From: Andy Hogard (andyhogard@gmail.com)
Date: Fri Dec 26 2008 - 14:27:25 ARST
Yeah, R3 never gets it, because it has its own as no in the as-path .. but
then aggergate goes away only when the lo 0 on R1 goes down, R3 never gets
the aggegrate ya!!
*"R1 should NOT use R2 if it's network 3.1.11.0/24 network is down"* which
is also part of the task, and the solution is in co-ordance with the task
..init?!
:-?
On Fri, Dec 26, 2008 at 9:16 PM, Larry <cc13lab@gmail.com> wrote:
> then you would still get 0 points because the aggregate is gone..... read
> the question it is to create an aggregate that R3 does not get.... not R1
>
>
> This aggregation should be done such that
> the R1 in AS 100 is the only AS that recieves the aggregate route,
>
>
>
>
> On Fri, Dec 26, 2008 at 10:39 AM, Andy Hogard <andyhogard@gmail.com>wrote:
>
>> Yeah, I know Narbik must be busy with x-mas ya!! So seeking some help from
>> the group & I thought someone must have done this whilst their practise.
>>
>> Anyways, are you telling this ..because you tested my config or just
>> because you feel so. Lab it up dear, R1 will no longer have the summary ..if
>> its loo 0 ie 3.1.11.0/24 went down. That's infact is the condition in the
>> advertise map on R2. Infact when R1 loo 0 goes down it is only left with
>> 2.0.0.0/8 netowrk in its bgp table. :)
>>
>> So I would still bag points, and besides all this I just wanted to know if
>> this is a valid solution for his task.
>>
>> Cheers!
>>
>> On Fri, Dec 26, 2008 at 8:07 PM, Larry <cc13lab@gmail.com> wrote:
>>
>>> You would get 0 points for the section because R1 will use the summary
>>> address when its 3.1.11.0/24 is down.
>>>
>>> "R1 should NOT use R2 if it's
>>> network 3.1.11.0/24 network is down."
>>>
>>> But why are you asking us?? why not ask Narbik these questions????
>>>
>>>
>>>
>>> -larry
>>>
>>>
>>>
>>> On Fri, Dec 26, 2008 at 7:41 AM, Andy Hogard <andyhogard@gmail.com>wrote:
>>>
>>>> Hey all,
>>>>
>>>>
>>>> This is what *the task* *5 of bgp lab 5 wants us to do "*R2 should
>>>> aggergate
>>>> all the networks in 3.1.0.0 address space and advertise a single
>>>> aggregate
>>>> route that only aggregates the specific routes for subnet under the
>>>> 3.0.0.0
>>>> network in it's BGP table, ensure that the atomic-aggregate attribute is
>>>> not
>>>> attacher to the aggregate route. This aggregation should be done such
>>>> that
>>>> the R1 in AS 100 is the only AS that recieves the aggregate route, R3 in
>>>> AS
>>>> 300 should NOT recieve the aggregate route. R1 should NOT use R2 if it's
>>>> network 3.1.11.0/24 network is down. R3 does not need NLRI to network
>>>> 3.1.11.0/24 advertised by R1.*"*
>>>>
>>>> *Network topolgy,*
>>>>
>>>> R1 -----FR-Cloud----- R2 ------Ethernet ------R3
>>>> 10.1.12.0/24 10.1.23.0/24
>>>>
>>>>
>>>> Hmm, *below is my solution* to achieve this task, *which differs from
>>>> the
>>>> solution mentioned in the w-book..*
>>>>
>>>> *Config on R1,*
>>>>
>>>> version 12.3
>>>> service timestamps debug datetime msec
>>>> service timestamps log datetime msec
>>>> no service password-encryption
>>>> !
>>>> hostname R1
>>>> !
>>>> boot-start-marker
>>>> boot-end-marker
>>>> !
>>>> !
>>>> no aaa new-model
>>>> !
>>>> resource policy
>>>> !
>>>> memory-size iomem 5
>>>> ip subnet-zero
>>>> !
>>>> !
>>>> ip cef
>>>> no ip domain lookup
>>>> no ip dhcp use vrf connected
>>>> !
>>>> !
>>>> no ip ips deny-action ips-interface
>>>> !
>>>> no ftp-server write-enable
>>>> !
>>>> no crypto isakmp ccm
>>>> !
>>>> !
>>>> interface Loopback0
>>>> ip address 3.1.11.1 255.255.255.0
>>>> !
>>>> interface Ethernet0/0
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/1
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/2
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/3
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Serial1/0
>>>> no ip address
>>>> encapsulation frame-relay
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/0.12 point-to-point
>>>> ip address 10.1.12.1 255.255.255.0
>>>> frame-relay interface-dlci 102
>>>> !
>>>> interface Serial1/1
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/2
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/3
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> router bgp 100
>>>> no synchronization
>>>> bgp log-neighbor-changes
>>>> network 3.1.11.0 mask 255.255.255.0
>>>> neighbor 10.1.12.2 remote-as 200
>>>> neighbor 10.1.12.2 allowas-in 1
>>>> no auto-summary
>>>> !
>>>> ip http server
>>>> no ip http secure-server
>>>> ip classless
>>>> !
>>>> control-plane
>>>> !
>>>> !
>>>> line con 0
>>>> exec-timeout 0 0
>>>> logging synchronous
>>>> line aux 0
>>>> line vty 0 4
>>>> exec-timeout 0 0
>>>> logging synchronous
>>>> login
>>>> !
>>>> !
>>>> end
>>>>
>>>> *Config on R2,*
>>>>
>>>> version 12.3
>>>> service timestamps debug datetime msec
>>>> service timestamps log datetime msec
>>>> no service password-encryption
>>>> !
>>>> hostname R2
>>>> !
>>>> boot-start-marker
>>>> boot-end-marker
>>>> !
>>>> !
>>>> no aaa new-model
>>>> !
>>>> resource policy
>>>> !
>>>> memory-size iomem 5
>>>> ip subnet-zero
>>>> !
>>>> !
>>>> ip cef
>>>> no ip domain lookup
>>>> no ip dhcp use vrf connected
>>>> !
>>>> !
>>>> no ip ips deny-action ips-interface
>>>> !
>>>> no ftp-server write-enable
>>>> !
>>>> no crypto isakmp ccm
>>>> !
>>>> !
>>>> interface Loopback0
>>>> ip address 2.2.2.2 255.0.0.0
>>>> !
>>>> interface Ethernet0/0
>>>> ip address 10.1.23.2 255.255.255.0
>>>> full-duplex
>>>> !
>>>> interface Ethernet0/1
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/2
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/3
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Serial1/0
>>>> no ip address
>>>> encapsulation frame-relay
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/0.21 point-to-point
>>>> ip address 10.1.12.2 255.255.255.0
>>>> frame-relay interface-dlci 201
>>>> !
>>>> interface Serial1/1
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/2
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/3
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> router bgp 200
>>>> no synchronization
>>>> bgp log-neighbor-changes
>>>> network 2.0.0.0
>>>> aggregate-address 3.1.0.0 255.255.240.0 as-set summary-only
>>>> advertise-map
>>>> IF_NET_3.1.11.0/24
>>>> neighbor 10.1.12.1 remote-as 100
>>>> neighbor 10.1.23.3 remote-as 300
>>>> neighbor 10.1.23.3 unsuppress-map UNSUP_NET3.1.11.0/24
>>>> default-metric 50
>>>> no auto-summary
>>>> !
>>>> ip http server
>>>> no ip http secure-server
>>>> ip classless
>>>> !
>>>> !
>>>> !
>>>> ip prefix-list NET3.1.11.0/24 seq 5 permit 3.1.11.0/24
>>>> !
>>>> route-map IF_NET_3.1.11.0/24 permit 10
>>>> match ip address prefix-list NET3.1.11.0/24
>>>> !
>>>> route-map UNSUP_NET3.1.11.0/24 permit 10
>>>> match ip address prefix-list NET3.1.11.0/24
>>>> !
>>>> !
>>>> !
>>>> control-plane
>>>> !
>>>> line con 0
>>>> exec-timeout 0 0
>>>> logging synchronous
>>>> line aux 0
>>>> line vty 0 4
>>>> exec-timeout 0 0
>>>> logging synchronous
>>>> login
>>>> !
>>>> !
>>>> end
>>>>
>>>> *Config on R3, *
>>>>
>>>> version 12.3
>>>> service timestamps debug datetime msec
>>>> service timestamps log datetime msec
>>>> no service password-encryption
>>>> !
>>>> hostname R3
>>>> !
>>>> boot-start-marker
>>>> boot-end-marker
>>>> !
>>>> !
>>>> no aaa new-model
>>>> !
>>>> resource policy
>>>> !
>>>> memory-size iomem 5
>>>> ip subnet-zero
>>>> !
>>>> !
>>>> ip cef
>>>> no ip domain lookup
>>>> no ip dhcp use vrf connected
>>>> !
>>>> !
>>>> no ip ips deny-action ips-interface
>>>> !
>>>> no ftp-server write-enable
>>>> !
>>>> !
>>>> no crypto isakmp ccm
>>>> !
>>>> !
>>>> interface Loopback0
>>>> ip address 3.1.0.3 255.255.255.0
>>>> !
>>>> interface Loopback1
>>>> ip address 3.1.1.3 255.255.255.0
>>>> !
>>>> interface Loopback2
>>>> ip address 3.1.2.3 255.255.255.0
>>>> !
>>>> interface Loopback3
>>>> ip address 3.1.3.3 255.255.255.0
>>>> !
>>>> interface Loopback4
>>>> ip address 3.1.4.3 255.255.255.0
>>>> !
>>>> interface Loopback5
>>>> ip address 3.1.5.3 255.255.255.0
>>>> !
>>>> interface Loopback6
>>>> ip address 3.1.6.3 255.255.255.0
>>>> !
>>>> interface Loopback7
>>>> ip address 3.1.7.3 255.255.255.0
>>>> !
>>>> interface Loopback8
>>>> ip address 3.1.8.3 255.255.255.0
>>>> !
>>>> interface Loopback9
>>>> ip address 3.1.9.3 255.255.255.0
>>>> !
>>>> interface Loopback10
>>>> ip address 3.1.10.3 255.255.255.0
>>>> !
>>>> interface Loopback12
>>>> ip address 3.1.12.3 255.255.255.0
>>>> !
>>>> interface Loopback13
>>>> ip address 3.1.13.3 255.255.255.0
>>>> !
>>>> interface Loopback14
>>>> ip address 3.1.14.3 255.255.255.0
>>>> !
>>>> interface Loopback15
>>>> ip address 3.1.15.3 255.255.255.0
>>>> !
>>>> interface Ethernet0/0
>>>> ip address 10.1.23.3 255.255.255.0
>>>> full-duplex
>>>> !
>>>> interface Ethernet0/1
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/2
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Ethernet0/3
>>>> no ip address
>>>> shutdown
>>>> half-duplex
>>>> !
>>>> interface Serial1/0
>>>> no ip address
>>>> encapsulation frame-relay
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/0.34 point-to-point
>>>> ip address 10.1.34.3 255.255.255.0
>>>> frame-relay interface-dlci 304
>>>> !
>>>> interface Serial1/1
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/2
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> interface Serial1/3
>>>> no ip address
>>>> shutdown
>>>> serial restart-delay 0
>>>> no dce-terminal-timing-enable
>>>> !
>>>> router bgp 300
>>>> no synchronization
>>>> bgp log-neighbor-changes
>>>> network 3.1.0.0 mask 255.255.255.0
>>>> network 3.1.1.0 mask 255.255.255.0
>>>> network 3.1.2.0 mask 255.255.255.0
>>>> network 3.1.3.0 mask 255.255.255.0
>>>> network 3.1.4.0 mask 255.255.255.0
>>>> network 3.1.5.0 mask 255.255.255.0
>>>> network 3.1.6.0 mask 255.255.255.0
>>>> network 3.1.7.0 mask 255.255.255.0
>>>> network 3.1.8.0 mask 255.255.255.0
>>>> network 3.1.9.0 mask 255.255.255.0
>>>> network 3.1.10.0 mask 255.255.255.0
>>>> network 3.1.12.0 mask 255.255.255.0
>>>> network 3.1.13.0 mask 255.255.255.0
>>>> network 3.1.14.0 mask 255.255.255.0
>>>> network 3.1.15.0 mask 255.255.255.0
>>>> neighbor 10.1.23.2 remote-as 200
>>>> no auto-summary
>>>> !
>>>> ip http server
>>>> no ip http secure-server
>>>> ip classless
>>>> !
>>>> !
>>>> control-plane
>>>> !
>>>> line con 0
>>>> exec-timeout 0 0
>>>> logging synchronous
>>>> line aux 0
>>>> line vty 0 4
>>>> exec-timeout 0 0
>>>> logging synchronous
>>>> login
>>>> !
>>>> !
>>>> end
>>>>
>>>> *Now while I know my solution is correct, I want some of you experts to
>>>> tell
>>>> me if this was the task on the ccie lab, would I have scored all the
>>>> points
>>>> or none.
>>>> *
>>>>
>>>> *Regards,
>>>> Andy.*
>>>>
>>>> --
>>>> My Blog URL: http://ccieno.blogspot.com/
>>>>
>>>>
>>>>
>>>> --
>>>> My Blog URL: http://ccieno.blogspot.com/
>>>>
>>>>
>>>> Blogs and organic groups at http://www.ccie.net
>>>>
>>>> _______________________________________________________________________
>>>> Subscription information may be found at:
>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>
>>
>> --
>> My Blog URL: http://ccieno.blogspot.com/
>>
>
>
-- My Blog URL: http://ccieno.blogspot.com/Blogs and organic groups at http://www.ccie.net
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