From: Jason Madsen (madsen.jason@gmail.com)
Date: Fri Feb 20 2009 - 14:01:27 ARST
Hi Akhilesh,
If for whatever reason you're required to use q-in-q tunnels as currently
configured and you only need at least one of them operational at a time, you
might want to try adding L2-tunnel and allow STP through the q-in-q tunnel.
I don't know what your topology looks like, but it's possible by passing STP
a downstream device could learn of the multiple paths and block one. If you
need both paths up at all times, I'd try ether-channeling them together and
then doing q-in-q (if your requirement makes you use q-in-q). Otherwise,
just use an ether-channel.
Jason
On Fri, Feb 20, 2009 at 5:23 AM, Pavel Bykov <slidersv@gmail.com> wrote:
> Well... that's hard. One of the main rules of L2 is to have only one way.
> You're using two. Solution would be Etherchannel...
>
> On Tue, Feb 17, 2009 at 7:34 PM, AKHILESH THAKUR <akhi_thakur@hotmail.com
> >wrote:
>
> > Dear GS,
> >
> > I have 3440 ME switch and facing the error message
> > %SW_MATM-4-MACFLAP_NOTIF:
> > Host 0022.7f24.a8c0 in vlan 303 is flapping between port Fa0/8 and port
> > Fa0/7.
> > Below is the switch configuration. The dot1q tunnel port is connected to
> > point
> > to point radios which in further connected to AP's.
> >
> >
> >
> > The AP's work as ROOT and MESH form. MESH AP's get connected to Root AP.
> If
> > more than 2 root AP's are available mesh AP will try connect to either of
> > the
> > root AP's. This makes switch to learn mesh AP's mac from both the port
> and
> > hence the error message.
> >
> > How to avoid the message. I tried no mac address-table notification but
> no
> > use. pls suggest any.
> >
> >
> >
> > Building configuration...
> >
> > Current configuration : 136 bytes
> > !
> > interface FastEthernet0/7
> > description "From_Chedda_To_Dreams2_P2_R1"
> > switchport access vlan 303
> > switchport mode dot1q-tunnel
> > end
> >
> > CHEDDA#sh run int fa0/8
> > Building configuration...
> >
> > Current configuration : 133 bytes
> > !
> > interface FastEthernet0/8
> > description "From_Chedda_To_JoyHomes_P4"
> > switchport access vlan 303
> > switchport mode dot1q-tunnel
> > end
> >
> >
> >
> > Regards
> >
> > Akhilesh
> >
> >
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>
> --
> Pavel Bykov
> ----------------
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