In the Static-Dynamic integration model, VSD can only provision specific parameters in VPLS and, or VPRN services. When VSD and the DGW exchange XMPP messages for a specified service, they use vsd-domains to identify those services. A vsd-domain is a tag that is used by the 7750 SR, 7450 ESS, or 7950 XRS router and the VSD to correlate a configuration to a service. When redundant DC GWs are available, the vsd-domain for the same service can have the same or a different name in the two redundant DC GWs.
There are four different types of vsd-domains that can be configured in the router:
L2-DOMAIN – it is associated with a VPLS service in the router and, in VSD, it is attached to an existing Nuage L2-DOMAIN. This type of domain is used for extending Layer 2 subnets to the WAN connected to the DGW.
L2-DOMAIN-IRB – it is associated with a R-VPLS service in the router and, in VSD, it is attached to an existing Nuage L2-DOMAIN. In this case, the DGW is the default gateway for all the VMs and hosts in the Nuage L2-DOMAIN.
VRF-GRE – this domain type is associated with a VPRN service in the router that uses GRE tunnels and MP-BGP VPN-IPv4 to provide connectivity to the DC. In VSD, it is attached to an existing Nuage L3-DOMAIN, when GRE is configured as tunnel-type for L3-DOMAINs.
VRF-VXLAN – this domain type is associated with a router R-VPLS service (connected to a VPRN with an evpn-tunnel VPLS interface) that uses VXLAN tunnels and EVPN to provide connectivity to the DC. In VSD, it is attached to an existing Nuage L3-DOMAIN, when VXLAN is configured as the tunnel-type for L3-DOMAINs.
The domains are configured in the config>service# context and assigned to each service.
# configure service vsd domain
- domain <name> [type {l2-domain|vrf-gre|vrf-vxlan|l2-domain-irb}] [create]
- no domain <name>
<name> : [32 chars max]
<create> : keyword
[no] description - Set VSD Domain Description
[no] shutdown - Administratively enable/disable the domain