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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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Default Settings for ARP Security

Default Settings for ARP Security

Table 10-5 describes the default settings for ARP security.

Table 10-5 Default settings for ARP security
Parameter Default Setting
Rate limit on ARP packets based on source MAC addresses The maximum rate of ARP packets from each source MAC address is set to 0, that is, the rate of ARP packets is not limited based on the source MAC address.
Rate limit on ARP packets based on source IP addresses The device allows a maximum of 30 ARP packets from the same source IP address to pass through per second.
Rate limit on ARP packets based on destination IP addresses The maximum rate of ARP packets sent to each destination IP address is set to 500 pps, that is, a maximum of 500 ARP packets with the same destination IP address are allowed to pass through per second.
Rate limit on ARP packets globally, in a VLAN, or on an interface
  • Global: 128 pps

  • In a VLAN or on an interface: Disabled

NOTE:

CE6870EI and CE6875EI do not support Rate limit on ARP packets on an interface.

Rate limit on ARP Miss messages based on source IP addresses The device can process a maximum of 30 ARP Miss messages triggered by IP packets from the same source IP address per second.
Rate limit on ARP Miss messages globally, in a VLAN, or on an interface
  • Global: The device can process a maximum of 3000 ARP Miss messages per second.

  • In a VLAN or on an interface: Disabled

Aging time of temporary ARP entries 5 seconds
Gratuitous ARP packet discarding Disabled
Strict ARP learning Disabled
Interface-based ARP entry limit The maximum number of ARP entries that an interface can dynamically learn is the same as the number of ARP entries supported by the device.
ARP entry fixing Disabled
DAI Disabled
MAC address consistency check in an ARP packet Disabled
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Updated: 2019-04-20

Document ID: EDOC1100074765

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