stacking 460g2 with vim-2x

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I am trying to stack two 460g2 via VIM-2x modules with exos 16.1.3, and have cabled them the VIM modules from S2 to S1 and S2 to S1 and they show link lights but do not form a stack. This works fine on the front panel ports but not the VIM. I noticed I had to run alternate as native mode is not supported on this module. Any thoughts on what I am missing? Thanks
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Dean Ferraro

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Posted 2 years ago

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Balaji Kumar Navaneethapandian, Employee

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We will use VIM-2x card for stacking when we have 1G switch for stacking. You can do show stacking-support to see which ports can be used for stacking. 
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Dean Ferraro

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Thanks. I will give native a shot on Monday, but am fairly confident I read these cards do not support native stacking. Also I can see the ports available for stacking as suggested, but couldn't find much documentation on the command syntax to change them. Any suggestions?
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Edward Tsui, Employee

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Hi Dean,

FYI, you may find useful configuration and troubleshooting guide here:

https://gtacknowledge.extremenetworks.com/articles/How_To/Getting-started-with-Summit-Stacking/
(Edited)
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Dean Ferraro

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Just found this same link as well. I will be trying to set back to Native and advise. Thanks
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Brandon Clay, Escalation Support Engineer

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Looks like I may have misread the initial question. I read it as VIM-2q, not VIM-2x.

The VIM-2x can be used for Alternate stacking with the 1G models of the X460-G2. The 10G X460-G2s use the front panel 10G ports for Alternate stacking. See the following table for which ports to use with which switches:
http://documentation.extremenetworks.com/flr/exos_21_1/stacking/r_support-for-alternative-stack-port...
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Dean Ferraro

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Ok tried Native mode to no avail. I do not seem to be able to stack via the VIM-2x module at all. The only successful stacking config that appears to be working, is with Alternate Stacking and the front panel ports 51 & 52. Can ports 53 and 54 be configured on the VIM-2x and be used for stacking? I am beginning to think not since the show stacking-support command only shows ports 51 & 52. Can stacking be performed with the VIM-2x module? If so how is this accomplished? Thanks
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Dean Ferraro

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Thank you Brandon. Based on the difficulties I am experiencing and the document you have provided, I am surmising that stacking is not possible via the VIM-2x with these switches.
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Brandon Clay, Escalation Support Engineer

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That's correct. The 10G X460-G2s can only be stacked via alternate stacking using the front ports (51 & 52).