From: Andy Hogard (andyhogard@gmail.com)
Date: Fri Dec 26 2008 - 10:41:17 ARST
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/
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This archive was generated by hypermail 2.1.4 : Thu Jan 01 2009 - 12:53:10 ARST