When using ethernet for hooking up streaming devices and dacs, what cat level of  ethernet cable should be used. Is there any sonic improvement by going to a  higher dollar cat 7 or 8 cable?


In general, just to show how small of an issue this is, my primary switch has an uptime of 82 days, and transmitted somewhere upwards to 3.3 billion packets in total, with 0 packets lost.

Physical interface: ge-1/0/11, Enabled, Physical link is Up

  Interface index: 140, SNMP ifIndex: 537, Generation: 143

  Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled,

  Auto-negotiation: Enabled, Remote fault: Online, Media type: Copper, IEEE 802.3az Energy Efficient Ethernet: Disabled

  Device flags   : Present Running

  Interface flags: SNMP-Traps Internal: 0x4000

  Link flags     : None

  CoS queues     : 8 supported, 8 maximum usable queues

  Hold-times     : Up 0 ms, Down 0 ms

  Current address: f0:1c:2d:b8:71:8e, Hardware address: f0:1c:2d:b8:71:8e

  Last flapped   : 2015-03-02 21:43:05 CST (9w1d 10:11 ago)

  Statistics last cleared: Never

  Traffic statistics:

   Input  bytes  :        3322860227030                    0 bps

   Output bytes  :         247916852449                  608 bps

   Input  packets:           2475795752                    0 pps

   Output packets:            818652044                    0 pps

   IPv6 transit statistics:

    Input  bytes  :                   0

    Output bytes  :                   0

    Input  packets:                   0

    Output packets:                   0

  Egress queues: 8 supported, 4 in use

  Queue counters:       Queued packets  Transmitted packets      Dropped packets

    0 best-effort                    0            814627347                    0

    1 assured-forw                   0                    0                    0

    5 expedited-fo                   0                    0                    0

    7 network-cont                   0              4024698                    0

  Queue number:         Mapped forwarding classes

    0                   best-effort

    1                   assured-forwarding

    5                   expedited-forwarding

    7                   network-control

  Active alarms  : None

  Active defects : None

  MAC statistics:                      Receive         Transmit

    Total octets                 3322860227030     247916852449

    Total packets                   2475795752        818652044

    Unicast packets                 2475079840        814621375

    Broadcast packets                       12             5972

    Multicast packets                   715900          4024697

    CRC/Align errors                         0                0

    FIFO errors                              0                0

    MAC control frames                       0                0

    MAC pause frames                         0                0

    Oversized frames                         0

    Jabber frames                            0

    Fragment frames                          0

    Code violations                          0

  Autonegotiation information:

    Negotiation status: Complete

    Link partner:

        Link mode: Full-duplex, Flow control: Symmetric, Remote fault: OK, Link partner Speed: 1000 Mbps

    Local resolution:

        Flow control: Symmetric, Remote fault: Link OK

  Packet Forwarding Engine configuration:

    Destination slot: 0 (0x00)          

  CoS information:

    Direction : Output

    CoS transmit queue               Bandwidth               Buffer Priority   Limit

                              %            bps     %           usec

    0 best-effort            95      950000000    95             NA      low    none

    7 network-control         5       50000000     5             NA      low    none


2200-C> show system uptime

8:55AM  up 82 days, 22:57, 1 user, load averages: 0.09, 0.15, 0.10

@fredrik222 ,

Does oversubscription, errors and excessive delay cover that? The article makes it clear that it occurs and needs to be monitored. Any how....members here do hear a difference, for the better, all the while ignoring your advice.

Now. practice what you preach, and just go away. Put down that bottle, or battle flag you carry around and get a life. 

All the best,

@nonoise  No, not at all. Explain how a cable fixes any of these. I am very curious have a cable will fix these, especially oversubscription and excessive delay (article mentions 2 seconds). 

Please go on, show us that you know what you are talking about.

@fredrik222 ,

I'm answering your question about how a packet can be lost. The cables and devices in question help to filter out noise better than industry standard ones. Your recitation above is all Greek to me but it does go to show you know your job but have average hearing at best, as other members have already pointed out. Probably why you went to the bother of writing it all up. 

With your wireless setup, and how much RFI gets into that?

All the best,

I'm gonna have to go with @nonoise he's been on here longer and has more post  than Fredrick.