From: Salau, Yemi (yemi.salau@siemens.com)
Date: Wed Jul 11 2007 - 07:02:43 ART
Also this problem rise another one. What is the best way to announce net
in a protocol?
"That will depend on the school of thought you follow"
Just to put the interface in the protocol with same command (where the
protocol permit) or to announce the entire network?
A school of thought prefers matching specific interface, that way you
can control on which interface routing protocols are "activated" on, so
that when newer interfaces are configured under that subnet, they would
not participate in the routing process especially when you don't want to
allow them to.
What do you think about the grading in the real exam? I will get the
points if i announce the /32 net. (of course if the task does not
restrict me in any way, just says put this net/interface in the protocol
domain)
This doesn't deduct your points I would imagine, but you need to be
aware of this: if the interface has mask of /24 and you bring it into
EIGRP, it's network will come in as /24 wether you use "network x.x.x.x
0.0.0.0" or "network x.x.x.x 0.0.0.255"
But if the interface has a mask of /32, it's network will come in as
/32. The only exception I can think of is bringing in loopback
interfaces into OSPF, those are treated as host routes by default and
you need to made changes if required.
But the bottom line is, no one will deduct you points so far at the end
of the day you activate the routing process on required interfaces.
Many Thanks
Yemi Salau
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Cristian Ionescu
Sent: Wednesday, July 11, 2007 8:13 AM
To: Dan C
Cc: George Roman; Mark Mckillop (mmckillo); ccielab@groupstudy.com
Subject: Re: do not send Eigrp Hello on interfaces
Thanks for all responses.
I think the optin with net x.x.x.x 0.0.0.0 is the right one. I do not
think that ACL is the soltion.
Also this problem rise another one.
What is the best way to announce net in a protocol?
Just to put the interface in the protocol with same command (where the
protocol permit) or to announce the entire network?
What do you think about the grading in the real exam? I will get the
points if i announce the /32 net. (of course if the task does not
restrict me in any way, just says put this net/interface in the protocol
domain)
Thanks
Dan C wrote:
> Hi George,
>
> If you need to add any other interfaces into eigrp you will need just
to use
> 0.0.0.0 for them again eg:
>
> router ei 100
> net 1.1.1.1 0.0.0.0
> net 1.1.2.1 0.0.0.0
>
> this way no hellos will be sent out but on those 2 interfaces.... You
can
> verify using debug eigrp packets hello
> Cheers,
> Dan
>
> On 7/10/07, George Roman <georgeroman@gmail.com> wrote:
>
>> You are right about that. if you put the wildcard mask of 0.0.0.0
only
>> that
>> interface will participate in eigrp process, but if you want some
other
>> networks (on other interfaces) to get advertised into eigrp, i think
the
>> only solution is to put those interfaces in eigrp and use ACLs so you
will
>> not send hellos on them (ACLs because as Cristian said, the
>> passive-interface command is forbidden).
>>
>> George
>>
>> On 7/10/07, Mark Mckillop (mmckillo) <mmckillo@cisco.com> wrote:
>>
>>> I think the point is to use the 0.0.0.0 in the network statement to
>>> specify just the precise interfaces that you want enabled in the
EIGRP
>>> process.
>>>
>>> i.e. network 150.1.1.1 0.0.0.0 -> Just the interface with that
specific
>>> address
>>>
>>> Mark.
>>>
>>> -----Original Message-----
>>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
>>> George Roman
>>> Sent: 10 July 2007 12:32
>>> To: Cristian Ionescu; ccielab@groupstudy.com
>>> Subject: Re: do not send Eigrp Hello on interfaces
>>>
>>> I think one of the options that you have to filter eigrp is extended
acl
>>> (specify the protocol eigrp)
>>>
>>> George
>>>
>>> On 7/10/07, Cristian Ionescu <cristian.ionescu@omnilogic.ro> wrote:
>>>
>>>> Hi
>>>>
>>>> I have a task where it says to not send eigrp hello on interfaces
that
>>>>
>>>> are not part of the eigrp domain but not to use passive-interface.
>>>> It is ok to use neighbor?
>>>> I have 4 routers on domain. I need to put in one router all 3 other
>>>> routers?
>>>>
>>>> If i put under the router eigrp x menu, network y.y.y.y 0.0.0.0
will
>>>> have the same result?
>>>>
>>>> Thanks
>>>>
>>>>
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