Vito_Corleone
[H]ard|Gawd
- Joined
- Dec 17, 2006
- Messages
- 1,730
They are very different.
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Is there a difference between bpduguard and Cisco Root Guard? both are mentioned in the book but there is no command for Root Guard?
Root Guard lets traffic and BPDU's flow but shuts down the port if a superior bridge ID enters the port to prevent the connected switch from becoming root, according to the book.
Yeah Root Guard is never mentioned in any of the material I used to study. In fact I didn't know about it until now.
It is mentioned briefly in the Cisco ICND2 book with BPDU Guard.
If I want to take the two tests separately, would it be better to go with one CCNA study guide or separate ICND1 and ICND2 study guides?
If I want to take the two tests separately, would it be better to go with one CCNA study guide or separate ICND1 and ICND2 study guides?
Okay, I've narrowed it down to these two guides for the ICND1 640-822.
Exam Cram
Todd Lammle's Guide
Your takes?
Any reason you decided against Cisco press?
I didn't notice it in the search results.
I'm actually about to graduate from college in two weeks. I've worked a lot with Cisco switches and routers, mostly 2811's, 2960's, and 3560's, I just don't have any paid experience. I can configure everything from VLANs, STP, VTP, DHCP, RIPv2, EIGRP, OSPF, Frame Relay, SSH, ACL's, etc in my sleep, and I'd say the same about my knowledge of networking concepts. I thought about taking the one CCNA exam by itself, but after hearing that it's pretty difficult even if you have a basal knowledge, I decided to take the two separately.
After further consideration, I've decided on these two.
ICND1
ICND2/CCNA
I read Todd Lammle's book, as well as the the CCNA for Dummies and watched the CBT Nuggets but the best books I read are the Cisco Press books. I read those last and everything before it seemed to be lacking in the depth that the Official Certification Guide, did sure they were a little more dry then Todd's book but I would take depth of knowledge over fun to read any day.
ICND2 exam next monday!
I'm currently in a bootcamp for a week, but before this i read the Cisco ICND2 book and watched CBT videos. I'm still not scoring real great on the Boson exams but i hope to be up to 80% by saterday. I still have some areas of study that are fuzzy (hold down times, eigrp unequal load balancing, DHCP pools, NAT pools).
I'm drowning in CCNA resources (pdf, video, pod casts, books)
I just started the Cisco Network Academy, downloaded Packet Tracer, looking forward to learning more.
I start next week. Was looking thru the review sections of some of the chapters, and I've already got a handle on most of it, however getting access to Packet Tracer will be nice. Gotta say, I'm pleased with how thorough the material is, covering plenty of media types and a good amount of background.
I did pre-order the Third Edition of the Cisco Press CCNA ICND1/ICND2 pack. It's ~$38 on Amazon and is due out late October. Link From that I may end up just taking ICND1 a bit early rather than waiting until the end of the 2nd semester. If I do go that route, I may end up self-studying for the ICND2. Could take less time and save me the cost of 6-9 credit hours and 2-3 books, but it depends on the materials. Sometimes with time constraints, having the extra structure pays off, and the extra time helps improve retention/depth. I'll know more when I have those ICND books in hand. In the meantime, going to give the Cisco Academy stuff a go.
Edit: Corrected price and added link to Amazon item.
Edit2: More information on the updated set: Link (see description; also sample content lists whats included.. seems very nice.)
ICND2 exam next monday!
I'm currently in a bootcamp for a week, but before this i read the Cisco ICND2 book and watched CBT videos. I'm still not scoring real great on the Boson exams but i hope to be up to 80% by saterday. I still have some areas of study that are fuzzy (hold down times, eigrp unequal load balancing, DHCP pools, NAT pools).
I'm drowning in CCNA resources (pdf, video, pod casts, books)
You never really want to use auto-summarization. Modern networks do not live on classful boundaries.
I get that but also most modern networks don't use RIP and IGRP right?
As for manual summarization. This is used all the time in larger networks. Say you have a WAN with 30 sites. You give each site a /16, from the 10/8 space, which is then chopped up into several /24s (or smaller) for various VLANs at the site. There's no reason to advertise 11ty /24s into the WAN if the site is running a single, contiguous /16.
So 30 sites with a /16 per site, each site is using 30 /24s (conservative number considering how large a /16 really is). Without summarization, your WAN has 900 prefixes. If each site advertises only its /16, you have 30 prefixes.
I get what summarization does but why not leave manual summarization on in this example?
I get that but also most modern networks don't use RIP and IGRP right?
I get what summarization does but why not leave manual summarization on in this example?
IGRP is dead. RIP is around, but not all that common in decent size environments. EIGRP and BGP are obviously very common and they do auto-summarization. I'm not sure what exactly you're asking here.
Do you mean why not leave auto-summarization on? If you leave auto-summarization on, it will summarize to classful boundaries, so all 30 sites would be injecting the same 10/8 into the WAN.
IGRP is dead. RIP is around, but not all that common in decent size environments. EIGRP and BGP are obviously very common and they do auto-summarization. I'm not sure what exactly you're asking here.
Do you mean why not leave auto-summarization on? If you leave auto-summarization on, it will summarize to classful boundaries, so all 30 sites would be injecting the same 10/8 into the WAN.
That is what I am asking. Why not leave auto-summarization on for classless networks? What i got out of the book is you only run into trouble with clasful routing protocols and discontiguous networks when using auto-summarization?
So auto-summarization will also summarize to the class A, B, or C network boundary for all routing protocols?
What do you find the hardest to study on the ICND2?
IGRP is dead. RIP is around, but not all that common in decent size environments. EIGRP and BGP are obviously very common and they do auto-summarization. I'm not sure what exactly you're asking here.
Do you mean why not leave auto-summarization on? If you leave auto-summarization on, it will summarize to classful boundaries, so all 30 sites would be injecting the same 10/8 into the WAN.
Ok i think i got it now.
-autosummarization ALWAYS summarizes to the class A, B, or C boundary and never summarizes a group a subnets?
-To summarize a group of subnets within a classful network you must use manual summariztion.
I was confused because i did not catch in the Cisco ICND2 book that autosummarization ALWAYS summarizes to the classful boundary. I thought it would automatically summarize the group of subnets it knows about like you would want to do with manual summarization.
How come it would not automatically summarize a known group of subnets instead of the entire classful network? I figured it would be called something different like auto-classful-summarization instead of autosummarization. The way i read it in the Cisco book is that it just does manul summarization automatically for you.
So if an ISP or company is given a block from a classful network to use it would use manual summarization for all of their subnets to let the rest of the internet know?
1.)Right now I'm trying to wrap my head around some frame-relay stuff. Like when to use:
router(config-if)#Frame map ip "remote router int" "local DLCI" broadcast
over
router(config-if)framer-relay interface-dlci "local DLCI"
I understand the later is used for point-to-point.
2.)Converting a dynamic nat to nat overload ............. I can read it and see how its done but when it comes to doing it from memory i get messed up.
Oh well 2 day until i pass *crosses fingers*
eek! i have not got to that yet.
1.)Right now I'm trying to wrap my head around some frame-relay stuff. Like when to use:
router(config-if)#Frame map ip "remote router int" "local DLCI" broadcast
over
router(config-if)framer-relay interface-dlci "local DLCI"
I understand the later is used for point-to-point.
2.)Converting a dynamic nat to nat overload ............. I can read it and see how its done but when it comes to doing it from memory i get messed up.
Oh well 2 day until i pass *crosses fingers*
Posted my answer on both forums, lol.
That is what I am asking. Why not leave auto-summarization on for classless networks? What i got out of the book is you only run into trouble with clasful routing protocols and discontiguous networks when using auto-summarization?
So auto-summarization will also summarize to the class A, B, or C network boundary for all routing protocols?
You should have checked on mine
http://www.networking-forum.com/viewtopic.php?f=33&t=25983
Ok i think i got it now.
-autosummarization ALWAYS summarizes to the class A, B, or C boundary and never summarizes a group a subnets?
-To summarize a group of subnets within a classful network you must use manual summariztion.
I was confused because i did not catch in the Cisco ICND2 book that autosummarization ALWAYS summarizes to the classful boundary. I thought it would automatically summarize the group of subnets it knows about like you would want to do with manual summarization.
How come it would not automatically summarize a known group of subnets instead of the entire classful network? I figured it would be called something different like auto-classful-summarization instead of autosummarization. The way i read it in the Cisco book is that it just does manul summarization automatically for you.
So if an ISP or company is given a block from a classful network to use it would use manual summarization for all of their subnets to let the rest of the internet know?
Also, the big thing about manual summarization, you can summarize non- Class A/B/C classes. subnets that branch into smaller subnets, at the access router from that neighbourhood, you wouldn't want to send routes back to the main ISP router for every house. With manual summarization, you can change that so that it summarizes the entire neighbourhood into one subnet so that there are less routes to see from the ISP perspective.
Also, the big thing about manual summarization, you can summarize non- Class A/B/C classes. subnets that branch into smaller subnets, at the access router from that neighbourhood, you wouldn't want to send routes back to the main ISP router for every house. With manual summarization, you can change that so that it summarizes the entire neighbourhood into one subnet so that there are less routes to see from the ISP perspective.
So what i posted for my idea is correct? does it appear that I have it now?
So what i posted for my idea is correct? does it appear that I have it now?
Yup, but you really have to get away from the idea of classful, since nothing really is classful anymore.