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4 port troubleshooting, Roubleshooting – QTECH QSW-8300 Инструкция по настройке User Manual

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Switch1(config)#interface ethernet 1/0/7

Switch1(Config-If-Ethernet1/0/7)#bandwidth control 50 both

Switch2:

Switch2(config)#interface ethernet 1/0/9

Switch2(Config-If-Ethernet1/0/9)#speed-duplex force100-full

Switch2(Config-If-Ethernet1/0/9)#exit

Switch2(config)#interface ethernet 1/0/10

Switch2(Config-If-Ethernet1/0/10)#speed-duplex force1g-full

Switch2(Config-If-Ethernet1/0/10)#exit

Switch2(config)#monitor session 1 source interface ethernet1/0/8;1/0/9

Switch2(config)#monitor session 1 destination interface ethernet 1/0/10

Switch3:

Switch3(config)#interface ethernet 1/0/12

Switch3(Config-If-Ethernet1/0/12)#speed-duplex force100-full

Switch3(Config-If-Ethernet1/0/12)#exit

1.4 Port Troubleshooting

Here are some situations that frequently occurs in port configuration and the advised solutions:
Two connected fiber interfaces won’t link up if one interface is set to auto-negotiation but the

other to forced speed/duplex. This is determined by IEEE 802.3.

The following combinations are not recommended: enabling traffic control as well as setting

multicast limiting for the same port; setting broadcast, multicast and unknown destination

unicast control as well as port bandwidth limiting for the same port. If such combinations are

set, the port throughput may fall below the expected performance.

For Combo port, it supports copper-forced mode and sfp-forced mode (default mode), here,

copper port will not be up.