3 ipv6 troubleshooting -174, Arp -174, 1 introduction to arp -174 – QTECH QSW-2800 Инструкция по настройке User Manual

Page 188: 2 arp configuration task list -174, 3 arp troubleshooting -174, 3 ipv6 troubleshooting, 2 arp configuration task list, 3 arp troubleshooting

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174

(4) Delete all entries in IPv6 neighbor table

Command

Explanation

Admin Mode

clear ipv6 neighbors

Clear all static neighbor table entries.

22.2.3 IPv6 Troubleshooting

If the connected PC has not obtained IPv6 address, you should check the RA announcement

switch (the default is turned off)

22.3 ARP

22.3.1 Introduction to ARP

ARP (Address Resolution Protocol) is mainly used to resolve IP address to Ethernet MAC

address. Switch supports static ARP configuration.

22.3.2 ARP Configuration Task List

ARP Configuration Task List:

1. Configure static ARP

1. Configure static ARP

Command

Explanation

Interface Configuration Mode

arp <ip_address> <mac_address>

no arp <ip_address>

Configures a static ARP entry; the no

command deletes a static ARP entry.

22.3.3 ARP Troubleshooting

If ping from the switch to directly connected network devices fails, the following can be used to

check the possible cause and create a solution.

Check whether the corresponding ARP has been learned by the switch.

If ARP has not been learned, then enabled ARP debugging information and view the

sending/receiving condition of ARP packets.

Defective cable is a common cause of ARP problems and may disable ARP learning.

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