User's Manual

Virtual Connect networks 111
sFlow Settings (General) screen
The sFlow feature allows network administrators to monitor and analyze the network traffic flow in the
datacenter. The sFlow settings can be modified by users with Network, Domain, or Server user role
permissions. VC sends sFlow datagrams containing traffic information to an external sFlow collector.
Clicking another link in the pull-down menu or left navigation tree causes current edits that have not been
applied to be lost.
If the domain stacking mode is configured with horizontal or primary slice stacking links, be sure the
configured network, sFlow receiver, and module are all in the same logical interconnect.
For example, if bay 1 and bay 2 are populated, they form a logical interconnect. Only ports in this logical
interconnect are available for sFlow configuration.
For more information on the domain stacking mode, see "Stacking links ("Stacking Links screen" on page
231)."
IMPORTANT: For sFlow to function properly, the VLAN ID used for the sFlow network, whether
tagged or native/untagged, cannot be the native VLAN ID on any other port on the ToR switch
that connects back to the same VC module.
For example, if three links are connected between a VC module and a ToR switch and one of
those links is a dedicated or tunneled network and sFlow is assigned to that network, sFlow traffic
is sent untagged. The native VLAN ID for the ToR port for that link cannot be the native VLAN ID
of the other two ToR ports that are connected to that same VC module.
For mapped Shared Uplink Sets, the sFlow traffic is sent tagged. The VLAN ID used for the
network that carries the sFlow traffic cannot be the native VLAN ID for any other ToR port
connected to the same VC module.
sFlow Status
Shows the current status of the sFlow module. Click Refresh to refresh the status.
Network Configuration