01-05-2021 03:06 AM
Hi all,
Best wishes for the new year, may it be safe and outdoors again!
For a Cisco 2951 I have a speed issue. The chassis should be able to put 1Gbs through and it does so on the G0/0-G0/2 ports. However teh WIC cards do not go over 250+Mb.. And i cannot figure out why?!
Are there differend WIC manufactures? Like SIERRA for 4G? Or is it another configuration I am missing. On the G0/2 I have 800Mbs and on the G0/0/0 no more then 250+.
Does anyone know what I'm missing? Is it a Layer2 thing? Any advice would be most welcome!
Stay safe!
Greetings Marnix
Solved! Go to Solution.
01-19-2021 09:00 AM
No, the 75 Mbps (duplex) is what the router can support, with most of its features active, using an IMIX traffic mix, and not exceeding an average of 75% CPU. The 2951 best case performance is documented at 5.136 Gbps (aggregate). (See attachment for all the details.)
Yes, there's a difference between WIC generations; it's mainly the module's bandwidth to/from the router.
HWIC - 400 Mbps, EHWIC - 800 Mbps - vendor should be able to tell you which generation their module is.
01-05-2021 03:56 AM
Can you post the model of WIC, show module or show inventory.
01-05-2021 04:12 AM
Hello,
are you talking about WAN thoughput ? As far as I recall, there is no way you can get a throughput higher than what you achieve (250Mbps is a lot more than what this router 'officially' supports, which is somehwere around 75Mbps).
01-05-2021 08:01 AM
WIC/HWIC/EHWIC modules have physical bandwidth limitations (?/400/800 Mbps [duplex], respectively) on their bus interface to the hosting device. The host device might further limit this.
For example, for the 2951, Cisco recommends if for only 75 Mbps of WAN [duplex] bandwidth, although it can do more. Much depends on the "kind" of traffic and configuration of the router.
01-06-2021 01:51 AM
The module in question is:
NAME: "CISCO2951/K9", DESCR: "CISCO2951/K9 chassis, Hw Serial#: FCZ202941AG, Hw Revision: 1.1"
PID: CISCO2951/K9 , VID: V06 , SN: FCZ202941AG
NAME: "4 Port GE Non-POE EHWIC Switch on Slot 0 SubSlot 0", DESCR: "4 Port GE Non-POE EHWIC Switch"
PID: EHWIC-4ESG , VID: V01 , SN: FOC17376ELL
Thank you all for replying of course! Where can I find the info on throughput of the WIC? And is there a difference in suppliers? In 4g there is a manufacturer SIERRA that also uses its own software... could that be an issue? Or the firmware?
Again, thanks in advance!
01-06-2021 08:00 AM
I was unable to find max throughput for a WIC, but likely a 100 Mbps or less.
However, you have a EHWIC so the module interface should support 800 Mbps.
01-19-2021 01:33 AM
Thank you for your response! Apologies for my late response.
I'm still confused. The WAN throughput is G0/0, G0/1 and G0/2 is 75Mbps? That sounds low.
And there is a difference between WIC and EHWIC?
I also have a list from our supplier about these (EH)WIC how does one recognize the 400/800 type?
I am relatively new at this so my apologies for all the questions.
Marnix
01-19-2021 09:00 AM
No, the 75 Mbps (duplex) is what the router can support, with most of its features active, using an IMIX traffic mix, and not exceeding an average of 75% CPU. The 2951 best case performance is documented at 5.136 Gbps (aggregate). (See attachment for all the details.)
Yes, there's a difference between WIC generations; it's mainly the module's bandwidth to/from the router.
HWIC - 400 Mbps, EHWIC - 800 Mbps - vendor should be able to tell you which generation their module is.
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