Today while spending some time at InterNetwork Expert Support Community AKA ieoc, I came across yet another good post on CCIE Preparation. IMHO ... A must read kind of stuff.
http://ieoc.com/forums/p/13749/124473.aspx#124473
HTH...
Deepak Arora
Tuesday, November 9, 2010
Friday, November 5, 2010
Wednesday, November 3, 2010
OSPF Mock Lab 1 - Finally Out
Click Image To Enlarge
As I promised earlier, Finally the I am proud to announce about release of OSPF Mock Lab-1 & Trust me it's not going to be easy one :-)
But on the other hand I won't be able to work on any more Protocol Based Mock lab until I pass my R&S Lab which is scheduled for April End 2011. Reason being is that developing such material takes significant time. The OSPF mock lab was supposed to come out in two parts with around 25-30 Tasks each. But you guys must wait for OSPF Mock Lab 2 now.
But still I am trying my best to bring entertainment for all readers in terms of learning.
With that being said, here is quick link for downloading list of tasks file. Again I would suggest to use Foxit Acrobat reader incase you guys can't see it properly in Adobe Acrobat reader. The password for PDF file is again - deepakarora
http://www.4shared.com/document/aMZ5tu_-/OSPF_Mock_Lab_1_-_List_of_Task.html
Logical topology you can see above. For GNS physical topology refer the diagram:
https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiKPI1WpViLsaY4fnQLtJLbx-85B5G2cwEEGPP5_YF2J-6Wak-C1ksZtSabWH0eK3CmV4Iqm7wVRnSoYBIP4nR6zYXIJx5MfCqdSJ_wu142sQR7SotHN8E39_aCHDVpumwxcJfgY9cnOyY/s1600/OSPF+Mock+Lab+Topology.png
Here is the quick link to download initial configuration file that you would need for each router. Also I added some troubleshooting. So watch out for that :-)
As your OSPF peerings may not come up easily. For getting solution for any of tasks send me an email at - deepakarora.1984@gmail.com with your comments about Blog and Mock Labs.
http://www.4shared.com/document/Oxt5Zp_2/OSPF_Mock_Lab_Initials.html
HTH...
Deepak Arora
Wednesday, October 27, 2010
OSPF Mock Lab (Including Troubleshooting) ...Under Developement
Click Image To Inlarge
### Initials ####
^^^ R1 ^^^
------------------
en
!
conf t
!
ho R1
!
no ip domain loo
!
int f0/0
ip add 145.145.145.1 255.255.255.0
ip ospf 1 a 4589
mtu 1496
ip ospf net point-to-m
ip ospf hello 5
ip ospf dead 20
no sh
exit
!
int f0/1
ip add 81.81.81.1 255.255.255.0
ip ospf 1 a 81
no sh
exit
!
int f1/0
ip add 19.19.19.1 255.255.255.0
ip ospf 1 a 19
no sh
exit
!
int s0/0
ip add 123.123.123.1 255.255.255.0
en f
no frame inv
frame map ip 123.123.123.2 102
frame map ip 123.123.123.3 103
ip ospf 1 a 0
no sh
exit
!
int lo0
ip add 1.1.1.1 255.0.0.0
ip ospf 1 a 4589
exit
!
int lo1
ip add 11.11.11.11 255.0.0.0
ip ospf 1 a 0
exit
!
int lo2
ip add 110.110.110.110 255.0.0.0
ip ospf 1 a 81
exit
!
int lo3
ip add 111.111.111.111 255.0.0.0
ip ospf 1 a 19
exit
!
router ospf 1
router-id 255.255.255.1
exit
!
end
!
wr mem
!
==========================================
^^^ R2 ^^^
------------------
en
!
conf t
!
ho R2
!
no ip domain-loo
!
int s0/0
ip add 123.123.123.2 255.255.255.0
en f
no frame inv
frame map ip 123.123.123.1 201
frame map ip 123.123.123.3 201
ip ospf 1 a 0
no sh
exit
!
int f0/0
ip add 124.124.124.2 255.255.255.0
ip ospf 1 a 237
no sh
exit
!
int lo0
ip add 2.2.2.2 255.0.0.0
ip ospf 1 a 0
exit
!
int lo1
ip add 22.22.22.22 255.0.0.0
ip ospf 1 a 237
exit
!
router ospf 1
router-id 255.255.255.2
!
end
!
wr mem
!
==========================================
^^^ R3 ^^^
------------------
en
!
conf t
!
ho R3
!
no ip domain-loo
!
int s0/0
ip add 123.123.123.3 255.255.255.0
en f
no frame inv
frame map ip 123.123.123.1 301
frame map ip 123.123.123.2 301
ip ospf 1 a 0
no sh
exit
!
int f0/0
ip add 124.124.124.3 255.255.255.0
ip ospf 1 a 237
no sh
exit
!
int f0/1
ip add 103.103.103.3 255.255.255.0
no sh
exit
!
int lo0
ip add 3.3.3.3 255.0.0.0
ip ospf 1 a 0
exit
!
int lo1
ip add 33.33.33.33 255.0.0.0
ip ospf 1 a 237
exit
!
router ospf 1
router-id 255.255.255.3
exit
!
router rip
v 2
no au
net 103.0.0.0
redistribute ospf 1 metric 7
exit
!
end
!
wr mem
!
==========================================
^^^ R7 ^^^
------------------
en
!
conf t
!
ho R7
!
no ip domain-loo
!
int f0/0
ip add 124.124.124.7 255.255.255.0
ip ospf 1 a 237
no sh
exit
!
int lo0
ip add 7.7.7.7 255.0.0.0
ip ospf 1 a 237
exit
!
int lo1
ip add 77.77.77.77 255.0.0.0
ip ospf 1 a 237
exit
!
router ospf 1
router-id 255.255.255.7
!
end
!
wr mem
!
==========================================
^^^ R4 ^^^
------------------
en
!
conf t
!
ho R4
!
no ip domain-loo
!
int f0/0
ip add 145.145.145.4 255.255.255.0
ip ospf 1 a 4589
ip ospf net point-to-m
no sh
exit
!
int lo0
ip add 4.4.4.4 255.0.0.0
ip ospf 1 a 4589
exit
!
int s0/0
ip add 64.64.64.4 255.255.255.0
no sh
exit
!
router ospf 1
router-id 255.255.255.4
exit
!
router eigrp 645
net 64.64.64.4 0.0.0.0
no au
redistribute ospf 1 metric 1 1 1 1 1
exit
end
!
wr mem
!
==========================================
^^^ R5 ^^^
------------------
en
!
conf t
!
ho R5
!
no ip domain-loo
!
int f0/0
ip add 145.145.145.5 255.255.255.0
ip ospf 1 a 4589
ip ospf net point-to-m
no sh
exit
!
int lo0
ip add 5.5.5.5 255.0.0.0
ip ospf 1 a 4589
exit
!
int s0/0
ip add 65.65.65.5 255.255.255.0
no sh
exit
!
router ospf 1
router-id 255.255.255.5
exit
!
router eigrp 645
net 65.65.65.5 0.0.0.0
no au
exit
!
end
!
wr mem
!
==========================================
^^^ R8 ^^^
------------------
en
!
conf tredistribute ospf 1 metric 1 1 1 1 1
!
ho R8
!
no ip domain-loo
!
int f0/0
ip add 81.81.81.8 255.255.255.0
ip ospf 1 a 81
no sh
exit
!
int lo0
ip add 8.8.8.8 255.0.0.0
ip ospf 1 a 81
exit
!
router ospf 1
router-id 255.255.255.8
end
!
wr mem
!
==========================================
^^^ R9 ^^^
-------------------
en
!
conf t
!
ho R9
!
no ip domain-loo
!
int f0/0
ip add 19.19.19.9 255.255.255.0
ip ospf 1 a 19
no sh
exit
!
int lo0
ip add 9.9.9.9 255.0.0.0
ip ospf 1 a 19
exit
!
router ospf 1
router-id 255.255.255.9
end
!
wr mem
!
==========================================
^^^ R10 ^^^
--------------------
en
!
conf t
!
ho R10
!
no ip domain-loo
!
int f0/0
ip add 103.103.103.10 255.255.255.0
no sh
exit
!
int lo0
ip add 200.200.0.1 255.255.255.0
!
int lo1
ip add 200.200.1.1 255.255.255.0
!
int lo2
ip add 200.200.2.1 255.255.255.0
!
int lo3
ip add 200.200.3.1 255.255.255.0
!
int lo4
ip add 200.200.4.1 255.255.255.0
!
int lo5
ip add 200.200.5.1 255.255.255.0
!
int lo6
ip add 200.200.6.1 255.255.255.0
!
int lo7
ip add 200.200.7.1 255.255.255.0
exit
!
router rip
v 2
passive-interface default
no au
net 0.0.0.0
exit
!
end
!
wr mem
!
==========================================
^^^ R6 ^^^
------------------
en
!
conf t
!
ho R6
!
no ip domain-loo
!
int s0/0
ip add 64.64.64.6 255.255.255.0
no sh
exit
!
int s0/1
ip add 65.65.65.6 255.255.255.0
no sh
exit
!
int lo0
ip add 150.0.0.1 255.255.255.0
!
int lo1
ip add 150.0.1.1 255.255.255.0
!
int lo2
ip add 150.0.2.1 255.255.255.0
!
int lo3
ip add 150.0.3.1 255.255.255.0
exit
!
router eigrp 645
net 0.0.0.0 255.255.255.255
no au
exit
!
end
!
wr mem
!
================================================
Tuesday, October 26, 2010
Things that must match in order to form OSPF Adjacency
This is going to be a real short post but still good to know and important too :-)
Here is quick list of things that must match between two OSPF Neighbors in order to form adjacency.
1. Area-ID must match.
2. Subnet Mask of interface (Except For Point-To-Point
interface types & Virtual-Links)
3. Authentication Type & Authentication Password
4. Stub Flag (AKA E-Bit)
5. Timers (Hello & Dead)
6. Compatible Network Types ( Broadcast Vs Non-Broadcast / P2P
Vs P2M Vs P2M non- broadcast)
7. MTU
8. Capability LLS (Could Be)
9. Passive Interface
Note:- Although MTU is not part of requirements in General but it must match in order to exchange database. You can however make router not to consider it as part of negotiation by using command " ip ospf mtu-ignore". Command only needs to put on side with lower MTU supported. Another cool new way to do it is " system mtu routing " for Catalyst Switches without changing System MTU for rest of operations but just for Routing Operations.
HTH...
Deepak Arora
Here is quick list of things that must match between two OSPF Neighbors in order to form adjacency.
1. Area-ID must match.
2. Subnet Mask of interface (Except For Point-To-Point
3. Authentication Type & Authentication Password
4. Stub Flag (AKA E-Bit)
5. Timers (Hello & Dead)
6. Compatible Network Types ( Broadcast Vs Non-Broadcast / P2P
Vs P2M Vs P2M non- broadcast)
7. MTU
8. Capability LLS (Could Be)
9. Passive Interface
Note:- Although MTU is not part of requirements in General but it must match in order to exchange database. You can however make router not to consider it as part of negotiation by using command " ip ospf mtu-ignore". Command only needs to put on side with lower MTU supported. Another cool new way to do it is " system mtu routing
HTH...
Deepak Arora
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