Extreme Networks ExtremeSwitching X440-G2 Series User Manual

Figure 118: Switches Connected to Each Other in a Ring Topology
Note that, while a physical ring connection may be present, a ring active topology exists only when all
nodes in the stack are active.
Daisy Chain Topology: Not Recommended for Stacking
Stackable switches can be connected in a daisy-chain topology. This is a ring topology with one of the
links disconnected, inoperative, or disabled. A daisy chain can be created when a link fails or a node
reboots in a ring topology, but the daisy chain topology is not recommended for normal operation.
We strongly recommend that your stack nodes be connected in a ring topology, not a daisy-chain
topology, for normal operation.
In Figure 119, the nodes delineated as the active topology are operating in a daisy-chain configuration,
even though there is physically a ring connection in the stack.
Building Stacks
ExtremeSwitching and Summit Switches: Hardware Installation Guide 141

Extreme Networks ExtremeSwitching X440-G2 Series Specifications

General

Form Factor	Rack-mountable
VLAN Support	Yes
Humidity	5% to 95% non-condensing
Model	X440-G2 Series
Port Type	Gigabit Ethernet
Switching Capacity	176 Gbps
Forwarding Rate	131 Mpps
Stacking	Yes, up to 8 switches
Layer Support	Layer 2/3
Operating Temperature	0°C to 50°C
Product Type	Switch
Jumbo Frames	9216 bytes
AC Power Supply	100-240 VAC, 50-60 Hz
Storage Temperature	-40°C to 70°C
Port Configuration	24 or 48 ports
Power over Ethernet (PoE)	Optional