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Switch error down

Created: Feb 26, 2020 07:27:53Latest reply: Feb 26, 2020 07:43:03 110 1 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hi, guys!

Our customer has a CE6850-EI switch connected to several servers. Whenever the server restarts, the switch interface to which the server is connected becomes unavailable. Check that the interface status is in error down state. It does not return to normal until the interface is restarted.

How can we solve this problem? Thanks.

 

[HW-CE6800-C01]dis interface 10GE1/0/9

10GE1/0/9 current state : ERROR DOWN(link-flap) (ifindex: 43)

Line protocol current state : DOWN

Description: link to renliziyuan2

Switch Port, PVID : 174, TPID : 8100(Hex), The Maximum Frame Length is 9216

Internet protocol processing : disabled

IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is

xxx8-4xx8-5xxx

Port Mode: COMMON FIBER, Port Split:

Speed : 1000, Loopback: NONE

Duplex: FULL, Negotiation: ENABLE

Mdi :

Last physical up time : 2020-02-22 06:22

Last physical down time : 2020-02-22 14: 22:12

Current system time: 2020-02-22 06:22


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Popeye_Wang
Admin Created Feb 26, 2020 07:43:03 Helpful(0) Helpful(0)

Hello Hobbit,

The output 10GE1/0/9 current state : ERROR DOWN(link-flap) (ifindex: 43)  indicates that the error down is triggered by link flapping.

By default, link flapping protection is enabled on an interface. When the server is restarted, if the interface flaps five times in 10s, the device will set it's status to Error-Down.

You can use the port link-flap interval command to set the link flapping detection interval and the maximum number of link flapping events on an interface.

For example:

# Set the link flapping detection interval and maximum number of link flapping events on 10GE1/0/9 to 50s and 10.

<HUAWEI> system-view

[~HUAWEI] interface 10ge 1/0/9

[~HUAWEI-10GE1/0/1] port link-flap interval 50 threshold 10

Or you can just disable the link flapping protection by using the undo port link-flap trigger error-down command.

Any further questions, let us know.

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Popeye_Wang
Popeye_Wang Admin Created Feb 26, 2020 07:43:03 Helpful(0) Helpful(0)

Hello Hobbit,

The output 10GE1/0/9 current state : ERROR DOWN(link-flap) (ifindex: 43)  indicates that the error down is triggered by link flapping.

By default, link flapping protection is enabled on an interface. When the server is restarted, if the interface flaps five times in 10s, the device will set it's status to Error-Down.

You can use the port link-flap interval command to set the link flapping detection interval and the maximum number of link flapping events on an interface.

For example:

# Set the link flapping detection interval and maximum number of link flapping events on 10GE1/0/9 to 50s and 10.

<HUAWEI> system-view

[~HUAWEI] interface 10ge 1/0/9

[~HUAWEI-10GE1/0/1] port link-flap interval 50 threshold 10

Or you can just disable the link flapping protection by using the undo port link-flap trigger error-down command.

Any further questions, let us know.

View more
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  • convention:

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