Hi Mark,

Bronkenolo · ‎05-18-2017

Hi, I'm writing this question because I was not able to find any document or forum discussion about the topic in title, hope nobody has already asked for it.

My point is: I'm trying to insert a couple of Nexus C9372PX-E into my network, vPC-inning them with other equipment.

In choosing the local interfaces for vPCs, if they were modular switches, I would select interfaces from different modules for module redundancy.

Given that they are not modular, I thought to choose interfaces from different ASIC, at least.

My problem is that I'm not finding any document explaining how the physical interfaces are distributed/grouped among ASICs.

Am I missing something, or could anyone provide help?

I would appreciate it, thank you.

BR

Mark Malone · ‎05-18-2017

see this doc below , not sure if it will work on your specific model but could try it , bit different than the 7ks and 5ks in how you view them

http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus9000/sw/6-x/troubleshooting/guide/b_Cisco_Nexus_9000_Series_NX-OS_Troubleshooting_Guide/b_Cisco_Standalone_Series_NX-OS_Troubleshooting_Guide_chapter_01101.html

show system internal interface counters module module-number [nz]—Displays the rates for HG or fabric links on a module. The nz option displays only non-zero counters.

switch# show system internal interface counters module 22 nz
Internal Port Counters (150 secs rate) for Slot: 22
====================================================

Interface ASIC ASIC  BCM  TxBitRate(BwUtil) TxPktRate RxBitRate(BwUtil) RxPktRate
          Port Inst Port     (bps)            (pps)       (bps)          (pps)
----------------------------------------------------------------------------------
ii22/1/10  HG9    0   10     0(  0.00)         0       33064(  0.00)      17

switch# show system internal interface counters module 22 
Internal Port Counters (150 secs rate) for Slot: 22
====================================================

Interface ASIC ASIC  BCM  TxBitRate(BwUtil) TxPktRate RxBitRate(BwUtil) RxPktRate
          Port Inst Port      (bps)           (pps)       (bps)           (pps)
----------------------------------------------------------------------------------
ii22/1/1  HG0    0    1       0(  0.00)        0         0(  0.00)         0
ii22/1/2  HG1    0    2       0(  0.00)        0         0(  0.00)         0
ii22/1/3  HG2    0    3       0(  0.00)        0         0(  0.00)         0
ii22/1/4  HG3    0    4       0(  0.00)        0         0(  0.00)         0
ii22/1/5  HG4    0    5       0(  0.00)        0         0(  0.00)         0
ii22/1/6  HG5    0    6       0(  0.00)        0         0(  0.00)         0
ii22/1/7  HG6    0    7       0(  0.00)        0         0(  0.00)         0
ii22/1/8  HG7    0    8       0(  0.00)        0         0(  0.00)         0
ii22/1/9  HG8    0    9       0(  0.00)        0         0(  0.00)         0
ii22/1/10  HG9    0   10      0(  0.00)        0     30888(  0.00)        12
ii22/1/11 HG10    0   11      0(  0.00)        0         0(  0.00)         0
ii22/1/12 HG11    0   12      0(  0.00)        0         0(  0.00)         0
ii22/1/13 HG12    0   13      0(  0.00)        0         0(  0.00)         0
ii22/1/14 HG13    0   14      0(  0.00)        0         0(  0.00)         0
ii22/1/15 HG14    0   15      0(  0.00)        0         0(  0.00)         0
ii22/1/16 HG15    0   16      0(  0.00)        0         0(  0.00)         0
ii22/1/17 HG16    0   17      0(  0.00)        0         0(  0.00)         0
ii22/1/18 HG17    0   18      0(  0.00)        0         0(  0.00)         0
ii22/1/19 HG18    0   19      0(  0.00)        0         0(  0.00)         0
ii22/1/20 HG19    0   20      0(  0.00)        0         0(  0.00)         0
ii22/1/21 HG20    0   21      0(  0.00)        0         0(  0.00)         0
ii22/1/22 HG21    0   22      0(  0.00)        0         0(  0.00)         0
ii22/1/23 HG22    0   23      0(  0.00)        0         0(  0.00)         0
ii22/1/24 HG23    0   24      0(  0.00)        0         0(  0.00)         0
ii22/1/33  HG0    1    1      0(  0.00)        0         0(  0.00)         0
ii22/1/34  HG1    1    2      0(  0.00)        0         0(  0.00)         0
ii22/1/35  HG2    1    3      0(  0.00)        0         0(  0.00)         0
ii22/1/36  HG3    1    4      0(  0.00)        0         0(  0.00)         0
ii22/1/37  HG4    1    5      0(  0.00)        0         0(  0.00)         0
ii22/1/38  HG5    1    6      0(  0.00)        0         0(  0.00)         0
ii22/1/39  HG6    1    7      0(  0.00)        0         0(  0.00)         0
ii22/1/40  HG7    1    8      0(  0.00)        0         0(  0.00)         0
ii22/1/41  HG8    1    9      0(  0.00)        0         0(  0.00)         0
ii22/1/42  HG9    1   10      0(  0.00)        0         0(  0.00)         0
ii22/1/43 HG10    1   11      0(  0.00)        0         0(  0.00)         0
ii22/1/44 HG11    1   12      0(  0.00)        0         0(  0.00)         0
ii22/1/45 HG12    1   13      0(  0.00)        0         0(  0.00)         0
ii22/1/46 HG13    1   14      0(  0.00)        0         0(  0.00)         0
ii22/1/47 HG14    1   15      0(  0.00)        0         0(  0.00)         0
ii22/1/48 HG15    1   16      0(  0.00)        0         0(  0.00)         0
ii22/1/49 HG16    1   17      0(  0.00)        0         0(  0.00)         0
ii22/1/50 HG17    1   18      0(  0.00)        0         0(  0.00)         0
ii22/1/51 HG18    1   19      0(  0.00)        0         0(  0.00)         0
ii22/1/52 HG19    1   20      0(  0.00)        0         0(  0.00)         0
ii22/1/53 HG20    1   21      0(  0.00)        0         0(  0.00)         0
ii22/1/54 HG21    1   22      0(  0.00)        0         0(  0.00)         0
ii22/1/55 HG22    1   23      0(  0.00)        0         0(  0.00)         0
ii22/1/56 HG23    1   24      0(  0.00)        0         0(  0.00)         0

Bronkenolo · ‎05-18-2017

Hi Mark,

first of all: thank you for your rapid reply.
I'm not sure to fully understand the doc you linked, for a couple of reasons:

- This doc troubleshoots a running situation, while I cannot do it because the N9Ks are not in production yet, and I do not have the opportunity to test them first in the client environment.

I see the interface and ASIC port columns, but I don't understand how to infer their coupling.

- The game changing info here could be to infer how the interface grouping into ASIC or line card has been made for Nexus 9300 models.
The only doc I found regarding line cars and fabric module architecture is below, but it refers to a particular 9500...it shows front panel ports are put in groups of 6, but the big question is: could be it a reliable information also for 9300s?

http://www.cisco.com/c/en/us/products/collateral/switches/nexus-9000-series-switches/white-paper-c11-738392.html?cachemode=refresh

Meanwhile, thank you (and everybody else that may participate) for helping!
BR

ASIC interface distribution on Nexus 9300