From: Frank CCIE (frankccie@gmail.com)
Date: Sat Dec 08 2007 - 18:51:49 ART
Hi, Joseph,
The problem is resolved after I loaded c3640.IOS 12.4(13a) in my
router. The issue is a bug in 12.4(12)
Thanks everybody for your immediate response and supports.
Cheers
Frank
On Dec 8, 2007 3:48 PM, Joseph Saad <joseph.samir.saad@gmail.com> wrote:
> I tried this chunk, saved and reloaded
>
> interface FastEthernet0/0
> no ip address
> duplex auto
> speed auto
>
> interface FastEthernet0/0.10
> description VLAN 10
> encapsulation isl 10
> ip address 10.10.1.2 255.255.255.0 secondary
> ip address 172.16.25.2 255.255.255.0
> no ip redirects
> ip ospf network non-broadcast
> !
> interface FastEthernet0/0.12
> encapsulation isl 12
> ip address 172.16.12.2 255.255.255.0
> no ip redirects
>
>
> router ospf 1
> log-adjacency-changes
> area 12 virtual-link 172.16.101.1
> redistribute connected subnets route-map Connected-->OSPF
> network 172.16.12.0 0.0.0.255 area 12
> network 172.16.25.0 0.0.0.255 area 10
> network 172.16.124.0 0.0.0.255 area 0
> neighbor 172.16.25.7
>
>
>
>
> and this is how it looks after reload
>
>
> Rack1R1#sh runn | s router ospf
> router ospf 1
> log-adjacency-changes
> area 12 virtual-link 172.16.101.1
> redistribute connected subnets route-map Connected-->OSPF
> network 172.16.12.0 0.0.0.255 area 12
> network 172.16.25.0 0.0.0.255 area 10
> network 172.16.124.0 0.0.0.255 area 0
> neighbor 172.16.25.7
>
> Rack1R1#sh runn | section Fast.*0/0
> interface FastEthernet0/0
> no ip address
> duplex auto
> speed auto
> interface FastEthernet0/0.10
> description VLAN 10
> encapsulation isl 10
> ip address 10.10.1.2 255.255.255.0 secondary
> ip address 172.16.25.2 255.255.255.0
> no ip redirects
> ip ospf network non-broadcast
> interface FastEthernet0/0.12
> encapsulation isl 12
> ip address 172.16.12.2 255.255.255.0
> no ip redirects
>
>
>
> Neighbor is retained, broadcast is retained ... no error during startup.
>
>
> Cheers mate.
>
>
>
> On Dec 9, 2007 12:36 AM, Frank CCIE < frankccie@gmail.com> wrote:
>
> > Hi, Joseph,
> >
> > My R2 configuration is in attachment in NotePad format. Please try it
> > in your latest 12.4(13a) IOS.
> >
> > Let me know the result.
> >
> > Thanks
> >
> > Frank
> >
> > On Dec 8, 2007 3:16 PM, Joseph Saad <joseph.samir.saad@gmail.com>
> > wrote:
> >
> > > post your interface and router full config please ... I'll quickly try
> > > it on my version of IOS and let you know if it is an issue.
> > >
> > > By the way. Which lab is this?
> > >
> > > On Dec 8, 2007 11:56 PM, Frank CCIE < frankccie@gmail.com> wrote:
> > >
> > > > HI,
> > > >
> > > > I add router-id in ospf process.
> > > >
> > > > router ospf 1
> > > > router-id 172.16.102.1
> > > > ... ...
> > > >
> > > > The symptom is still there. It did not work. Any other thought?
> > > >
> > > >
> > > > Thanks
> > > >
> > > > Frank
> > > >
> > > > On Dec 8, 2007 2:33 PM, srinivas pv <vsrinivas.paturi@gmail.com>
> > > > wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > In the following configs, there are chances that after reloading
> > > > of
> > > > > routers, 172,16.101.1 may not become router-id. For ex. some other
> > > > higher
> > > > > loopback interface ip address can become router id. To avoid this,
> > > > need to
> > > > > configure router-id under OSPF processes.
> > > > >
> > > > > router ospf 1
> > > > > log-adjacency-changes
> > > > > area 12 virtual-link 172.16.101.1
> > > > >
> > > > >
> > > > > Thanks,
> > > > > Srinivas
> > > > >
> > > > > On Dec 9, 2007 12:47 AM, srinivas pv < vsrinivas.paturi@gmail.com>
> > > > wrote:
> > > > >
> > > > > > Hi Frank,
> > > > > >
> > > > > > I think the problem is due to missing of 'router-id' under OSPF
> > > > process.
> > > > > > Try configuring it and check once.
> > > > > >
> > > > > > Thanks,
> > > > > > Srinivas
> > > > > >
> > > > > >
> > > > > > On Dec 9, 2007 12:27 AM, Frank CCIE < frankccie@gmail.com>
> > > > wrote:
> > > > > >
> > > > > > > Hi, Experts,
> > > > > > >
> > > > > > > In my lab scenario, OSPF network type NON-Broadcast (NBMA) is
> > > > set in
> > > > > > > Ethernet port to fulfill the lab requirement and "neighbor"
> > > > statement
> > > > > > > is
> > > > > > > added in OSPF process. The configuration runs well as
> > > > expected. I
> > > > > > > save the
> > > > > > > config and reload.
> > > > > > >
> > > > > > > The "neighbor" statement is lost in running-config during the
> > > > router
> > > > > > > reload.
> > > > > > > Consequently, no neighbor is created for the NBMA netowrk.
> > > > (Please see
> > > > > > > the
> > > > > > > error msg in reloading below). The "neighbor" statement is
> > > > still in
> > > > > > > startup-config. Then I copy startup-conf to running-config
> > > > after
> > > > > > > loading,
> > > > > > > IOS does not show any error and everything is normal.
> > > > > > >
> > > > > > > After trouble-shooting, I found "area virtual-link" causes the
> > > >
> > > > > > > problem. If
> > > > > > > the "area virtual-link" is removed, the reload procedure is
> > > > normal.
> > > > > > > When
> > > > > > > "area virtual-link" is added, the "neighbor" statement always
> > > > lost due
> > > > > > > to
> > > > > > > IOS misjudgement - the network is NOT a NBMA.
> > > > > > >
> > > > > > > I do not know it is my configuration problem, or a race
> > > > condition
> > > > > > > during the
> > > > > > > load? The router is 3640 and IOS version is 12.4. Could you
> > > > shine a
> > > > > > > light?
> > > > > > >
> > > > > > >
> > > > > > > Thank you very much.
> > > > > > >
> > > > > > > Frank
> > > > > > >
> > > > > > > ================================
> > > > > > > interface FastEthernet0/0.10
> > > > > > > description This port connects to Area 12. It is a NBMA
> > > > netwok
> > > > > > > encapsulation isl 10
> > > > > > > ip address 172.16.25.2 255.255.255.0
> > > > > > > no ip redirects
> > > > > > > *ip ospf network non-broadcast*
> > > > > > >
> > > > > > >
> > > > > > > router ospf 1
> > > > > > > log-adjacency-changes
> > > > > > > * area 12 virtual-link 172.16.101.1
> > > > > > > * network 172.16.12.0 0.0.0.255 area 12
> > > > > > > network 172.16.25.0 0.0.0.255 area 10
> > > > > > > * neighbor 172.16.25.7
> > > > > > > *
> > > > > > > #sh version
> > > > > > > Cisco IOS Software, 3600 Software (C3640-JK9O3S-M), Version
> > > > 12.4 (12),
> > > > > > > RELEASE SOFTWARE (fc1)
> > > > > > >
> > > > > > > /* Reload and IOS shows an error message during reload*/
> > > > > > > # reload
> > > > > > > ... ...
> > > > > > > Processor board ID 15663547
> > > > > > > R4700 CPU at 100MHz, Implementation 33, Rev 1.0
> > > > > > > 1 FastEthernet interface
> > > > > > > 4 Serial interfaces
> > > > > > > DRAM configuration is 64 bits wide with parity disabled.
> > > > > > > 125K bytes of NVRAM.
> > > > > > > 32768K bytes of processor board System flash (Read/Write)
> > > > > > > *OSPF: Neighbor command is allowed only on NBMA and
> > > > > > > point-to-multipoint
> > > > > > > networks
> > > > > > > *
> > > > > > > Press RETURN to get started!
> > > > > > > ... ....
> > > > > > >
> > > > > > >
> > > > > > >
> > > > _______________________________________________________________________
> > > > > > > Subscription information may be found at:
> > > > > > > http://www.groupstudy.com/list/CCIELab.html
> > > >
> > > > _______________________________________________________________________
> > > >
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