[Mikrotik] Best way to do transparent PTP bridge

Tristram Cheer mikrotik at tristramcheer.com
Mon Sep 20 22:27:33 CDT 2010


:) PTMP is all good for mixing but it depends on what you need. We run pure
MT for Core to AP to CPE with some 1000+ CPE. I did run some mixed networks
but as you scale up settling on a single vendor helps with complex faults
where a mixed system ends up with the vendors involved pointing the blame
elsewhere

On 20 September 2010 15:22, RickG <rgunderson at gmail.com> wrote:

> No problem, my bad!
>
> On Mon, Sep 20, 2010 at 11:20 PM, Tristram Cheer <
> mikrotik at tristramcheer.com
> > wrote:
>
> > Sorry you didnt point that out in a e-mail thread about PTP links
> >
> > On 20 September 2010 15:19, RickG <rgunderson at gmail.com> wrote:
> >
> > > I didnt say PTP. It wasn't planned that way, its just the way it worked
> > > out.
> > > I have customer whose 125' tower is unclimbable. So, I ran coax down to
> > the
> > > bottom and used an RB433AH with an XR5. The link comes from a  Ubiquiti
> > > RocketM5 Sector and I have my MT (RB1000) at the bottom of that tower
> > doing
> > > all the routing. All works very well. Why not?
> > >
> > > On Mon, Sep 20, 2010 at 10:58 PM, Tristram Cheer <
> > > mikrotik at tristramcheer.com
> > > > wrote:
> > >
> > > > Dont cheap out on a PTP link? I cant think of a single reason for a
> PTP
> > > > link
> > > > to use 2 different brands. PTMP yeah but in that case I'd use UBNT on
> > the
> > > > CPE side and put it in router mode
> > > >
> > > > On 20 September 2010 14:35, RickG <rgunderson at gmail.com> wrote:
> > > >
> > > > > This leads to a question: What if youre using a different AP
> (UBNT)?
> > > What
> > > > > would the setting be then?
> > > > >
> > > > > On Mon, Sep 20, 2010 at 10:06 PM, Tristram Cheer <
> > > > > mikrotik at tristramcheer.com
> > > > > > wrote:
> > > > >
> > > > > > Psuedo-Bridge is a standard breaker, Why not use plain old WDS or
> > > > better
> > > > > > yet
> > > > > > VPLS.
> > > > > >
> > > > > > We've encountered a number of times speed limitations when
> bridging
> > > > > > wireless
> > > > > > to Ethernet and ended up switching from WDS bridges to BGP-VPLS
> for
> > > our
> > > > > > backhaul core
> > > > > >
> > > > > > On 20 September 2010 13:26, Scott Reed <sreed at nwwnet.net> wrote:
> > > > > >
> > > > > > >  I don't think comparing the MT psuedo-bridge to an old
> anything
> > is
> > > > > > > correct. MT developed this in response to customer requests for
> a
> > > way
> > > > > to
> > > > > > do
> > > > > > > bridging on the station end.  I have not done a lot of these,
> but
> > > > they
> > > > > > work
> > > > > > > fine for everything we have run through them.  I have one that
> > has
> > > > been
> > > > > > > running for a couple of years without a hiccup.
> > > > > > >
> > > > > > >
> > > > > > > On 9/20/2010 7:06 PM, Josh Luthman wrote:
> > > > > > >
> > > > > > >> The only difference is bridge allows one item in the reg
> table,
> > > > > > >> ap-bridge 255 IIRC.
> > > > > > >>
> > > > > > >> pseudo isn't a real bridge and can (and probably will) lead to
> > > layer
> > > > 2
> > > > > > >> issues.
> > > > > > >>
> > > > > > >> A good example was a Tranzeo "PTP" link we had years ago
> (using
> > > the
> > > > > > >> proprietary PTP configuration option).  The routers between
> two
> > > > sites
> > > > > > >> lost connectivity every 10-15 minutes.  Put in an eoip tunnel
> on
> > > the
> > > > > > >> routers on top of the Tranzeo link and the problem was solved.
> > > > > > >>
> > > > > > >> Josh Luthman
> > > > > > >> Office: 937-552-2340
> > > > > > >> Direct: 937-552-2343
> > > > > > >> 1100 Wayne St
> > > > > > >> Suite 1337
> > > > > > >> Troy, OH 45373
> > > > > > >>
> > > > > > >>
> > > > > > >>
> > > > > > >> On Mon, Sep 20, 2010 at 6:46 PM, Bill Prince
> > > > > > >> <part-15 at skylinebroadbandservice.com>  wrote:
> > > > > > >>
> > > > > > >>>  I used to do that until they came out with the
> > > pseudobridge-clone
> > > > > > thing.
> > > > > > >>>  Just seems to set up a little easier, but I was wondering
> > about
> > > > the
> > > > > > >>> "other"
> > > > > > >>> implications.
> > > > > > >>>
> > > > > > >>> So one way is:
> > > > > > >>>
> > > > > > >>>   PTP master = ap-bridge
> > > > > > >>>   PTP slave = station + wds
> > > > > > >>>
> > > > > > >>> Another way:
> > > > > > >>>
> > > > > > >>>   PTP master = bridge
> > > > > > >>>   PTP slave = station + wds
> > > > > > >>>
> > > > > > >>> Yet another way (what I'm using):
> > > > > > >>>
> > > > > > >>>   PTP master = bridge
> > > > > > >>>   PTP slave = station-psuedobridge-clone
> > > > > > >>>
> > > > > > >>> If I understand bridge versus ap-bridge correctly, ap-bridge
> is
> > > for
> > > > > > PtMP,
> > > > > > >>> and bridge is for PTP.
> > > > > > >>>
> > > > > > >>>
> > > > > > >>> bp
> > > > > > >>>
> > > > > > >>>
> > > > > > >>> On 9/20/2010 3:34 PM, Josh Luthman wrote:
> > > > > > >>>
> > > > > > >>>> With one radio you want to use ap-bridge and station, then
> go
> > to
> > > > the
> > > > > > >>>> WDS tab and set the first two fields appropriately.
> > > > > > >>>>
> > > > > > >>>> Josh Luthman
> > > > > > >>>> Office: 937-552-2340
> > > > > > >>>> Direct: 937-552-2343
> > > > > > >>>> 1100 Wayne St
> > > > > > >>>> Suite 1337
> > > > > > >>>> Troy, OH 45373
> > > > > > >>>>
> > > > > > >>>>
> > > > > > >>>>
> > > > > > >>>> On Mon, Sep 20, 2010 at 6:15 PM, Bill Prince
> > > > > > >>>> <part-15 at skylinebroadbandservice.com>    wrote:
> > > > > > >>>>
> > > > > > >>>>> As in a backhaul.  What last did was create a bridge
> between
> > > the
> > > > > > ether1
> > > > > > >>>>> and
> > > > > > >>>>> wlan1 on both units.  Then I set the primary to "bridge",
> and
> > I
> > > > set
> > > > > > the
> > > > > > >>>>> slave to station-pseudobridge-clone (no WDS).
> > > > > > >>>>>
> > > > > > >>>>> According to the way I read it, the pseudobridge-clone
> should
> > > be
> > > > > > >>>>> transparent
> > > > > > >>>>> (no munging the MACs of the attached devices into the MAC
> of
> > > the
> > > > > PTP
> > > > > > >>>>> station).  It doesn't seem to take a lot of processing
> power,
> > > and
> > > > > you
> > > > > > >>>>> don't
> > > > > > >>>>> have to create an addition bridge for the WDS.
> > > > > > >>>>>
> > > > > > >>>>> Comments?
> > > > > > >>>>>
> > > > > > >>>>> --
> > > > > > >>>>> bp
> > > > > > >>>>>
> > > > > > >>>>> _______________________________________________
> > > > > > >>>>> Mikrotik mailing list
> > > > > > >>>>> Mikrotik at mail.butchevans.com
> > > > > > >>>>> http://www.butchevans.com/mailman/listinfo/mikrotik
> > > > > > >>>>>
> > > > > > >>>>> Visit http://blog.butchevans.com/ for tutorials related to
> > > > > Mikrotik
> > > > > > >>>>> RouterOS
> > > > > > >>>>>
> > > > > > >>>>>  _______________________________________________
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> > > > > > >>>>
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> > > > > > >>>> RouterOS
> > > > > > >>>>
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> > > > > > >>> >
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> > > > > > >>>  _______________________________________________
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> > > Mikrotik
> > > > > > >> RouterOS
> > > > > > >>
> > > > > > >>
> > > > > > > --
> > > > > > > Scott Reed
> > > > > > > Owner
> > > > > > > NewWays Networking, LLC
> > > > > > > Wireless Networking
> > > > > > > Network Design, Installation and Administration
> > > > > > > Mikrotik Advanced Certified
> > > > > > > www.nwwnet.net
> > > > > > > (765) 855-1060
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > Mikrotik mailing list
> > > > > > > Mikrotik at mail.butchevans.com
> > > > > > > http://www.butchevans.com/mailman/listinfo/mikrotik
> > > > > > >
> > > > > > > Visit http://blog.butchevans.com/ for tutorials related to
> > > Mikrotik
> > > > > > > RouterOS
> > > > > > >
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