We're troubleshooting an issue with our Internet performance. We are provisioned with a 1Gbps symmetrical link from our ISP and currently the ASR outside interface (gi0/0/0) shows around 30% utilization:
INTERNET-ROUTER#sh int gi0/0/0
GigabitEthernet0/0/0 is up, line protocol is up
Hardware is 4XGE-BUILT-IN, address is 001f.ca15.ed00 (bia 001f.ca15.ed00)
Description: OUTSIDE TO ISP
Internet address is a.b.c.d
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 49/255, rxload 61/255
Encapsulation ARPA, loopback not set
Keepalive not supported
Full Duplex, 1000Mbps, link type is auto, media type is T
output flow-control is on, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:11, output 00:01:24, output hang never
Last clearing of "show interface" counters never
Input queue: 0/375/2497/1030 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 239675000 bits/sec, 49780 packets/sec
5 minute output rate 193607000 bits/sec, 44036 packets/sec
108538977078 packets input, 55832140065374 bytes, 0 no buffer
Received 326948 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
99430287225 packets output, 38558895093668 bytes, 0 underruns
0 output errors, 0 collisions, 3 interface resets
0 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
Now looking at the inside interface (Gi0/0/3) we see problems with txload, rxload and output queue drops:
INTERNET-ROUTER#sh int gi0/0/3
GigabitEthernet0/0/3 is up, line protocol is up
Hardware is 4XGE-BUILT-IN, address is 001f.ca15.ed03 (bia 001f.ca15.ed03)
Description: INSIDE TO ASA
Internet address is e.f.g.h
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 255/255, rxload 255/255
Encapsulation ARPA, loopback not set
Keepalive not supported
Full Duplex, 1000Mbps, link type is force-up, media type is T
output flow-control is on, input flow-control is on
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/375/0/0 (size/max/drops/flushes); Total output drops: 800781112
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 110959000 bits/sec, 28364 packets/sec
5 minute output rate 231570000 bits/sec, 39173 packets/sec
50404755765 packets input, 21397119353119 bytes, 0 no buffer
Received 398901 broadcasts (0 IP multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 2940620 multicast, 0 pause input
65949758049 packets output, 56288732167788 bytes, 0 underruns
0 output errors, 0 collisions, 6 interface resets
270970 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
So my question is, txload/rxload seems to indicate the interface is saturated but the input rate/output rate doesnt indicate anything close to the 1 Gbps link speed capable. How is this possible? Is this a bug or a defect in the hardware?
Our ASR 1002 is running version 03.16.10.S.
Our observations on speed tests run using Speedtest.net is that our download speed is often a third (or more) of our upload.
Thanks in advance for any light you can shed on this issue.
