Virtual Chassis Stacking Technology
Technology Overview
NETGEAR Virtual Chassis stacking technology provides resilient network architecture: up to 8 independent switches (GSM7xxxS series) or up to 4 independent switches
(XSM7xxxS series) are consolidated around a single management IP address, which simplifies network operations.
The stack acts as a single switch in the network:
• One CLI and one web interface managing the virtual chassis
• The other switches in the network also “see” the stack as a virtual chassis
• The virtual chassis needs only one configuration file, similar to a typical modular
chassis switch
NETGEAR Virtual Chassis stacking technology is flexible:
• GSM7xxxS series switches intelligently join the Virtual Chassis architecture with a 48-Gbps
switching stack interconnect, when using local AX742 stacking kits
• 10 Gigabit fiber is also available for distant GSM7xxxS – local and distant switches can
join the same stack
• XSM7xxxS series switches are even more flexible: all ports are Stack capable – you can
use up to 4 ports per stack interconnect to create a 80Gbps Stacking backplane
NETGEAR Virtual Chassis stacking technology delivers a bidirectional, highly resilient topology:
• Higher throughput capacity with lower latency and jitter for VoIP and Multicast traffic
• Each switch in the stack understands the shortest path to forward traffic, bi-directionally
both up and down
• Dual ring architecture ensures that if a switch fails within the stack, all others switches
can still communicate with one another
Virtual Chassis Functionality
Within the stack, a switch is elected as the “Master”: the master is responsible for the control plane and forwarding/routing
tables for the stack members. Automatic Unit Replacement guarantees stack members’ smooth replacement without manual
reconfiguration. Stack master redundancy is also automatic. As for a Chassis switch, VLAN tagging, port mirroring and link
aggregation are available from every port to every port across the stack.
Distributed Link Aggregation
Distributed trunking across the stack allows redundant uplinks without creating loops: LACP automatic load-balancing and port failover ensure greater bandwidth between
network layers and maximize redundancy. Active-active connections radically improve performance for servers at the same time. NETGEAR Virtual Chassis stacking technology
delivers resiliency, simplicity and better performance throughout the entire network.
ne and forwarding/routing
placement without manual
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(2 pages)
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