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must need hard/soft reset on BGP updates ?

 
 
jaehwang
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      04-16-2007
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

 
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Trendkill
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      04-16-2007
On Apr 16, 4:29 pm, "jaehwang" <(E-Mail Removed)> 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.

 
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Barry Margolin
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      04-17-2007
In article <(E-Mail Removed). com>,
"jaehwang" <(E-Mail Removed)> 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, http://www.velocityreviews.com/forums/(E-Mail Removed)
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 ***
 
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MC
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      04-17-2007
Barry Margolin wrote:
> In article <(E-Mail Removed). com>,
> "jaehwang" <(E-Mail Removed)> 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
 
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Darren Green
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      04-18-2007
>>
> 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


 
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