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New Member

Cisco C850 connection to Virgin superhub only 10Mbs

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

3 REPLIES
Hall of Fame Super Gold

Cisco C850 connection to Virgin superhub only 10Mbs

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.

New Member

Cisco C850 connection to Virgin superhub only 10Mbs

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.

Hall of Fame Super Gold

Re: Cisco C850 connection to Virgin superhub only 10Mbs

Again: your router has low performances.

You need to buy a new one with better performances.

Check attached document.

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