Re: Link state protocol

Hi,

where is the state of the LINK ( up/down) in the output.

Regards

On Thu, Sep 17, 2009 at 3:00 PM, Joe Astorino <jastorino_at_ipexpert.com>wrote:

> 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.
> Cell: +1.586.212.6107
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Received on Thu Sep 17 2009 - 15:02:58 ART