must need hard/soft reset on BGP updates ?

Discussion in 'Cisco' started by jaehwang, Apr 16, 2007.

  1. jaehwang

    jaehwang Guest

    Hi there :)
    I'm just wondering if it is possible without hard/soft reset to update
    routes on BGP.

    I guess hard/soft reset is only needed when you wanna update route or
    apply the new policy.
    If I don't use hard/soft reset, what happens ?

    Is it still updated ? I guess it's only updated by new incoming
    updates or outcoming updates that expires update periods, am i right ?

    I have no idea :(
    jaehwang, Apr 16, 2007
    #1
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  2. jaehwang

    Trendkill Guest

    On Apr 16, 4:29 pm, "jaehwang" <> wrote:
    > Hi there :)
    > I'm just wondering if it is possible without hard/soft reset to update
    > routes on BGP.
    >
    > I guess hard/soft reset is only needed when you wanna update route or
    > apply the new policy.
    > If I don't use hard/soft reset, what happens ?
    >
    > Is it still updated ? I guess it's only updated by new incoming
    > updates or outcoming updates that expires update periods, am i right ?
    >
    > I have no idea :(


    'clear ip route' should do it.
    Trendkill, Apr 16, 2007
    #2
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  3. In article <>,
    "jaehwang" <> wrote:

    > Hi there :)
    > I'm just wondering if it is possible without hard/soft reset to update
    > routes on BGP.
    >
    > I guess hard/soft reset is only needed when you wanna update route or
    > apply the new policy.
    > If I don't use hard/soft reset, what happens ?
    >
    > Is it still updated ? I guess it's only updated by new incoming
    > updates or outcoming updates that expires update periods, am i right ?
    >
    > I have no idea :(


    You don't need to reset if you're adding or deleting routes. But
    changing route maps that do things like set communities or prepends
    usually requires a reset to take effect.

    --
    Barry Margolin,
    Arlington, MA
    *** PLEASE post questions in newsgroups, not directly to me ***
    *** PLEASE don't copy me on replies, I'll read them in the group ***
    Barry Margolin, Apr 17, 2007
    #3
  4. jaehwang

    MC Guest

    Barry Margolin wrote:
    > In article <>,
    > "jaehwang" <> wrote:
    >
    >> Hi there :)
    >> I'm just wondering if it is possible without hard/soft reset to update
    >> routes on BGP.
    >>
    >> I guess hard/soft reset is only needed when you wanna update route or
    >> apply the new policy.
    >> If I don't use hard/soft reset, what happens ?
    >>
    >> Is it still updated ? I guess it's only updated by new incoming
    >> updates or outcoming updates that expires update periods, am i right ?
    >>
    >> I have no idea :(

    >
    > You don't need to reset if you're adding or deleting routes. But
    > changing route maps that do things like set communities or prepends
    > usually requires a reset to take effect.
    >

    clear ip bgp neighbor (either neighbor address or * for all) also will
    clear all BGP learned routes and relearn routes from the BGP peers
    MC, Apr 17, 2007
    #4
  5. jaehwang

    Darren Green Guest

    >>
    > clear ip bgp neighbor (either neighbor address or * for all) also will
    > clear all BGP learned routes and relearn routes from the BGP peers


    If my memory server me correctly you can do a soft reset inbound or outbound
    to your bgp peers as follows:

    clear ip bgp X.X.X.X soft in / out - where X.X.X.X is the neighbor.

    I don't have a router to hand to test but I think that's right.

    Regards

    Darren
    Darren Green, Apr 18, 2007
    #5
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