Cisco 2921 Router barely working with the internet

[Ian Sully]

I have a 2921 Router that is going to be my Default Gateway for all of my devices, only one problem is, the devices are getting internet, but it is bearly working. I actually have 2 networks, one for my Cisco IP Phones, and one for all the rest of the phones. This router is also connected to only 1 ISP, and I been starting to wonder if that is the problem, but if anyone can tell me, just let me know.

Ian

[Georg Pauwen]

Hello, 

what do you mean by barely working ? Is the connection slow ? Post the full running configuration of your router, maybe we can spot something...

[Ian Sully]

When I try to load a web page (or anything else) it is really slow, I am not if this has happened to anyone else as well, but I am really wondering if this is because of it giving 2 networks internet, but if you can help me, that would be great!

Ian

[Georg Pauwen]

Post the output of:

sh run

[Joseph W. Doherty]

What's the bandwidth of your Internet connection and your LAN connection(s).

What's the load on your router's interfaces?

What's the CPU performance history stats?

[Ian Sully]

The WAN is 1000 MB per second right now from the modem, ISP is Cable One (now Sparklight). The switch has 48 FasEthernet Ports. But they work no problem. So, I am not sure.

[Georg Pauwen · Accepted solution]

Hello,

the 2921 gets you about 180MB throughput max, it will never match your 1000MB WAN. That might be the problem...?

[Ian Sully]

Would an ISR 4331 be any better?

[Joseph W. Doherty]

Does your ISP cable had "capped" bandwidth, especially "up"?  If so, do you shape for the "up" cap?