Re: Link state protocol

Check out the LSDB. Here is an example of a type-1 LSA stored in the
link-state database on a router

R2#sh ip ospf data router

            OSPF Router with ID (2.2.2.2) (Process ID 1)

                Router Link States (Area 0)

  LS age: 498
  Options: (No TOS-capability, DC)
  LS Type: Router Links
  Link State ID: 2.2.2.2
  Advertising Router: 2.2.2.2
  LS Seq Number: 80000063
  Checksum: 0x1569
  Length: 60
  Number of Links: 3

    Link connected to: a Stub Network
     (Link ID) Network/subnet number: 2.2.2.2
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metrics: 1

    Link connected to: another Router (point-to-point)
     (Link ID) Neighboring Router ID: 6.6.6.6
     (Link Data) Router Interface address: 150.100.100.2
      Number of TOS metrics: 0
       TOS 0 Metrics: 64

    Link connected to: a Stub Network
     (Link ID) Network/subnet number: 150.100.100.2
     (Link Data) Network Mask: 255.255.255.255
      Number of TOS metrics: 0
       TOS 0 Metrics: 0

On Thu, Sep 17, 2009 at 5:15 AM, jack daniels <jckdaniels12_at_gmail.com>wrote:

> Hi,
>
> Thanks , but where can I see the output of Links State ( up/down ) in OSPF
> database or routing table .
>
> Regards
>
>
>
> On Thu, Sep 17, 2009 at 1:48 PM, Abraham, Tharak <tharakabraham_at_gmail.com
> >wrote:
>
> > Flooding is the only method by which all the neighbors will have the same
> > database.
> >
> > One LSA is sent per each routers link with the details like
> >
> > 1. identifying the link --> network
> > 2. state of the link ---> up/down
> > 3. metric cost --> interface cost to the link
> > 4. any other links attached to that link --> neighbors on that link
> >
> >
> >
> > Best Regards,
> > Tharak Abraham Luke
> > Sent from Netherlands
> >
> > On Thu, Sep 17, 2009 at 9:25 AM, jack daniels <jckdaniels12_at_gmail.com
> >wrote:
> >
> >> Hi All,
> >>
> >> When we say Link state protocols flood link information to build to
> >> complete
> >> topology. >>>>
> >> Please help me in understanding what does it mens flood link
> >> information >>>>> as in OSPF or ISIS we see next hop cost .....but where
> >> is
> >> link states . Does link state mean Link State ( physicall state up/down)
> >>
> >> Regards
> >>
> >>
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-- 
Regards,
Joe Astorino - CCIE #24347 R&S
Technical Instructor - IPexpert, Inc.
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