sFlow scenario 2

In this scenario, two hosts connected to different switches send sFlow traffic to a collector. A LAG is used to connect the two switches. The physical topology of the network looks like this:

Procedure

Configure switch 1.
1. Enable sFlow globally.
  switch# config
  switch(config)# sflow
2. Set the sFlow agent IP address to 10.10.12.1.
  switch(config)# sflow agent-ip 10.10.12.1
3. Set the sFlow collector IP address to 10.10.12.2.
  switch(config)# sflow collector 10.10.12.2
4. Configure sFLow sampling rate and polling interval.
  switch(config)# sflow sampling 5000
  switch(config)# sflow polling 10
5. Create VLAN 8.
  switch(config)# vlan 8
  switch(config-vlan-8)# no shutdown
  switch(config)# exit
6. Define LAG 100 and assign VLAN vlan 8 to it.
  switch(config)# interface lag 100
  switch(config-lag-if)# no shutdown
  switch(config-lag-if)# no routing
  switch(config-lag-if)# vlan access 8
  switch(config-lag-if)# lacp mode active
7. Configure interface 1/1/1.
  switch(config)# interface 1/1/1
  switch(config-if)# no shutdown
  switch(config-lag-if)# no routing
  switch(config-if)# vlan access 8
8. Configure interface 1/1/2 and 1/1/3 as members of LAG 100.
  switch# (config)#interface 1/1/2
  switch(config-if)# no shutdown
  switch(config-if)# lag 100
  switch(config-if)# exit
  switch(config)# interface 1/1/3
  switch(config-if)# no shutdown
  switch(config-if)# lag 100
  switch(config-if)# exit
9. Configure interface 1/1/4 with IP address 10.10.12.1/24.
  switch# (config)#interface 1/1/4
  switch(config-if)# no shutdown
  switch(config-if)# ip address 10.10.12.1/24
  switch(config-if)# quit
10. Verify sFlow configuration.
switch# show sflow
sFlow Global Configuration
-----------------------------------------
sFlow enabled
Collector IP/Port/Vrf 10.10.10.2/6343/default
Agent Address 10.0.0.1
Sampling Rate 1024
Polling Interval 30
Header Size 128
Max Datagram Size 1400

sFlow Status
-----------------------------------------
Running - Yes

sFlow enabled on Interfaces:
-----------------------------------------
lag100

sFlow Statistics
-----------------------------------------
Number of Samples 200
Configure switch 2.
1. Create VLAN 8.
  switch(config)# vlan 8 switch(config-vlan-8)# no shutdown switch(config)# exit
2. Define LAG 100 and assign VLAN vlan 8 to it.
  switch(config)# interface lag 100
  switch(config-lag-if)# no shutdown
  switch(config-lag-if)# no routing
  switch(config-lag-if)# vlan access 8
  switch(config-lag-if)# lacp mode active
3. Configure interface 1/1/1.
  switch(config)# interface 1/1/1
  switch(config-if)# no shutdown
  switch(config-lag-if)# no routing
  switch(config-if)# vlan access 8
4. Configure interface 1/1/2 and 1/1/3 as members of LAG 100.
  switch# (config)#interface 1/1/2
  switch(config-if)# no shutdown
  switch(config-if)# lag 100
  switch(config-if)# exit
  switch(config)-if# interface 1/1/3
  switch(config-if)# no shutdown
  switch(config-if)# lag 100
  switch(config-if)# exit