Re: ISIS Hello Interval

I don't see ISIS on the most recent R&S v4.0 blue print.

--- On Fri, 10/8/10, srinivas pv <vsrinivas.paturi_at_gmail.com> wrote:

From: srinivas pv <vsrinivas.paturi_at_gmail.com>
Subject: Re: ISIS Hello Interval
To: "Edward John" <edwardjohn2020_at_googlemail.com>
Cc: "Cisco certification" <ccielab_at_groupstudy.com>, "Cisco certification"
<cisco_at_groupstudy.com>
Date: Friday, October 8, 2010, 3:34 AM

Hi,

hell-interval value (is-is hell-interval) is in seconds.

Now why they need to configure 58, when to configure 19 sec as
hello-interval?

On DIS interfaces, only one third of the configured value is used. Please
see 'Note' below

http://www.cisco.com/en/US/docs/ios/iproute_isis/command/reference/irs_is1.ht
ml#wp1013730

So it may be DIS interface here. But still value of 57 is sufficient, not
sure why 58.

Thanks,
Srinivas

On Fri, Oct 8, 2010 at 1:13 AM, Edward John
<edwardjohn2020_at_googlemail.com>wrote:

> Dear Experts,
>
> What is the unit of Hello-interval value shown under the interface?
> Seconds or a Numeric factor..
>
> While I am doing IEM vol-1 I found that to configure 19 sec as
> hello-interval Solution Guide presents the config as "isis hello-interval
> 58"
>
> In INE I am seeing that as just taken as seconds (vol2 - lab 4) . When
> question asks to configure 5 sec hello-interval, SG presents as "isis
> hello-interval 5".
>
>
> Command reference says its seconds:
> Setting the Advertised Hello Interval
>
> You can specify the length of time (in seconds) between hello packets that
> the Cisco IOS software sends on the interface.
>
> To specify the length of time between hello packets for the specified
> interface, use the following command in interface configuration mode:
>
> Command
> Purpose
>
> Router(config-if)# *isis hello-interval* {seconds | *minimal*}*
> *[*level-1*|
> * level-2*]
>
> Specifies the length of time (in seconds) between hello packets the Cisco
> IOS software sends on the specified interface.
>
>
>
>
http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/1cfisis.html#
wp1001038
>
>
> Which one is right?
> --
>
> *Regards,*
> *John*
>
>
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Received on Fri Oct 08 2010 - 23:37:58 ART