Netgear XSM4348CS Product Data Sheet - Page 16

ProSAFE® Intelligent Edge Managed Switches Target Application Data Sheet M4300 series Building 3: Spine and Leaf Stack • For typical collapsed core installations, with a variety of 1G and 10G access ports in branch offices, server rooms or campus high performance labs • M4300 10G models can stack with M4300 1G models, enabling innovative "spine and leaf" topologies (other ring topologies are also possible) • Spine and leaf architectures deliver highest performance with every leaf switch (1G) connecting to every spine switch (10G) --In Building 3 above, every 1G "leaf" access switch connects to both 10G "spine" distribution switches • Any 10G port (copper, fiber) and any media type (RJ45, SFP+, DAC) can be used for stacking on any M4300 model --On 1G models, up to (4) 10G ports per switch can be used for stacking, hence allowing for line-rate aggregation to their spine --On 10G models, any 10G ports can be used for stacking, depending on inter-switch links oversubscription requirements • Up to (8) M4300 switches can be aggregated using a virtual backplane and a single console or web management interface • Hot swap, redundant power supplies and PoE+ full provisioning are other M4300 unique advantages in this affordable price range • While reducing the number of logical units to manage, stacking also brings network resiliency with distributed uplinks in aggregation to main core • Using adequate priorities in the stack, both 10G "spine" switches are meant to handle "management unit" and "backup management unit" roles • This way, management unit hitless failover and nonstop forwarding ensures no single point of failure: --Nonstop Forwarding (NSF) enables the stack to secure forwarding end-user traffic on all other switches when the management unit fails --Instant failover from management unit to backup management unit is hitless for the rest of the stack --Since both the management unit and the backup unit connect to the core using distributed link aggregation (LACP), there is no possible service interruption while the backup management unit takes over --All other switches in the stack keep forwarding L2 and L3 traffic in and out, while backup unit guarantees connectivity to the core • Other lower end solutions are causing service interruptions across the entire stack without NSF and hitless failover • Back to normal production conditions, hitless failback requires a command in CLI or in GUI, for more control • Hitless failback is automatic in case of new management unit (triggered or accidental) failure • M4300 Virtual Chassis stacking technology upsurges overall network availability, providing better resiliency in network architectures, and better performance with advanced load balancing capabilities between network uplinks --In this architecture, both 10G "spine" switches connect to main core using 10G LACP link aggregation Page 16 of 49