Manualshelf

Reference Guide

ManualsBrandsDell ManualsAccess PlatformsPowerSwitch S6000
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sFlow | 769
• FTOS exports all sFlow packets to the Collector. A small sampling rate can equate to a large number of
exported packets. A backoff mechanism automatically is applied to reduce this amount. Some sampled
packets may be dropped when the exported packet rate is high and the backoff mechanism is about to
or is starting to take effect. The dropEvent counter, in the sFlow packet, is always be zero.
• In sFlow datagram., community list and local preference fields are not filled in the extended gateway
element.
• In sFlow datagram, the 802.1P source priority field is not filled in the extended switch element.
• Only Destination and Destination Peer AS numbers are packed in the dst-as-path field in the extended
gateway element.
• If the packet being sampled is redirected using policy-based routing (PBR), the sFlow datagram may
contain incorrect extended gateway/router information.
• The source VLAN field in the extended switch element is not packed in the case of a routed packet.
• The destination VLAN field in the extended switch element is not packed in the case of a Multicast
packet.
• On the S-Series, up to 700 packets can be sampled and processed per second.
Enable and Disable sFlow
By default, sFlow is disabled globally on the system. To enable sFlow globally, use the sflow enable
command in CONFIGURATION mode. To disable sFlow globally, use the no version of this command .
Enable and Disable on an Interface
By default, sFlow is disabled on all interfaces. To enable sFlow on a specific interface, use the sflow
enable command in INTERFACE mode. Use the no version of this command to disable sFlow on an
interface. This command is supported on physical ports and link aggregation group (LAG) ports.
sFlow Show Commands
FTOS includes the following sFlow display commands:
• Show sFlow Globally
• Show sFlow on an Interface
Command Syntax Command Mode Usage
[no] sflow enable CONFIGURATION Enable sFlow globally.
Command Syntax Command Mode Usage
[no] sflow enable INTERFACE Enable sFlow on an interface.