Re: LSA Type 4 again

"Allowed" and "will exist" are two different things. I'll let Jeff run
with the idea that they're permitted in NSSA areas 'cause I like Jeff.
However, I will guarantee that they will not exist in NSSA areas. :)

So call it whatever you want!

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

CCSI #21903, JNCI-M, JNCI-ER

swm_at_emanon.com

Knowledge is power.

Power corrupts.

Study hard and be Eeeeviiiil......

Molomo wrote:
> Experts,
>
> Jeff Doyle says LSA type 4 is allowed in nssa area ( see table below). I
> would have thought that since LSA 5 is not permitted then no need to
> generate LSA 4.
>
> My understanding is , ABR generates LSA 4 based on the type 5, to describe
> the position of the ASBR.
>
>
> Or am I missing something here?
>
>
> I have also seen this in Quick Reference Sheet by Anthony Sequeira.
>
>
>
>
> Table 8-5. LSA types allowed per area type.
>
> Area Type
>
> 1&2
>
> 3
>
> 4
>
> 5
>
> 7
>
> Backbone (area 0)
>
> Yes
>
> Yes
>
> Yes
>
> Yes
>
> No
>
> Non-backbone, non-stub
>
> Yes
>
> Yes
>
> Yes
>
> Yes
>
> No
>
> Stub
>
> Yes
>
> Yes
>
> No
>
> No
>
> No
>
> Totally stubby
>
> Yes
>
> No[*]<mk:@MSITStore:C:\Documents%20and%20Settings\user\Desktop\R&S%20CCIE\Recommended%20Reading\Books\Cisco%20press\Jeff%20Doyle\CCIE_Professional_Development_Routing_TCPIP,_Volume_I,_Second_Edition.chm::/1587052024/ch08lev1sec1.html#ch08tn01>
>
> No
>
> No
>
> No
>
> Not-so-stubby
>
> Yes
>
> Yes
>
> Yes
>
> No
>
> Yes
>
> [*] Except for a single type 3 LSA per ABR, advertising the default route
>
>
>
> Regards,
>
> Molomo
>
>
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Received on Sun Sep 06 2009 - 11:20:20 ART