From: Marko Berend (marko.berend@storm.hr)
Date: Thu Mar 04 2004 - 10:34:52 GMT-3
Exactly, because if everything works after soft reset, you're ok.
Hard reset does this by tearing down and reestablishing the TCP
connection and this takes time (like the first time you config it).
So if you're doing inbound manipulation, do a soft outbound on the other
router.
If you're doing outbound manipulation do a soft outbound on this router.
Route refresh capability is required on a router that does soft inbound.
My understanding is that you're ok just using soft outbound on both
ends.
Also be careful to state peer IP when you do hard resets if you don't
want to reset all peer connections.
M
-----Original Message-----
From: Packet Man [mailto:ccie2b@hotmail.com]
Sent: Thursday, March 04, 2004 2:27 PM
To: Marko Berend; ccielab@groupstudy.com
Subject: RE: BGP session resets: Hard versus Soft
Thanks Marko, for clarifying that. So, back to the original question:
In the lab, are you recommending using that it's better to first do soft
resets (b/c it's very fast and reliable enough) but then, if things
aren't
as expected do a hard reset?
Thanks again. pm
>From: "Marko Berend" <marko.berend@storm.hr>
>Reply-To: "Marko Berend" <marko.berend@storm.hr>
>To: <ccielab@groupstudy.com>
>Subject: RE: BGP session resets: Hard versus Soft
>Date: Thu, 4 Mar 2004 14:14:13 +0100
>
>PM,
>
>You missunderstood me. Hard reset takes the same amount of time in the
>lab routers, as it is reseting TCP connections between peers. Soft
>takes virtualy no time at all. You don't have to worry about "neighbor
>xxxx soft inbound" as long as you can soft reset outbound on the
>opposing peer.
>
>Most policy related things work after soft reset. You should use it
>first. If you are sure about your config and it still won't work, then
>hard reset it. After you're done with BGP hard reset it to see if
>everything holds... Can't be too careful.
>
>M
>
>
>-----Original Message-----
>From: Packet Man [mailto:ccie2b@hotmail.com]
>Sent: Thursday, March 04, 2004 1:03 PM
>To: Marko Berend; ccielab@groupstudy.com
>Subject: RE: BGP session resets: Hard versus Soft
>
>
>Thanks for getting back to me.
>
>I'm surprised with your response, though, because I know that with my
>2500 series routers, there's a big difference in how long a soft and
>hard reset
>take. So, I figured, in the lab, there would also be a difference in
>time,
>but maybe it's not that great.
>
>As far as when a reset is needed, it's my undersatnding that whenever
>any change in BGP policy takes place that affects what routes are
>allowed in or
>out, a reset (either hard or soft) is needed. Don't you agree?
>
>PM
>
>
>
>
> >From: "Marko Berend" <marko.berend@storm.hr>
> >Reply-To: "Marko Berend" <marko.berend@storm.hr>
> >To: <ccielab@groupstudy.com>
> >Subject: RE: BGP session resets: Hard versus Soft
> >Date: Thu, 4 Mar 2004 11:34:35 +0100
> >
> >It is the same amount of time, it has little to do with processing
> >power I think.
> >
> >Soft reset is IMHO reliable enough for the feats that it's available
> >for.
> >
> >I always try a soft reset first (on both sides to be sure), if I
> >don't see any result then I do a hard reset. You can save a lot of
> >time with soft resets if you do a lot of experimenting. There is
> >actualy a list of things which can use the soft reset, don't know it
> >by heart, do a little research.
> >
> >-----Original Message-----
> >From: Packet Man [mailto:ccie2b@hotmail.com]
> >Sent: Wednesday, March 03, 2004 7:42 PM
> >To: ccielab@groupstudy.com
> >Subject: BGP session resets: Hard versus Soft
> >
> >
> >Hi gang,
> >
> >On a 2500 series router, doing a hard reset of a BGP session takes
> >about 1 to 2 minutes. In the lab, since they use higher end routers,
> >I'm wondering how long that takes?
> >
> >Also, I've herad that soft resets aren't 100% reliable and therefore
> >I should just do a hard reset. So, bottom line, do people think it's
> >better to do hard or soft BGP session resets in the real lab.
> >
> >Thanks in advance, PM
> >
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