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Home > Archive > CCNA > June 2004 > Subnet 0
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| Warfare 2004-06-26, 9:00 am |
| hello everyone.
i have been radingthis forum for a while since I have just started my study for CCNA (based on the cisco academy curriculum).
my question about subnetting is, what I knew so far is that you should never use subnet all 0's or 1's and stick to the usable subnets between the first and last.
I have just found out that cisco routers use "ip subnet zero" and it is enabled by default. So it is actually possible to use subnet all 0's or 1's.
Are there any issues that I need to be aware of when I use those subnets? like the broadcast address of the last subnet (all 1's) = broadcast address of the network ?
where can I find out more about issues regarding using the first and last subnet? | |
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| Warfare 2004-06-26, 8:46 pm |
| Very helpful thread you mention Boulware, also the last URL goldorak posted was an excellent paper. I have already been through the other URL's and found them helpful too.
Thanks guys.
An off-topic question
someone offered me Cisco 2501 + Catalyst 1912 + cisco accessory pack (DTE cables etc) + delivery = £140 / $250 in UK.
is that a bargain? | |
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| ebay advance search completed item only.
sum the parts, take into consideration reliability, shipping, ios version, conditions etc and make your judgement. | |
| Warfare 2004-06-26, 9:35 pm |
| That money includes shipping. and the seller is a Power seller on ebay but he emailed me after I missed some bids and asked for more products.
IOS version..To be honest i have little to no knowledge about IOS and cisco product. I am just investing some money on them because I need all the hands-on practice I can get. I have just started studying. | |
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| right, so you need these information.
the best way is for you to research these and hopefully through reading some discriptions of various auctions you gain some understanding... like hmmm this 2501 wiht 8/8MB sell for 70 bucks, this for 16/16 for x amount... then search for memory kit for 2500, figure in shipping etc. and arrive at a conclusion that is RIGHT for YOU after considering everything including the actual cost, the actual item you are buying and the convenience of one stop purchase.
how many time have ppl come to you thinking they have a bargain and you think they got ripped.... and how many times has the reverse happen. so do some research and be confident that you make the best decision with the information you have at that time.
I pay good premium for convenience, others counts pennies because their time is worthless (edit: or they enjoy it) so they spend it bargain hunting. which category do you belong? answer it for yourself. (upgrading RAM/ROM and IOS is great experience for CCNA candidate) | |
| Warfare 2004-06-26, 10:02 pm |
| That makes sense to me..I have already found out the issues about IOS upgrade and the maintenance fee...what a headache for a student. and some are saying 2600 is the way to go and switch 29** etc..
I will keep on researching | |
| mikop 2004-06-26, 10:13 pm |
| cool, ok here is my opinion since you have taken some steps which is more than most ppl.
1. ios is not an issue, in building your lab, you will eventually come to a loaded 2500, then you can do whatever you want.
2. the contract concern production routers needing support, yours is not online, you support it yourself.
3. there are 2 paths imo that new ppl can take, 1 is to buy a set with everything loaded, they connect cable and log on, open book and type whatever is in the book exactly and boom, they claim to have hands on!!! WOW. 2. you buy whatever, and through the sometimes diffulty process, learn you made a mistake or whatnot and learn. You may learn that gee, I can do everything in the book with my dinky old 11.x or that, damn, I don't have enough ram for 12.x... or that you need to buy a ROM. Then you go to cisco.com/univercd and read some install guide on the 2500 and others. You figure out that you need a transceiver, you figure out WHAT a transceiver is... you do a whole bunch of things that make you serviceable, rather than some bots that can log on and type correctly...
is 2600 better? certainly... is 2600 needed for CCNA, no, is 2600 needed for CCNP, yes. will the 2500 you buy for your ccna be obsolete? no. (well.... don't know how muhc into vlan are the new ccna exam, but I believe it is still in the definition stage...) anyway, you will find that 2500 are still the backbone of many ppls lab... especially their routing lab.
I don't know what switch is in new ccna exam, set base or ios switches.
anyway. my attack path would be
1. buy a book,
2. read the book
3. understand the SCOPE of the book (answer the question regarding swithces... etc etc)
4. formulate plans YOURSELF with others assistance (rather than have one HANDED to you as this is what ppl do... formulate a solution.
5. gather resources to further your studies (buy routers, buy swithces, and since you know the scope of the exam now, you know exactly what you need to have a minimal equip, or a maxed out lab.
6. do the nitty gritty, study hard
7. pass the test
8 be head and shoulder above the rest of ccnas | |
| Sexy Lexy 2004-06-27, 5:24 am |
| Great post Mikop, a common sense and down to earth approach.
Warfare, the new CCNA centres on the 1900 series switch (Still???) and the 2950 series switch.
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| Warfare 2004-06-28, 3:38 pm |
| Thanks folks!
mikop, thanks for your useful 2 cents. I will sure do that because I'm curious by nature and always like to know a bit more than what the book says etc.
I already got the books and found the best additional resource for all networking and cisco issue...Cisco.com!
by the way, I think the new CCNA exam is based on the 2600 router and 2950 switch. but 2600 is an overkill for a CCNA I have learnt, and the 1900 switch is still good enough for the CCNA exam. 2500 with latest IOS (12.x ) support the IOS command set you need for the CCNA exam, while it lacks the enterprise features that 2600 offers which is really not needed for this version of exam.
I have also noticed that CCNA 3.0 is moving more towards some introduction CCNP topics (I have heard its much harder than the previous version).
that's my foundings so far. I thought I share it with the rest of you who might have the same questions as me |
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