From: Barney Gaumer (bagaumer@yahoo.com)
Date: Sat Aug 16 2003 - 16:06:00 GMT-3
Try mtu ignore on the interface "ip ospf mtu-ignore"
--- seonghui <seonghui@vads.com> wrote:
> Hi Matijevic,
>
> I don't believe u can change that, anyway below is
> what i've tried.
>
> conf t
> Enter configuration commands, one per line. End
> with CNTL/Z.
> r1(config)#int fas0/0
> r1(config-if)#mtu ?
> <64-18000> MTU size in bytes
> r3(config-if)#mtu 1518
> % Interface FastEthernet0/0 does not support user
> settable mtu.
>
> sw1(config)#int vlan 3
> sw1(config-if)#mtu 1500
> ^
> % Invalid input detected at '^' marker.
>
> I believe there is no command to set MTU size under
> switch int vlan and
> also, router doesn't allow u 2 change it.
>
> p/s: i hv not been sleeping for more than 20
> hours...maybe shall take a
> short break and start afresh tomorrow morning.
>
> regards - SH
>
>
> -----Original Message-----
> From: John Matijevic [mailto:matijevi@bellsouth.net]
> Sent: Sunday, August 17, 2003 2:10 AM
> To: seonghui; ccielab@groupstudy.com
> Subject: Re: cat3550 cannot establish ospf nei with
> router/s
>
>
> Seong,
> On Switch enter:
> vlan 10
> mtu 1500
> or you can go to other router,
> int fa0/0
> and set mtu from interface
> Please post results,
> Sincerely,
> Matijevic
> ----- Original Message -----
> From: "seonghui" <seonghui@vads.com>
> To: "'John Matijevic'" <matijevi@bellsouth.net>;
> <ccielab@groupstudy.com>
> Sent: Saturday, August 16, 2003 2:05 PM
> Subject: RE: cat3550 cannot establish ospf nei with
> router/s
>
>
> > Hi Matijevic,
> >
> > MTU on router int fa0/0 is of course 1500 while
> MTU on vlan 10 is 1518. I
> > tried changing them but router doesn't allow me to
> do so.
> >
> > any clue?
> >
> > regards - SH
> >
> > -----Original Message-----
> > From: John Matijevic
> [mailto:matijevi@bellsouth.net]
> > Sent: Sunday, August 17, 2003 1:55 AM
> > To: seonghui; ccielab@groupstudy.com
> > Subject: Re: cat3550 cannot establish ospf nei
> with router/s
> >
> >
> > Hello Seong,
> > Please check the mtu on the interface on the vlan
> interface as well as the
> > interface on the router to make sure that the mtu
> is the same. ex. sh ip
> int
> > e0, or sh ip int vlan 20.
> > Please post results.
> > Sincerely,
> > Matijevic
> > ----- Original Message -----
> > From: "seonghui" <seonghui@vads.com>
> > To: "'John Matijevic'" <matijevi@bellsouth.net>;
> <ccielab@groupstudy.com>
> > Sent: Saturday, August 16, 2003 1:42 PM
> > Subject: RE: cat3550 cannot establish ospf nei
> with router/s
> >
> >
> > > Hi Matijevic,
> > >
> > > I tried that earlier, but the result is the
> same.
> > >
> > > regards - SH
> > >
> > > -----Original Message-----
> > > From: John Matijevic
> [mailto:matijevi@bellsouth.net]
> > > Sent: Sunday, August 17, 2003 1:36 AM
> > > To: seonghui; ccielab@groupstudy.com
> > > Subject: Re: cat3550 cannot establish ospf nei
> with router/s
> > >
> > >
> > > Hello Seong,
> > > Could you try putting ip ospf priority 0 under
> vlan interface on switch.
> > > Please post results.
> > > Sincerely,
> > > Matijevic
> > > ----- Original Message -----
> > > From: "seonghui" <seonghui@vads.com>
> > > To: <ccielab@groupstudy.com>
> > > Sent: Saturday, August 16, 2003 1:00 PM
> > > Subject: cat3550 cannot establish ospf nei with
> router/s
> > >
> > >
> > > > Hi group,
> > > >
> > > > I have been 'haunted' by this problem for the
> past two days. Here the
> > > > problem goes...
> > > >
> > > > I have a router conneted to a Cat3550. router
> fa0/0 (ip address
> > > > 10.10.10.1/24) is connected to port fas0/1
> (vlan 10) on cat3550. I
> would
> > > > like cat3550 to establish ospf neighbour with
> the router and hence, I
> > > > created an Interface vlan 10 with ip address
> 10.10.10.2/24. However,
> the
> > > > router and the cat3550 just cannot form
> adjacency. Below is the debug
> > > > message:
> > > >
> > > > 07:28:30: OSPF: rcv. v:2 t:1 l:48
> rid:10.10.10.1 aid:0.0.0.10 chk:7E15
> > > aut:0
> > > > auk: from Vlan10
> > > > 07:28:30: OSPF: Rcv hello from 10.10.10.1 area
> 11 from Vlan10
> 10.10.10.2
> > > > 07:28:30: OSPF: End of hello processing
> > > > 07:28:31: OSPF: rcv. v:2 t:2 l:32
> rid:10.10.10.1 aid:0.0.0.10 chk:21B2
> > > aut:0
> > > > auk: from Vlan10
> > > > 07:28:31: OSPF: Rcv DBD from 10.10.10.1 on
> Vlan10 seq 0x2D3 opt 0x42
> > flag
> > > > 0x7 len 32 mtu 1500 state EXSTART
> > > > 07:28:31: OSPF: First DBD and we are not SLAVE
> > > > 07:28:31: OSPF: Retransmitting DBD to
> 10.10.10.1 on Vlan10
> > > > 07:28:31: OSPF: 10.10.10.1 address 10.10.10.2
> on Vlan10 is dead, state
> > > DOWN
> > > > 07:28:31: %OSPF-5-ADJCHG: Process 1, Nbr
> 10.10.10.1 on Vlan10 from
> > EXSTART
> > > > to DOWN, Neighb or Down: Too many DBD
> retransmitions
> > > > 07:28:31: OSPF: Neighbor change Event on
> interface Vlan10
> > > > 07:28:36: OSPF: Rcv DBD from 10.10.10.1 on
> Vlan10 seq 0x2D3 opt 0x42
> > flag
> > > > 0x7 len 32 mtu
> > > > 1500 state DOWN
> > > > 07:28:36: OSPF: Nbr state is less than INIT
> > > >
> > > > I tried running other routing protocol between
> the switch and the
> > router,
> > > it
> > > > worked fine. Can some body please tell me
> what's the problem with
> ospf?
> > > >
> > > > Thanks,
> > > > SH
> > > >
> > > >
> > > >
>
This archive was generated by hypermail 2.1.4 : Tue Sep 02 2003 - 18:53:59 GMT-3