none bgp-bfd-all-if enable |
Here vRouter type is “fabric-comm” and is needed in case of fabric over L3 configuration.
vRouter Interface Configuration
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CLI (network-admin@DISC-vNV*) > running-config-show | grep vrouter-interface-add CLI (network-admin@DISC-vNV*) > vrouter-interface-add vrouter-name DISC-vNV nic eth1.11 ip 10.0.1.11/24 assignment2 none vlan 11 CLI (network-admin@DISC-vNV*) > vlan-type public if data if-nat-realm internal CLI (network-admin@DISC-vNV*) > vrouter-interface-add vrouter-name DISC-vNV nic eth0.4000 ip 10.20.11.100/24 assignment2 none vlan 4000 vlan-type public if data fabric-nic if-nat-realm internal |
The VLAN-11 interface communicates with the fabric, and the VLAN-4000 interface to reach the switch in-band IP.
The VLAN-4000 interface IP is in the same subnet as switch in-band IP and that interface is “fabric-nic.”
Switch Route Configuration
Switch routes are configured to reach in-band IPs of other switches from the global zone.
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CLI (network-admin@DISC-vNV*) > running-config-show | grep switch-route-create CLI (network-admin@DISC-vNV*) > switch-route-create network 10.0.1.0/24 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.1.0/30 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.2.0/24 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.3.0/24 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.4.0/24 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.5.0/24 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.6.0/24 gateway-ip 10.20.11.100 CLI (network-admin@DISC-vNV*) > switch-route-create network 10.20.7.0/24 gateway-ip 10.20.11.100 |
Networks defined here are the in-band networks of other switches in the fabric and 10.20.11.100 is the VLAN-4000 IP configured on the vNV vRouter.
vRouter Static Route Configuration
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CLI (network-admin@DISC-vNV*) > running-config-show | grep vrouter-static CLI (network-admin@DISC-vNV*) > vrouter-static-route-add vrouter-name DISC-vNV network 0.0.0.0/0 gateway-ip 10.0.1.1 |
The default route is now 10.0.1.1, which is on the other end of the VLAN-11 vrouter interface reachable through eth2 (Network Adapter 3).
With this, you are able to reach in-band IPs of switches in the fabric and vNV is able to join the fabric.