H3C S12500 sflow Configuration Examples

Transcription

1 H3C S12500 sflow Configuration Examples Copyright 2013 Hangzhou H3C Technologies Co., Ltd. All rights reserved. No part of this manual may be reproduced or transmitted in any form or by any means without prior written consent of Hangzhou H3C Technologies Co., Ltd. The information in this document is subject to change without notice.

2 Contents Introduction 1 Prerequisites 1 Example: Configuring sflow 1 Network requirements 1 Software version used 1 Configuration restrictions and guidelines 2 Configuration procedures 2 Verifying the configuration 2 Configuration files 3 Related documentation 3 i

3 Introduction This document provides Sampled Flow (sflow) configuration examples. sflow is a traffic monitoring technology. It provides the following sampling mechanisms: Flow sampling Obtains packet information. Counter sampling Obtains interface counter information. Prerequisites The configuration examples in this document were created and verified in a lab environment, and all the devices were started with the factory default configuration. When you are working on a live network, make sure you understand the potential impact of every command on your network. This document assumes that you have basic knowledge of H3C sflow. Example: Configuring sflow Network requirements As shown in Figure 1, configure flow sampling and counter sampling on GigabitEthernet 3/0/2 to monitor traffic on the port. The device sends sflow packets through GigabitEthernet 3/0/1 to the sflow collector. Figure 1 Network diagram Software version used This configuration example was created and verified on S12500-CMW710-R

4 Configuration restrictions and guidelines The device supports only the determine flow sampling mode. You can configure sflow only on Ethernet interfaces. Configuration procedures 1. Configure IP addresses for interfaces, as shown in Figure 1. (Details not shown.) 2. On the device, add GigabitEthernet 3/0/1 that connects the sflow collector to VLAN 30. (Details not shown.) 3. Configure the sflow agent and configure information about the sflow collector: Configure the IP address of the sflow agent. (This example uses the IP address of VLANinterface 30 as the IP address of the sflow agent.) [Device] sflow agent ip Configure information about the sflow collector: specify the sflow collector ID as 1, IP address as , UDP port number as 6343 (the default), and description as CLI. [Device] sflow collector 1 ip description CLI 4. Configure flow sampling: Set the flow sampling mode to determine and sampling rate to [Device] interface GigabitEthernet 3/0/2 [Device-GigabitEthernet3/0/2] undo shutdown [Device-GigabitEthernet3/0/2] sflow sampling-mode determine [Device-GigabitEthernet3/0/2] sflow sampling-rate 4000 Specify sflow collector 1 for flow sampling. [Device-GigabitEthernet3/0/2] sflow flow collector 1 5. Configure counter sampling: Set the counter sampling interval to 120 seconds. [Device-GigabitEthernet3/0/2] sflow counter interval 120 Specify sflow collector 1 for counter sampling. [Device-GigabitEthernet3/0/2] sflow counter collector 1 Verifying the configuration Display the sflow configuration and operation information. [Device] display sflow sflow datagram version: 5 Global Information: Agent IP: (CLI) Source address: Collector Information: ID IP Port Aging Size VPN-instance Description N/A 1400 CLI Port Information: Interface CID Interval(s) FID MaxHLen Rate Mode Status 2

5 GE3/0/ Determine Active The output shows the following: GigabitEthernet 3/0/2 enabled with sflow is active. The counter sampling interval is 120 seconds (the sflow agent collects traffic statistics from the port every 120 seconds. The flow sampling rate is 4000 (the sflow agent samples one packet from every 4000 packets). The sflow feature operates correctly. Configuration files [Device] display current-configuration sflow agent ip sflow collector 1 ip description "CLI" vlan 10 vlan 20 vlan 30 interface Vlan-interface30 ip address interface GigabitEthernet3/0/2 port link-mode bridge port access vlan 10 sflow sampling-rate 4000 sflow flow collector 1 sflow counter interval 120 sflow counter collector 1 interface GigabitEthernet3/0/1 port link-mode bridge port access vlan 30 Related documentation H3C S12500 Routing Switch Series Network Management and Monitoring Configuration Guide H3C S12500 Routing Switch Series Network Management and Monitoring Command Reference 3