So you're saying when we have network

a /27 and network b /26 and network c /24

it would be ok to just advertise in the 32 host routes /p2p links and  the 
networks would still be known without explicitly advertising them in (As in say 
ospf?)
On Jun 24, 2011, at 1:37 PM, Matlock, Kenneth L wrote:

> Maybe I misinterpreted the question, but het, that's never stopped me before 
> :)
> 
> The 'network' statement on the routing protocol doesn't necessarily specify 
> the EXACT netblock to announce.
> 
> The 'network' statement merely gives you what range of netblocks to announce, 
> or establish neighbor adjacencies on. So a 'network 150.50.25.2' statement 
> says to establish neighbor adjacencies with anything 150.50.0.0 range 
> (150.x.x.x is in the class 'B' range, so by default has a /16 netmask unless 
> you tell it different), and announce any connected interfaces that are in the 
> 150.50.0.0/16 range.
> 
> Personally in production I purposely restrict down the network statements to 
> the smallest possible, but that's only so I know it's a 100% conscious 
> decision that I'm injecting a route into the production route tables :)
> 
> Make sense?
> Ken
> 
> ________________________________
> 
> From: [email protected] on behalf of Alef
> Sent: Fri 6/24/2011 4:36 AM
> To: [email protected] IE
> Subject: [OSL | CCIE_RS] vol1 27.2 why are the links in OSPF not advertisedas 
> in EIGRP
> 
> 
> 
> In this task, the the assignment seems the same (apart from the configure the 
> network statements to include the network mask) but the link is advertised as:
> 
> network 150.50.25.2
> 
> and not as 150.50.25.0 0.0.0.3 or 0.0.0.1
> 
> in 27.1 eigrp does advertise as a /30, 0.0.0.3
> 
> is it not best practice to always advertise the networks into any routing 
> protocol properly ?
> 
> Alef
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