[c-nsp] OSPF over multilink

McCallum, Robert robert.mccallum at thus.net
Tue Jan 11 04:40:21 EST 2005


set your keepalive on the serial interfaces to 1 second.

Robert McCallum 
CCIE #8757 R&S


> -----Original Message-----
> From: Joe Shen [mailto:sj_hznm at yahoo.com.cn] 
> Sent: 11 January 2005 09:38
> To: Marcus Keane; Mrt Murat
> Cc: cisco-nsp at puck.nether.net
> Subject: RE: [c-nsp] OSPF over multilink
> 
> 
> Maybe OSPF ECMP is another choice if enough IP address
> is available.
> 
> Joe
> 
>  --- Marcus Keane <mkeane at microsoft.com> µÄÕýÎÄ£º
> > Hi,
> > 
> > It's probably the cost changing (and consequent SPF
> > recalculation) when
> > one of the constituent parts of the bundle goes
> > down. Try hard coding
> > the cost with "ip ospf cost X".
> > Marcus
> > 
> > > -----Original Message-----
> > > From: cisco-nsp-bounces at puck.nether.net
> > [mailto:cisco-nsp-
> > > bounces at puck.nether.net] On Behalf Of Mrt Murat
> > > Sent: Tuesday, 11 January 2005 18:23
> > > To: cisco-nsp at puck.nether.net
> > > Subject: [c-nsp] OSPF over multilink
> > > 
> > > hi,
> > > i want to ask a question about ospf over multilink
> > configuration. In
> > our
> > > ospf backbone ,we configured links between each
> > peer  routers  with
> > ppp
> > > multilink, you could find this configuration
> > below. but when one of
> > the
> > > links, included in the ppp multilink, goes down ,
> > data transfer over
> > > multilink stop approximately 30-40 second then
> > again start passing to
> > > other site. when we disable multilink config ,
> > this problem can not
> > occur.
> > > 
> > > interface Multilink1
> > >  ip address 10.0.252.9 255.255.255.252
> > >  no ip directed-broadcast
> > >  no ip route-cache cef
> > >  no ip route-cache
> > >  ip ospf network point-to-point
> > >  no cdp enable
> > >  ppp multilink
> > >  multilink-group 1
> > > 
> > > interface Serial4/0/0
> > >  no ip address
> > >  no ip directed-broadcast
> > >  encapsulation ppp
> > >  no ip route-cache distributed
> > >  no cdp enable
> > >  ppp multilink
> > >  multilink-group 1
> > > 
> > > ...
> > > ...
> > > ...
> > > 
> > > ..
> > > 
> > > 
> > > 
> > > 
> > > 
> > > thanks for all help,
> > > taha
> > > _______________________________________________
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> > 
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> 
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