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Configuration Guide - Security

CloudEngine 8800, 7800, 6800, and 5800 V200R005C10

This document describes the configurations of Security, including ACL, local attack defense, MFF, attack defense, traffic suppression and storm control, ARP security, Port security, DHCP snooping, ND snooping, PPPoE+, IPSG, SAVI, separating the management plane from the service plane, security risks.
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Example for Configuring Traffic Suppression

Example for Configuring Traffic Suppression

Networking Requirements

As shown in Figure 9-3, Switch A is connected to a Layer 2 network and a Layer 3 router. Switch A needs to be configured to prevent broadcast storms caused by a large number of broadcast packets, multicast packets, or unknown unicast packets forwarded at Layer 2.

Figure 9-3 Networking diagram of traffic suppression

Configuration Roadmap

The configuration roadmap is as follows:

  1. Configure traffic suppression in the view of 10GE1/0/1 to prevent broadcast storms caused by a large number of broadcast packets, multicast packets, or unknown unicast packets forwarded at Layer 2.

Procedure

  1. Enter the interface view.

    <HUAWEI> system-view
    [~HUAWEI] sysname SwitchA
    [*HUAWEI] commit
    [~SwitchA] interface 10ge 1/0/1

  2. Configure traffic suppression for broadcast packets. Set the CIR for broadcast traffic to 100 kbit/s.

    [~SwitchA-10GE1/0/1] storm suppression broadcast cir 100

  3. Set bandwidth percentage for multicast packets to 80%.

    [*SwitchA-10GE1/0/1] storm suppression multicast 80

  4. Configure traffic suppression for unknown unicast packets. Set CIR for unknown unicast packets to 100 kbit/s.

    [*SwitchA-10GE1/0/1] storm suppression unknown-unicast cir 100
    [*SwitchA-10GE1/0/1] commit
    [~SwitchA-10GE1/0/1] quit

Configuration Files

Switch A configuration file

#
sysname SwitchA
#
interface 10GE1/0/1
 storm suppression unknown-unicast cir 100 kbps
 storm suppression multicast 80
 storm suppression broadcast cir 100 kbps  
#
return
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Updated: 2019-04-20

Document ID: EDOC1100074765

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