Administrator Guide

• Only Destination and Destination Peer AS number are packed in the dst-as-path eld in 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 virtual local area network (VLAN) eld in the extended switch element is not packed in case of routed packet.
• The destination VLAN eld in the extended switch element is not packed in a Multicast packet.
• Up to 700 packets are sampled and processed per second.
Enabling and Disabling sFlow
By default, sFlow is disabled globally on the system.
Use the following command to enable sFlow globally.
• Enable sFlow globally.
CONFIGURATION mode
[no] sflow enable
Enabling and Disabling sFlow on an Interface
By default, sFlow is disabled on all interfaces.
This CLI is supported on physical ports and link aggregation group (LAG) ports.
To enable sFlow on a specic interface, use the following command.
• Enable sFlow on an interface.
INTERFACE mode
[no] sflow enable
To disable sFlow on an interface, use the no version of this command.
Enabling sFlow Max-Header Size Extended
To congure the maximum header size of a packet to 256 bytes, use the following commands:
• Set the maximum header size of a packet.
CONFIGURATION mode
INTERFACE mode
sflow max-header-size extended
By default, the maximum header size of a packet is 128 bytes. When sflow max-header-size extended is enabled, 256 bytes
are copied. These bytes are useful for VxLAN, NvGRE, IPv4, and IPv6 tunneled packets.
NOTE
: Interface mode conguration takes priority.
• To reset the maximum header size of a packet, use the following command
[no] sflow max-header-size extended
• View the maximum header size of a packet.
show running-config sflow
Example of the show sflow command when the sflow max-header-size extended is congured globally
Dell(conf-if-te-1/10)#show sflow
sFlow services are enabled
Egress Management Interface sFlow services are disabled
Global default sampling rate: 32768
848
sFlow