Date: Mon, 23 Aug 2010 17:22:29 -0700 From: "Li, Qing" <qing.li@bluecoat.com> To: "Ingo Flaschberger" <if@xip.at>, <net@freebsd.org> Subject: RE: funny ECMP Message-ID: <B583FBF374231F4A89607B4D08578A4307F1FC70@bcs-mail03.internal.cacheflow.com> In-Reply-To: <alpine.LFD.2.00.1008240144350.12708@filebunker.xip.at> References: <alpine.LFD.2.00.1008230154280.29368@filebunker.xip.at> <alpine.LFD.2.00.1008240144350.12708@filebunker.xip.at>
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Hi,
>=20
> I have changed the route selection code of ecmp to
> balance only between routes of the same weight.
> (see attached file)
>=20
>
> As Qing Li mentioned months ago, there are problems with static routes
> and interfaces.
>=20
Do you have the exact link to the email thread?=20
There were no pending ECMP related issues since my last round of
commits
as far as I can remember.
>
> Example 1:
> ifconfig em1 alias 10.13.13.90/24
> ping 10.13.13.95 ok
> route add 10.13.13.0/24 10.11.11.1 -weight 2
> ping 10.13.13.95 broken (arpresolve: can't allocate llinfo for
> 10.13.13.95)
>=20
Could you please explain a bit on exactly what you try to=20
accomplish here with this configuration?
>=20
> deleting the last static multipath routes seems to affect?, destroy?
> the interface route.
> system crashes in:
> /usr/src/sys/net/route.c:370
> rn =3D rnh->rnh_matchaddr(dst, rnh);
> if (rn && ((rn->rn_flags & RNF_ROOT) =3D=3D 0)) {
> newrt =3D rt =3D RNTORT(rn);
> here -> RT_LOCK(newrt);
> RT_ADDREF(newrt);
> if (needlock)
>=20
I will take a look.
-- Qing
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