I have Verizon FIOS 150/65 service. I recently upgraded my router from the stock Actiontec router provided by Verizon to a Cisco 3845. After the upgrade my up and down speeds are peaking at about 55Mbit/second. Prior to installing the 3845 I was maxing out the service with full 150/65 with sustained speed tests. I tried another Cisco router as well and I am getting the same results. As soon as I go back to the Actiontec the speed increases again. I did notice that i have quite a few collisions incrementing on the interfaces and I believe my configuration is more than likely to blame. I have done as much troubleshooting as possible but I am not finding what is limiting the throughput. My CPU is bored almost 100% of the time, even with heavy traffic traversing the router. My memory is also bored. I thought a fresh set of eyes on the problem may shed some light...
Since the CPU is remaining low I do not believe the router is forced to process these packets in software.
I have attached two images of my 24 hour usage (5 minute increments) of both CPU and WAN facing interface...
My current interface config is:
edge3845a#show run int gi0/0
Current configuration : 363 bytes
ip address dhcp
no ip proxy-arp
ip flow ingress
ip nat outside
ip virtual-reassembly in drop-fragments
logging event subif-link-status
no cdp enable
See below output showing collisions:
edge3845a#show int gi0/0
GigabitEthernet0/0 is up, line protocol is up
Hardware is BCM1125 Internal MAC, address is 0024.c4b9.e1b0 (bia 0024.c4b9.e1b0)
Internet address is 22.214.171.124/24
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full Duplex, 1Gbps, media type is RJ45
output flow-control is XON, input flow-control is XON
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)
30 second input rate 777000 bits/sec, 77 packets/sec
30 second output rate 46000 bits/sec, 59 packets/sec
338341298 packets input, 590212818 bytes, 0 no buffer
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