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OSPF Quiz
Oct 23rd
I had an interesting conversation the other day regarding OSPF. I don’t want to give too much away, so here we go. This is the topology:
Assume interfaces have correct bandwidth statements and no cost commands have been added. R1 and R2 are redistributing the 192.168.1.0/24 prefix as E2 with a cost of 100.
Which path does R4 take to the 192.168.1.0/24 network? Does it load balance? Explain.
I started a thread on Networking-Forum on this as well. Post your answer here in the comments or over there.
Update: Here’s another question. What happens if we change it to:
Everything is the same except R2 is now redistributing as E1. Which path and why?
No Open Ended Questions for R&S or Voice?
May 6th
According to a post on Networking Forum Cisco is doing away with the OEQs. No idea if this is definitely happening, or when they will announce it if so, but I’m definitely relieved if it’s true. I was dreading the OEQs.
Let’s all hope it’s true!
Obviously it will be one less precaution to stop cheating, but I think it’s also a hindrance to those who do not cheat. I believe with the Troubleshooting and Configuration sections, the CCIE Lab exam is difficult enough.
What do you guys think?
Update: INE has posted this as well.
Wireshark Book Giveaway
May 4th
Steve at Networking-Forum is giving away some copies of the new Wireshark book. Here are the details:
Click image for fullsize
CCNP TSHOOT Exam Topology
Feb 21st
According to a post on Cisco Learning Network, Cisco will be releasing the topology used in the TSHOOT exam:
First, I am part of the exam development team. Second, what am about to reveal is not part of some secret NDA.
The new TSHOOT exam requires you to isolate issues on a defined network topology. The purpose of the exam is to evaluate troubleshooting skills, not how quickly you can grasp a network topology you have never seen. To this end, it is Cisco’s intent that the exam network topology be available for review before the candidate attempt the exam.
However, the wheels seem to move slowly and the network topologies have not been posted on CLN. Because of this I have authorized to make the topologies available through this discussion until they are officially posted.
3550 vs 3560
Feb 15th
I frequently see people asking if 3550s are sufficient for CCIE lab preparation, or if 3560s are a must. Of the top of my head I know that QoS differs between the 3550 and 3560, and also that the 3550s do not support Private VLANs. Beyond that, I can’t say much. Today I stumbled across a comparison from Internetwork Expert. This is really great information. Here’s what they’ve laid out:
Catalyst 3560 Only Features [12.2(25)SEE2]
Access Switch Device Manager (SDM) Template
IEEE 802.3af Power over Ethernet
IGMP Throttling
IPv6 (Internet Protocol Version 6)
MLD Snooping
Private VLANs
VLAN-Based QoS on Physical Ports
SRR (Shaped Round Robin)
Weighted Tail Drop (WTD)
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