SNR S2989G-48TX-DC — настройка и отладка ULDP для сетевых устройств [79/553]

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S2989G-24TX Operation Manual Chapter 2 Layer 2 services

Configuration

debug uldp event

no debug uldp event

Enable or disable the debug switch of

event information.

debug uldp packet {receive|send}

no debug uldp packet {receive|send}

Enable or disable the type of messages

can be received and sent on all ports.

debug uldp {hello|probe|echo|

unidir|all} [receive|send] interface

ethernet <IFname>

no debug uldp {hello|probe|echo|

unidir|all} [receive|send] interface

ethernet <IFname>

Enable or disable the content detail of a

particular type of messages can be

received and sent on the specified port.

2.4.3

ULDP Function Typical Examples

Switch A

Figure 2-6 Fiber Cross Connection

In the network topology in Graph, port g1/0/1 and port g1/0/2 of SWITCH A as well as

port g1/0/3 and port g1/0/4 of SWITCH B are all fiber ports. And the connection is cross

connection. The physical layer is connected and works normally, but the data link layer is

abnormal. ULDP can discover and disable this kind of error state of link. The final result is

that port g1/0/1, g1/0/2 of SWITCH A and port g1/0/3, g1/0/4 of SWITCH B are all shut

down by ULDP. Only when the connection is correct, can the ports work normally (won’t

be shut down).

Switch A configuration sequence:

SwitchA(config)#uldp enable

SwitchA(config)#interface ethernet 1/0/1

SwitchA(Config-If-Ethernet1/0/1)#uldp enable

SwitchA(Config-If-Ethernet1/0/1)#exit

g1/0/1

g1/0/2

g1/0/3

g1/0/4

Switch B

PC2

PC1