Tuesday, February 23

Routing TCP/IP

I started reading the Routing TCP/IP vol 1 book today. I've started with the OSPF chapter. This book is awesome. It is so detailed and yet written in a way that makes the technical informtation easy to digest. It's really bringing out the geek in me.
Posted by at 9:08:00 PM 1 comments
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Sunday, February 21

OSPF Priorities

I wanted to see what would happen if two routers on an ethernet segment were both configured with a priority of 0. Each router also had a loopback interface with OSPF turned on. Basically the routers will only form the 2WAY/DROTHER relationship and no routing updates will be exchanged between the two.
Posted by at 1:49:00 PM 0 comments
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CCIE Study Progress













It's been a few weeks since I decided to begin the journey towards CCIE certification. I went on vacation to Maui shortly after my first post. Unfortunately I broke my leg while boogie boarding after a wave smashed me into the shore. After my surgery I'll be in a cast for 8 weeks. The only good that's really come of it is that now I have alot of time to study. I was originally going to begin with IPV6 but have switched gears to OSPF. After OSPF I'll hit frame relay in depth and then maybe move on to IPV6 and OSPF v3. I've watched a ton of videos and I have been reading the latest CCIE certification book from Cisco press. When I get back home I'll start reading the Routing TCP/IP vol 1 chapters on OSPF. I've also got dynamips and GNS3 installed on my laptop now and have setup a topology that I'm currently using for OSPF features, frame relay and EIGRP for redistribution into an NSSA area. I've gotten a little boost in confidence as I was able to configure the topology without too much hassle and much of the training from the CCNP track is coming back to me even though it's been awhile and I haven't touched OSPF since.

Above is a picture of my current topology.
Below are Router configs from my lab. I plan to next include authentication for the the virtual links and change the point-to-multipoint OSPF topology to NBMA.

!
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
ip subnet-zero
!
ip cef
!
interface Loopback1
ip address 192.168.1.1 255.255.255.255
!
interface Serial1/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial1/0.1 point-to-point
ip address 10.1.1.1 255.255.255.0
ip ospf network point-to-point
ip ospf priority 255
frame-relay interface-dlci 102
!
interface Serial1/0.2 multipoint
ip address 172.16.1.1 255.255.255.0
ip ospf network point-to-multipoint
ip ospf priority 255
frame-relay map ip 172.16.1.3 104 broadcast
frame-relay map ip 172.16.1.2 103 broadcast
!
interface GigabitEthernet2/0
ip address 10.11.11.1 255.255.255.0
ip ospf priority 255
negotiation auto
!
router ospf 1
router-id 1.1.1.1
log-adjacency-changes
area 1 virtual-link 5.5.5.5
network 10.1.1.1 0.0.0.0 area 0
network 10.11.11.1 0.0.0.0 area 1
network 172.16.1.1 0.0.0.0 area 0
network 192.168.1.1 0.0.0.0 area 0
!
ip classless
no ip http server
no ip http secure-server
!
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
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
ip subnet-zero
!
ip cef
!

interface Loopback1
ip address 192.168.2.1 255.255.255.255
!
interface Serial1/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial1/0.1 point-to-point
ip address 10.1.1.2 255.255.255.0
ip ospf network point-to-point
ip ospf priority 0
frame-relay interface-dlci 201
!
interface GigabitEthernet2/0
ip address 172.17.0.1 255.255.255.0
ip ospf priority 255
negotiation auto
!
router ospf 1
router-id 2.2.2.2
log-adjacency-changes
area 2 stub
network 10.1.1.2 0.0.0.0 area 0
network 172.17.0.1 0.0.0.0 area 2
network 192.168.2.1 0.0.0.0 area 0
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
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
ip subnet-zero
!
ip cef
!
interface Loopback1
ip address 192.168.3.1 255.255.255.255
!
interface Serial1/0
ip address 172.16.1.2 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
ip ospf priority 0
serial restart-delay 0
frame-relay map ip 172.16.1.3 301 broadcast
frame-relay map ip 172.16.1.1 301 broadcast
no frame-relay inverse-arp
!
interface FastEthernet2/0
ip address 172.18.0.1 255.255.255.0
ip ospf priority 255
duplex auto
speed auto
!
router ospf 1
router-id 3.3.3.3
log-adjacency-changes
area 3 stub no-summary
network 172.16.1.2 0.0.0.0 area 0
network 172.18.0.1 0.0.0.0 area 3
network 192.168.3.1 0.0.0.0 area 0
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R4
!
boot-start-marker
boot-end-marker
!
no aaa new-model
ip subnet-zero
!
ip cef
!
interface Loopback1
ip address 192.168.4.1 255.255.255.255
!
interface Serial1/0
ip address 172.16.1.3 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
ip ospf priority 0
serial restart-delay 0
frame-relay map ip 172.16.1.1 401 broadcast
frame-relay map ip 172.16.1.2 401 broadcast
!
interface FastEthernet2/0
ip address 172.19.0.1 255.255.255.0
ip ospf priority 255
duplex auto
speed auto
!
router ospf 1
router-id 4.4.4.4
log-adjacency-changes
area 4 nssa default-information-originate no-summary
network 172.16.1.3 0.0.0.0 area 0
network 172.19.0.1 0.0.0.0 area 4
network 192.168.4.1 0.0.0.0 area 0
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R5
!
boot-start-marker
boot-end-marker
!
no aaa new-model
ip subnet-zero
!
ip cef
!
interface Loopback1
ip address 192.168.5.1 255.255.255.255
!
interface GigabitEthernet1/0
ip address 10.11.11.2 255.255.255.0
negotiation auto
!
interface GigabitEthernet2/0
ip address 10.11.12.1 255.255.255.0
ip ospf priority 255
negotiation auto
!
router ospf 1
router-id 5.5.5.5
log-adjacency-changes
area 1 virtual-link 1.1.1.1
network 10.11.11.2 0.0.0.0 area 1
network 10.11.12.1 0.0.0.0 area 5
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R6
!
boot-start-marker
boot-end-marker
!
no aaa new-model
ip subnet-zero
!
ip cef
!
interface GigabitEthernet1/0
ip address 172.17.0.2 255.255.255.0
negotiation auto
!
router ospf 1
router-id 6.6.6.6
log-adjacency-changes
area 2 stub
network 172.17.0.2 0.0.0.0 area 2
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R7
!
boot-start-marker
boot-end-marker
!
no aaa new-model
ip subnet-zero
!
ip cef
!
interface FastEthernet1/0
ip address 172.18.0.2 255.255.255.0
duplex auto
speed auto
!
router ospf 1
router-id 7.7.7.7
log-adjacency-changes
area 3 stub
network 172.18.0.2 0.0.0.0 area 3
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R8
!
boot-start-marker
boot-end-marker
!
no aaa new-model
ip subnet-zero
!
ip cef
!
interface Loopback1
ip address 18.208.193.4 255.255.192.0
!
interface FastEthernet1/0
ip address 172.19.0.2 255.255.255.0
duplex auto
speed auto
!
router eigrp 10
passive-interface FastEthernet1/0
network 18.208.192.0 0.0.63.255
no auto-summary
!
router ospf 1
router-id 8.8.8.8
log-adjacency-changes
area 4 nssa
redistribute eigrp 10 metric 50 subnets
network 172.19.0.2 0.0.0.0 area 4
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end

!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R9
!
boot-start-marker
boot-end-marker
!
no aaa new-model
ip subnet-zero
!
ip cef
!
interface GigabitEthernet1/0
ip address 10.11.12.2 255.255.255.0
negotiation auto
!
router ospf 1
router-id 9.9.9.9
log-adjacency-changes
network 10.11.12.2 0.0.0.0 area 5
!
ip classless
no ip http server
no ip http secure-server
!
gatekeeper
shutdown
!
line con 0
exec-timeout 0 0
stopbits 1
line aux 0
stopbits 1
line vty 0 4
!
end



Posted by at 12:51:00 PM 0 comments
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Saturday, February 20

SecureCRT GNS3 and Windows 7 Console Issue

I was having issues getting securecrt to work on Windows 7 with GNS3 as the telnet client. I found this link which helped me solve the problem:

http://www.gns3.net/phpBB/topic1246.html


My string for Terminal Command now looks like:

start C:\PROGRA~2\SecureCRT\securecrt.exe /T /telnet 127.0.0.1 %p

Apparently it was translating to the IPV6 address for local host. So replace %h with 127.0.0.1 and it works.

You also don't need the securecrt.vbs script in Windows 7 I guess.

Tabbed Console sessions for GNS3!
Posted by at 12:48:00 PM 1 comments
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Monday, February 1

CCIE

I've decided to begin studying for the CCIE R&S exam. During my studying most of my posts to this blog will be about the CCIE and what I'm studying for at the time. I've decided to tackle IPV6 first, since that was my weakest area when I was taking the CCNP tests. Alot more to come....
Posted by at 10:05:00 PM 0 comments
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