08-16-2013 10:57 AM - edited 03-04-2019 08:47 PM
Hi,
I realise some people here are asking some questions about some serious cisco hardware so I hope it is acceptable to ask for help with a lowly Cisco C860 which I mostly use to provide VPN access to work and as a firewall.
I have a Virgin Superhub (
http://help.virginmedia.com/system/selfservice.controller?CMD=VIEW_ARTICLE&ARTICLE_ID=3859&CURRENT_CMD=SEARCH&CONFIGURATION=1001&PARTITION_ID=1&USERTYPE=1&LANGUAGE=en&COUNTY=us&VM_CUSTOMER_TYPE=Cable) and connect my cisco into it and all other machines in my home network use DHCP provided by the cisco. My contract with Virgin gives me at most 60Mbs. If I connect my pc directly to the superhub and do a wget of a 100MB file from a reliable and fast server not via VPN I get 7.33MBs but if I go through the cisco I only get 1.3MBs (which by reckoning is around 10Mbs).
I've replaced the cable from the cisco to the superhub with a new cat5 cable and the orange light at the connection on the superhub shows the superhub thinks the connection is 100M. I also tried a wget across my LAN and got more than 3 times the speed so at least the LAN connections on the cisco are obviously not 10Mbs. The show interfaces in the cisco shows:
FastEthernet4 is up, line protocol is up
Hardware is PQUICC_FEC, address is 000c.8566.73e7 (bia 0027.0d4e.a279)
Internet address is 192.168.0.3/24
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:05, output 00:00:05, output hang never
Last clearing of "show interface" counters never
Input queue: 0/100/53/0 (size/max/drops/flushes); Total output drops:0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 160000 bits/sec, 25 packets/sec
5 minute output rate 1000 bits/sec, 2 packets/sec
78421 packets input, 51576314 bytes
Received 205 broadcasts, 0 runts, 0 giants, 13 throttles
1 input errors, 1 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
65954 packets output, 42299303 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
which seems to indicate the cisco thinks this is a a 100Mbs full duplex connection and yet I only manage to get around 10Mbs.
I'm no cisco expert and I'm at a loss as to where next to look.
Anyone have any ideas?
Thanks
Martin
08-16-2013 04:17 PM
That is right, the 850 is an old router mean for the boradband of years ago, it has more or less the performances you have found.
08-17-2013 12:23 AM
I don't understand your answer. If the connection between the cisco and the superhub is 100Mbs then how is I can only get 10Mbs between them. Also, I can get far greater than 10Mbs between machines on the LAN side. It is like something is throttling on the wan side.
08-17-2013 04:04 AM
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