Distributed Virtual Routing (DvR)

Note

Local hosts use ARP entries and remote hosts use host entries. For information on IP ARP scaling, see IP Unicast.

Table 1. DvR Maximums
Attribute	Product	Maximum number supported
Note: On the DvR leaf, you must enable the VRF scaling boot configuration flag if more than 24 VRFs are required in the DvR domain. Scaling of a VSP 4450 Series switch controls the scaling of the DvR domain it is in. For example, if a VSP 4450 Series switch is in a DvR domain with other platforms such as 5520 Series and 5420 Series, the scaling of the entire domain is limited to the scaling of the VSP 4450 Series.
DvR Virtual IP interfaces	5320 Series	48-port models: 248 16- and 24-port models: n/a
	5420 Series	247 with VIST 248 without VIST
	5520 Series	499 with vIST 500 without vIST
	5720 Series	999 with vIST 1000 without vIST
DvR domains per SPB fabric	5320 Series	16
	5420 Series	16
	5520 Series	16
	5720 Series	16
Controller nodes per DvR domain with default route inject flag enabled Total number of Controllers per domain cannot exceed 8. Note: A DvR domain containing only Controller nodes and no Leaf nodes can have more than 8 Controllers per domain.	5320 Series	n/a
	5420 Series	n/a
	5520 Series	8
	5720 Series	8
Leaf nodes per DvR domain	5320 Series	250
	5420 Series	250
	5520 Series	250
	5720 Series	250
DvR enabled Layer 2 VSNs	5320 Series	48-port models: 248 16- and 24-port models: n/a
	5420 Series	247 with vIST 248 without vIST
	5520 Series	499 with vIST 500 without vIST
	5720 Series	999 with vIST 1000 without vIST
DvR host route scaling per DvR domain (scaling number includes local as well as foreign hosts of the Layer 2 VSN that are members of the domain) If DvR Layer 2 VSNs span DvR domains, and all DvR Controllers have an IP interface on the Layer 2 VSNs, then the DvR host scaling is network-wide, as DvR Controllers will consume as many host routes as there are hosts across all DvR domains.	5320 Series	48-port models: 16,000 16- and 24-port models: n/a
	5420 Series	16,000 for 5420F Series models 32,000 for 5420M Series models
	5520 Series	48,000
	5720 Series	64,000 for 5720MW Series models 96,000 for 5720MXW Series models