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Packets drop when perform V-motion to failover

Latest reply: Apr 20, 2020 06:56:30 1934 4 0 0
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Hello everyone,

There is a problem when we perform V-motion to failover server between ESX server, we found the Guest Server could not get online until we disable/enable the VM server network, or wait until it up (around 10 ping time out). Please help me. Thank you!

6ebc821ea4bf4bee897103c56a0c0feb

Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=28ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time<1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Request timed out.
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Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=2ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time<1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time<1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time<1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time<1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time<1ms TTL=123
Reply from 172.21.xx.xx: bytes=32 time=1ms TTL=123

Ping statistics for 172.21.xx.xx:
    Packets: Sent = 88, Received = 62, Lost = 26 (29% loss),
Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 28ms, Average = 1ms
Control-C

 

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Next: Etherchannel
user_54585
Created Mar 14, 2014 03:27:52 Helpful(0) Helpful(0)

analysis:

Confirm the mac address is change or not after failover.

Before Failover:

Switch 1:
[XX-10GSSW01]display arp | i 172.21.xx.xx
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE INTERFACE      VPN-INSTANCE   
                                          VLAN
------------------------------------------------------------------------------
172.21.xx.xx    0050-56b1-5402  20        D-0  Eth-Trunk2
------------------------------------------------------------------------------
Total:110       Dynamic:105     Static:0    Interface:5 
[XX-10GSSW01]display arp | i 172.21.xx.xx
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE INTERFACE      VPN-INSTANCE   
                                          VLAN
------------------------------------------------------------------------------
172.21.xx.xx    0050-56b1-5402  20        D-0  Eth-Trunk2
------------------------------------------------------------------------------
Total:109       Dynamic:104     Static:0    Interface:5 

Switch 2:
[XX-10GSSW02]display arp | i 172.21.xx.xx
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE INTERFACE      VPN-INSTANCE   
                                          VLAN
------------------------------------------------------------------------------
------------------------------------------------------------------------------
Total:64        Dynamic:59      Static:0    Interface:5 



Before Failover:
Switch 1:
[XX-10GSSW01]display arp | i 172.21.xx.xx
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE INTERFACE      VPN-INSTANCE   
                                          VLAN
------------------------------------------------------------------------------
172.21.xx.xx    0050-56b1-5402  20        D-0  Eth-Trunk2
------------------------------------------------------------------------------
Total:109       Dynamic:104     Static:0    Interface:5 

Switch 2:
[XX-10GSSW02]display arp | i 172.21.xx.xx
IP ADDRESS      MAC ADDRESS     EXPIRE(M) TYPE INTERFACE      VPN-INSTANCE   
                                          VLAN
------------------------------------------------------------------------------
------------------------------------------------------------------------------
Total:64        Dynamic:59      Static:0    Interface:5

Using the mac-address update arp command, it can enable the S6700 to update outbound interfaces in ARP entries when outbound interfaces in MAC address entries change.

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user_54585
Created Mar 14, 2014 03:30:53 Helpful(1) Helpful(1)

Reply 2 #

Solution:

Add "mac-address update arp" to these switchs.
<HUAWEI> system-view
[HUAWEI] mac-address update arp

 

Using the mac-address update arp command, you can enable the S6700 to update outbound interfaces in ARP entries when outbound interfaces in MAC address entries change.
Using the undo mac-address update arp command, you can disable this function.
By default, the S6700 does not update outbound interfaces in ARP entries when outbound interfaces in MAC address entries change.

 

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barbarasafaye
Created Apr 19, 2020 21:09:01 Helpful(10) Helpful(10)

thanks for taking you time!
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Peterhof
MVE Created Apr 20, 2020 06:56:30 Helpful(0) Helpful(0)

Thank you!

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