Binding serial + WAN connection.

Discussion in 'Cisco' started by AM, May 24, 2005.

  1. AM

    AM Guest

    Hi there,

    does anyone know whether (and how) is possible for a serial and ethernet link to interoperate together?
    The first has a bandwidth of 512 kbits/sec while the second is connected to a wireless connection with a bandwidth of
    4Mbits/sec.

    Or it is better to use the 4Mbits/sec connection as main one and the 512 as backup?
    I would use a 3620 with highest upgrade available from Cisco's site.

    Thanks,
    Alex.
    AM, May 24, 2005
    #1
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  2. In article <SHEke.24201$>, AM <> wrote:
    :does anyone know whether (and how) is possible for a serial and ethernet link to interoperate together?
    :The first has a bandwidth of 512 kbits/sec while the second is connected to a wireless connection with a bandwidth of
    :4Mbits/sec.

    You can't etherchannel them together, but you can use ppp multilink.

    http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fdial_c/fnsprt9/dcdppp.htm

    :Or it is better to use the 4Mbits/sec connection as main one and the 512 as backup?

    They have different characteristics. The 4 Mb/s wireless link would
    be half duplex, so if you can afford to keep both links going
    then you'd sort of link to have the return ACKs come back over
    the serial link. [Unless, that is, the bulk of the traffic is
    coming from the other side, in which case you want the ACKs from your
    side to go -out- the serial link.]

    Binding ports together doesn't often get quite the results one might
    hope for -- it isn't as simple as "half the traffic" (or a proportional
    part) will go on each link.
    Walter Roberson, May 24, 2005
    #2
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