dynamic vti configuration

Discussion in 'Cisco' started by GT, Jan 26, 2009.

  1. GT

    GT Guest

    dear all, just wanted to get a view on specific bit of (dynamic) VTI
    configuration to support connections from systems running cisco vpn
    client software for windows.

    re the ip addressing of the 'virtual-template' from which the
    dynamically created (tunnel) interfaces are created

    examples use 'ip unnumbered loopback0' with a related loopback
    configuration which has some (arbitrary) ip address configured.

    QU. does this ip address and subnet actually have any significance ?
    i have seen 127.0.0.1 used on windows systems?

    it would seem 'important' as this will be the source of all packets
    going from the router over the tunnel interface ?
    GT, Jan 26, 2009
    #1
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  2. GT

    GT Guest

    On Jan 26, 10:31 am, GT <> wrote:
    > dear all, just wanted to get a view on specific bit of (dynamic) VTI
    > configuration to support connections from systems running cisco vpn
    > client software for windows.
    >
    > re the ip addressing of the 'virtual-template' from which the
    > dynamically created (tunnel) interfaces are created
    >
    > examples use 'ip unnumbered loopback0' with a related loopback
    > configuration which has some (arbitrary) ip address configured.
    >
    > QU. does this ip address and subnet actually have any significance ?
    > i have seen 127.0.0.1 used on windows systems?
    >
    > it would seem 'important' as this will be the source of all packets
    > going from the router over the tunnel interface ?


    just one further note on this is that on the more recent IOS releases
    from 12.4(17) it would seem that we no longer have 'ip address
    unnumbered' as an addressing option
    GT, Jan 26, 2009
    #2
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  3. GT

    GT Guest

    On Jan 26, 11:22 am, GT <> wrote:
    > On Jan 26, 10:31 am, GT <> wrote:
    >
    > > dear all, just wanted to get a view on specific bit of (dynamic) VTI
    > > configuration to support connections from systems running cisco vpn
    > > client software for windows.

    >
    > > re the ip addressing of the 'virtual-template' from which the
    > > dynamically created (tunnel) interfaces are created

    >
    > > examples use 'ip unnumbered loopback0' with a related loopback
    > > configuration which has some (arbitrary) ip address configured.

    >
    > > QU. does this ip address and subnet actually have any significance ?
    > > i have seen 127.0.0.1 used on windows systems?

    >
    > > it would seem 'important' as this will be the source of all packets
    > > going from the router over the tunnel interface ?

    >
    > just one further note on this is that on the more recent IOS releases
    > from 12.4(17) it would seem that we no longer have 'ip address
    > unnumbered' as an addressing option


    sorry, ignore last post !
    GT, Jan 26, 2009
    #3
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