interpreting show controllers ingressq capacity

[arulgobi1]

anyone enlighten me how i can interpret these values, i need to analyze any bottleneck on the CRS-3 8-10GbE slot.

Following command is on the fabric managment documenation but no clear explanation on these values :

http://www.cisco.com/en/US/docs/routers/crs/software/crs_r3.9/adv_system/command/reference/ar39fabr.html#wp1080588

show controllers ingressq capacity 0 location 0/0/cpu0

Mon Apr 15 12:37:42.274 QAT

ingressq capacity table: Port Max capacity

Table id: 0

4       8       12      16      20      24      28      32     

36      40      44      48      52      56      60      64     

68      72      76      88      108     136     172     216    

276     348     436     552     700     884     1116    1408   

1780    2248    2836    3584    4528    5724    7228    9136   

11540   14580   18420   23272   29404   37152   46936   59304  

74924   94664   119600  151108  190916  241212  304756  385040 

486472  614628  776548  981120  1239584 1566140 1978724 2500000

Further if anyone point me some documention related to troubleshooting packet drops / PSE / Queue managment . 

Thanks in Advance,

Gobinath.

[smilstea]

Hi Gobinath,

This is not a command to worry yourself with.You also do not need to worry about the fabric queues. The only thing you should concern youself with is if the fabric is working and if/where drops are occuring.

Troubleshooting is pretty simple. Check for config and port level issues along with total fabric health and statistics. Next look at the port level to look for ingress drops, go to the ingressQ, S1, S2, S3 fabric ASICs (Rx and Tx), fabricQ, and finally the egress port.

I am not sure what new documentation is on CCO but here is a rough idea as well as some of the general fabric commands. There are many more commands, and it is possible to track drops all the way through the fabric with some time and patience. Some drops are ok, note the large input/output amounts of good packets, and not all drops means packets are being dropped.

http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.4/troubleshooting/guide/tr34fab.pdf

show int

show controller stats

In admin mode

show controllers fabric plane all detail

show controllers fabric connectivity all

show controllers fabric link health *Most helpful for CRS-MC

show controllers fabric fsdb-pla rack 0

show controllers fabric plane all statistics

show controllers fabric plane statistics detail

HTH,

Sam Milstead

CSE - XR TAC