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MLAG

Created: Feb 18, 2021 07:38:28Latest reply: Feb 19, 2021 06:30:50 272 13 0 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hello everyone 


I wanna to know about what is the meaning of heartbeat state in MLAG 

and my switch configuration mlag status is heartbeat state : LOST 


Can you help me ?? 

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Featured Answers
DDSN
Admin Created Feb 19, 2021 06:30:50

Hi Didan123,
If two devices are connected, the two devices cannot exchange heartbeat packets, M-LAG cannot be set up, and the two devices are independent. Check your configuration and link status.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100156552&id=EN-US_TASK_0241516909&lang=en
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100156552&id=EN-US_TASK_0241516910&lang=en
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Didan123
Didan123 Created Feb 19, 2021 10:01:16 (0) (0)
Hi

Thanks for your answer, that means the source ip and the remote ip for mlag peer link should can ping right? because in my case the source ip and the remote ip cannot ping each other  
DDSN
DDSN Reply Didan123  Created Feb 20, 2021 00:55:56 (0) (0)
The source IP address and peer IP address must be pinged. Otherwise, heartbeat packets cannot be exchanged. Check the configuration according to the preceding configuration.  
All Answers
DDSN
DDSN Admin Created Feb 18, 2021 07:43:16

Hi Didan123,
Please wait patiently. Our engineers are looking for answers to your questions.
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umaryaqub
umaryaqub MVE Author Created Feb 18, 2021 07:59:37

Hi,

Heartbeat basically describes the state of MLAG. A heartbeat line between M-LAG master and backup devices is added to ensure that heartbeat packets can be transmitted normally.
You can get more details from following link with configuration examples:

https://support.huawei.com/enterprise/en/doc/EDOC1000102427?section=k007
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Didan123
Didan123 Created Feb 18, 2021 08:02:24 (0) (0)
Hii,

i've configure 2 spine with mlag and i've test connectivity to leaf and the status is active active, but in hearbeat status is LOST, what should i can do?  
umaryaqub
umaryaqub Reply Didan123  Created Feb 18, 2021 08:36:05 (0) (0)
LOST status mean The heartbeat status is offline. If you want to enable monitoring, you need to enable heartbeat status monitoring.  
Didan123
Didan123 Reply umaryaqub  Created Feb 18, 2021 09:09:01 (0) (0)
how to enable the heartbeat?  
umaryaqub
umaryaqub Reply Didan123  Created Feb 18, 2021 10:32:18 (0) (0)
Hi,

You can check under "Configuring an Interface as a Peer-link Interface" on https://support.huawei.com/enterprise/en/doc/EDOC1000102427?section=k007#dc_cfg_eth-trunk_0088  
A%20network%20professional%20eager%20to%20learn%20and%20help.I%20have%208%20years%20of%20network%20experience%20and%20I%20am%20working%20with%20Huawei%20VAP%20and%20looking%20after%20IP%20Projects%20design.
DDSN
DDSN Admin Created Feb 18, 2021 09:31:36

Hi Didan123,
heartbeat state LOST: indicates that the heartbeat status is offline. In this case, the device cannot receive heartbeat packets from the peer device. Check your configuration by following the configuration link below:
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100156552&id=EN-US_TASK_0241516909&lang=en
I hope it helps!
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Iyad
Iyad Created Feb 18, 2021 19:41:00

Hi Didan123

M-LAG heartbeat packets are used to detect dual master devices when the peer-link fails. The two devices send M-LAG synchronization packets through the peer-link to synchronize information from each other in real time. M-LAG synchronization packets include MAC address entries and ARP entries, so a fault of any device does not affect traffic forwarding.

The heartbeat interval specifies the period between the transmission of successive keepalive messages. Each M-LAG switch transmits keepalive messages and monitors message reception from its peer. Heartbeat messages flow independently in both directions between the M-LAG peers. The heartbeat timeout is reset when the switch receives a keepalive message. If the heartbeat timeout expires, the switch disables M-LAG under the premise that the peer switch is not functioning.If a peer stops receiving heartbeat messages within the expected time frame (30 seconds), the other peer can assume it no longer functions and without intervention or repair, the M-LAG becomes disabled. Both switches revert to their independent state.

 

For your problem in heartbeat statue

The DFS dual-active detection message is lost. Check the source address configuration or link configuration of the local or remote switch.

DAD packets are lost. Check the source address or link status of the local or remote device

 

Impact on the System

After the peer-link becomes faulty, DAD may become unavailable.

 

Possible Causes

The source address of the local or remote device is incorrect or the link status is abnormal

 

Procedure

Correct the DAD configuration or link status.


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Didan123
Didan123 Created Feb 19, 2021 01:16:58 (0) (0)
Hi

Thanks for your answer, that means the source ip and the remote ip for mlag peer link should can ping right? because in my case the source ip and the remote ip cannot ping each other  
Iyad
Iyad Reply Didan123  Created Feb 19, 2021 17:31:02 (0) (0)
The Procedure For running M-LAG Through the Root Bridge

Configure root bridge and bridge ID
Configure source and destination as the root bridge with same bridge ID on the STP network . so that the two devices are simulated into one root bridge

Configure Dynamic Fabric Service (DFS)
Configure IP addresses for main interfaces on source and destination to ensure transmission of heartbeat packets of M-LAG master and backup devices

Configure peer-link
Configure M-LAG on source and des 
DDSN
DDSN Admin Created Feb 19, 2021 06:30:50

Hi Didan123,
If two devices are connected, the two devices cannot exchange heartbeat packets, M-LAG cannot be set up, and the two devices are independent. Check your configuration and link status.
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100156552&id=EN-US_TASK_0241516909&lang=en
https://support.huawei.com/hedex/hdx.do?docid=EDOC1100156552&id=EN-US_TASK_0241516910&lang=en
View more
  • x
  • convention:

Didan123
Didan123 Created Feb 19, 2021 10:01:16 (0) (0)
Hi

Thanks for your answer, that means the source ip and the remote ip for mlag peer link should can ping right? because in my case the source ip and the remote ip cannot ping each other  
DDSN
DDSN Reply Didan123  Created Feb 20, 2021 00:55:56 (0) (0)
The source IP address and peer IP address must be pinged. Otherwise, heartbeat packets cannot be exchanged. Check the configuration according to the preceding configuration.  

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