4 arp, 1 introduction to arp, 2 arp configuration task list – QTECH QSW-3400 Инструкция по настройке User Manual

Page 211: 3 arp troubleshooting

Advertising
background image

+7(495) 797-3311 www.qtech.ru
Москва, Новозаводская ул., 18, стр. 1

210

Next hop use the partner IP address
Switch(config)#ip route 10.1.1.0 255.255.255.0 10.1.2.1
Next hop use the partner IP address
Switch(config)#ip route 10.1.4.0 255.255.255.0 10.1.3.1

Configuration of layer3 SwitchB
Switch#config
Switch(config)#ip route 0.0.0.0 0.0.0.0 10.1.3.2

In this way, ping connectivity can be established between PC-A and PC-C, and PC-B and PC-

C.

24.4 ARP

24.4.1 Introduction to ARP

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

address. Switch supports static ARP configuration.

24.4.2 ARP Configuration Task List

ARP Configuration Task List:

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.

24.4.3 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.

Advertising