cancel
Showing results for 
Search instead for 
Did you mean: 
cancel

Who Me Too'd this topic

Dual-Active detection Link Down on Virtual StackWise switches

Gabiche9
Level 1
Level 1

Hello,

 

I am currently facing an issue on my Virtual StackWise switches.

 

We have two WS-C3850-48XS-E configured with Virtual Stackwise.

There are two Virtual Stackwise Links of 10G as part of the SVL domain 1.

There is one fiber link 1G for Dual Active detection. The protocol is Fast-Hello.

 

We recently lost the Fast-Hello Link. I'm not confident of letting the switches in this state because split brain can now occur.

 

I tried to fix the Fast-Hello link but it doesn't want to be in Up state. The fiber has been check between the switches.

 

Do you know if the only way to get this link up is through a reboot of the switches ?

 

Any help would be really appreciated. You can find below the configuration of the Stackwise Link.

 

Thank you

 

switch#sh stackwise-virtual dual-active-detection
Dual-Active-Detection Configuration:
-------------------------------------
Switch  Dad port
------  ------------
1       TenGigabitEthernet1/0/44
2       TenGigabitEthernet2/0/44

 

switch#sh int te1/0/44
TenGigabitEthernet1/0/44 is down, line protocol is down (notconnect)

 


switch#sh stackwise-virtual link
Stackwise Virtual Link(SVL) Information:
----------------------------------------
Flags:
------
Link Status
-----------
U-Up D-Down
Protocol Status
---------------
S-Suspended P-Pending E-Error T-Timeout R-Ready
-----------------------------------------------
Switch  SVL     Ports                           Link-Status     Protocol-Status
------  ---     -----                           -----------     ---------------
1       1       TenGigabitEthernet1/0/45        U               R
                TenGigabitEthernet1/0/46        U               R
2       1       TenGigabitEthernet2/0/45        U               R
                TenGigabitEthernet2/0/46        U               R


switch#sh run int t1/0/44
Building configuration...

Current configuration : 112 bytes
!
interface TenGigabitEthernet1/0/44
 stackwise-virtual dual-active-detection
 description Fast-Hello Link
end

Who Me Too'd this topic