Virtual Extensible Local Area Network (VXLAN)
Assisted Replication
Assisted replication is a feature within a virtual extensible local area network (VXLAN)
environment that improves efficiency of broadcast, unknown unicast, and multicast (BUM)
traffic handling. More specifically, assisted replication only modifies the forwarding
behavior of BUM traffic.
Supported Platforms
ExtremeSwitching X465, X590, X670-G2, X690, X695, X870, 5520 series switches.
Limitations
In addition to restrictions imposed by VXLAN (or EVPN), the following are currently
not supported:
- Mixed replicator/leaf
functionality. A switch can be configured as a replicator or a leaf for all
virtual network identifiers (VNI).
- Assisted replication control
plane (as defined in draft-ietf-bess-evpn-optimized-ir).
- Local attachment (access
interface) for VNI on the replicators when there is more than one active
replicator per VNI.
- Mixing assisted replication
with head-end replication per VNI.
- Assisted replication when not
used in an EVPN or VXLAN topology.
- Combining assisted
replication with IGMP/MLD snooping on the tenant VLAN, or PIM on the tenant
VLAN.
Additional limitations:
- Without the control plane, a replicator must assume all other end-points are
leafs.
- Stacks that do not support VXLAN are not supported.
- Only a single replicator per VNI is supported.
- The replicator can support a maximum of 250 attached leaf nodes.
New CLI Commands
configure
virtual-network
replication-role [rnve | replicator |
leaf {selected-replicator-default
ipaddress}]
Changed CLI Commands
The following command is changed to show assisted replication information:
show virtual-network {vn_name | vxlan vni
vni | [vlan
vlan_name | vman
vman_name]}
