Cisco 6880-X-LE No VSLOTs Left?

[mgonzalezvt]

I am trying to create a new fiber extension off of my 6880 X LE catalysts but the fex is stuck at "Registration" and the logs show: 

%FEXMGR-SW1-3-FEXMGR_MAX_VSLOT_ALLOC: No VSLOTs are left for new module to allocate. Enable Temp VSLOT to allow 'renumber' of module if in case of RMA.

How do I change the maximum number of VSLOTs? I don't see any documentation on this.

[marce1000]

 - Please try :      Switch# module provision update fex fex_id temp-vslot-allow enable

 M.

[mgonzalezvt]

Hi, thank you I'll give that a shot but what I probably should have said first is that I am trying to link up 4 more switches inside that fiber extension. It's my (limited) understanding that that temp slot will work for 1 switch but not all 4, right? Is there no option to raise the "Max VSLOT" allocation?

[marce1000]

 - Note  that connecting switches to fex ports is not supported , to get an overview of available vslots usage issue : Switch# show fex system platform usage 

 M.

[mgonzalezvt]

FEX id usage details
Fex-ids inuse: 106, 107, 170, 171, 180, 181, 160, 140, 150, 151, 130, 131, 121, 122
Fex-ids online: 106, 107, 170, 171, 180, 181, 160, 140, 150, 151, 130, 131, 121, 122
Total  Used  Free
----- ---- ----
42      14      28

FEX slot usage details
FEX-id Switch-id Vslot Pslot Status
------ --------- ----- ----- ------
106 3 58 1 In-use
106 3 61 2 In-use
106 3 62 4 In-use
106 3 66 3 In-use
106 3 67 5 In-use
107 4 68 1 In-use
121 17 53 3 In-use
121 17 71 1 In-use
121 17 85 2 In-use
122 18 83 2 In-use
130 13 52 1 In-use
130 13 54 2 In-use
130 13 55 3 In-use
130 13 84 4 In-use
131 14 51 1 In-use
140 10 50 2 In-use
140 10 56 3 In-use
140 10 57 4 In-use
140 10 91 1 In-use
150 11 59 1 In-use
150 11 60 2 In-use
150 11 63 3 In-use
150 11 64 4 Reserved
151 12 65 1 In-use
151 12 90 2 In-use
160 9 86 2 In-use
160 9 87 1 In-use
160 9 88 3 In-use
160 9 89 4 In-use
170 5 69 1 In-use
170 5 70 2 In-use
170 5 72 3 In-use
170 5 73 4 In-use
171 6 74 1 In-use
171 6 75 2 In-use
180 7 79 1 In-use
180 7 80 2 In-use
180 7 81 3 In-use
180 7 82 4 In-use
181 8 76 1 In-use
181 8 77 2 In-use
181 8 78 3 In-use

Total Used Reserved Temp-Use/Free Free
----- ---- -------- ------------- ----
47        41         1             0/5               5

[marce1000 · Accepted solution]

 - Use latest (advisory) release on the 6880 : https://software.cisco.com/download/home/284855056/type/280805680/release/15.5.1-SY8  , also referring to :https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6800ia-switch/white_paper_c11-728265.html

  >...

The term “FEX ID” denotes an Instant Access client stack or a Fabric PortChannel. With earlier releases, the 21 clients had to be deployed in such a way that there were a total of 12 FEX IDs or 12 stacks. With the 15.2(1)SY release, there is no restriction on how the 42 clients can be deployed. (They can all be standalone clients or configured in stacks.)

The following output shows a fully scaled Instant Access system and the corresponding platform resources used.

6880X-VSS#show fex system platform usage

                                             Therefore check if using latest software version can help.

 M.

[mgonzalezvt]

So what I am ultimately looking at is, that there is a maximum of 42 clients and that maximum cannot be altered? If I need to have more network capacity, what would be the most logical way to go beyond 42? Another catalyst? Thanks for all your help with this, I'll close this out shortly.

[marce1000]

               >...what would be the most logical way to go beyond 42

 - Not sure on that , you probably need to involve TAC for that question.

 M.