Router ISP WAN bandwidth check.

[karinn001]

Hi,

I have  CISCO2901/K9  router and and ISP link is coming on the WAN port (G0/1). I need to check the status of the WAN bandwidth which is provided by vendor. How can i check that vendor has providing me how much bandwidth. Kindly help me. 

GigabitEthernet0/1 is up, line protocol is up
Hardware is CN Gigabit Ethernet, address is fc55.4737.9479 (bia fc99.4737.9309)
Description: **** Connected to WAN ****
Internet address is 202.61.40.82/29
MTU 1500 bytes, BW 4096 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 27/255, rxload 191/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 100Mbps, media type is RJ45
output flow-control is unsupported, input flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 3078000 bits/sec, 346 packets/sec
5 minute output rate 441000 bits/sec, 286 packets/sec
243406794 packets input, 1457524161 bytes, 0 no buffer
Received 296308 broadcasts (0 IP multicasts)
0 runts, 2 giants, 0 throttles
34 input errors, 2 CRC, 16 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
208353291 packets output, 67881201 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
22 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

[Joseph W. Doherty]

During off-hours, you might use a traffic generator to determine if you can push the amount as agreed with your provider.

For example, if provider is supposed to provide 15 Mbps, you can send 15 (or slightly more) Mbps, and see if the other sides receives 15 Mbps.  (BTW, I presume you have "two sides" to conduct test with.)

[karinn001]

You mean i need some bandwidth monitoring tools, or i can check on my router?

I have a two public IPs and if i send some amount of traffic to next hop IP what this would provide me the right results?

like i have an IP address  202.61.40.81 isp 202.61.40.82 is my local IP.

Now pls let me clear if i generate some traffic from my local address to far end would i got the results?

[Joseph W. Doherty · Accepted solution]

Generally, you need some tool.

Routers can do some stuff, but they are optimized for passing transit traffic, so bandwidth testing is best done using them in normal operation.

As to what to test, it depends on what bandwidth you're trying to measure, and what you can actually measure.  If you went from your public IP to ISP's next hop IP, how do you know what the ISP side is "seeing".

[karinn001]

Thanks joseph for adding comments!