₦airaland Forum

DanIndia:
The core layer switches are screaming "Replace us with L3 switches"
Is this something you implemented on a site ?
I don't like to tell anyone what to do regarding their hierarchical design as this is something Cisco themselves defined as a logical model. You can replace whatever you want with what you want - as long as you can handle any issue come any may.
That being said, I was hoping I'd see at least a router in your topology. Why!!!!??
Are you planning to implement VLANS and eradicate the need for Routers...?

Also One question. I would like to achieve a design using a FRAME-RELAY, where branches (ROUTERS) with dlci 102, 103, 104 and communicate with the CORE dlci 101 with being neighbours yet branches can receive updates of subnets.

henryskywalker2003:
Hi Snipesdam

Lol. I haven't "experimented" with redundancy on a large scale but I have actually implemented that. Now let me give you reasons why I say it is poorly designed based on what I am seeing on your diagram.

1. No one uses ROAS on an enterprise network if you want to implement redundany. If you can think back on the concept of ROAS, the vlans get routed using a single device which in your case is the router. Now the router isn't as fast as a switch is because it is software based unlike the switch that uses the ASIC which is a hardware implementation. Again, the way the ROAS works means that all the traffic comes to the router and exits it on a single port. Now imagine having a large amount of traffic coming and leaving the router on a 100mbps or 1gbps link. So, you will agree with me that ROAS isn't the way to go in this case.

2. Strictly speaking, I think you designed the network on the left to look good rather than to be functional, same thing for the bottom one. I mean, take a look at the way you arranged your switches. You didn't follow the basic hierachy of design which means that you should have an Access, Distribution and Core Layers, or at least have a Collapsed Core where you merge your Distribution and Core Layers. When STP kicks in, which it will or else you will have loops, All your redundant links will go down and you will effectively have only single working links at any given time, because the redundant ones will be blocked and hence not being used. So, in essence, you have a couple of links siting there doing nothing.

3. STP issues. Still on the network on the left, now, I don't know the config on those devices, but let's assume that the switch closest to the router gets elected to be the root bridge. Now, unless you specifically tweaked it, you know that what follows can be very random. Every switch finds the best way to get to the root bridge and still does that based on the same way that the root bridge is elected which means the oldest device/ lowest priority/lowest port number. So, imagine if the leftmost switch has a lower priority/mac/port number than that of the two switches connected to it and they in turn are lower than the other two, that means that the two switches closest to the root bridge will end up going all the way back to the leftmost switch in other to reach a root bridge that is directly connected to it. So, you need to re-arrange ur switches and optimise them for STP, which brings me to the next reason

4. STP presence. Looking at that network, it is obvious that you are using STP on the network. If you want a network with redundancy and high availability and very fast failovers, then you need to get rid of STP totally. This is 2015 for crying out loud, STP takes at best 15-30secs to failover. That is not good at all for any enterprise network. Even Cisco recommends that you get rid of STP on your network unless you ABSOLUTELY need it. So, designing an enterprise network with STP in mind and ending up designing it poorly isn't good at all.

5. Redundancy for the sake of redundancy is bad. You don't just start throwing redundant links just for the sake of it. Looking at your links, you even connected Access switches together which is also a terrible design. Access switches should ALWAYS be separate from each other unless they are feeding the same Vlans/subnet.

6. IP phones were eating up network ports. Why give your ip phones and PCs different ports when you can easily use one port on ur switch for an ip phone and a pc. The ip phones have an in built switch so, you can plug in your pc into the back of the ip phone and while the phone gets pluged into the switch. In the basic form, you can configure the native vlan of the switch to be that of the pc to still have your vlans working and if your switch supports it, you can configure a voice and access vlan on a single port.

I will like to see your configs on your network and also you ip address scheme.

ellechrystal:
Haa, please I suppose u two ve a chat about this, sit him down n tell him how u feel, n u too try on ur own part to always remain sharp n sexy, do stuffs that will get him turned in 24/7.
U two should talk really.
It's a bad one. Lack of sex in marriages can lead to lack of communication n closeness, the connecting factor will b absent,.
N don't be too sure he isn't seeing anyone aside u.
U two should ask ur selves questions, there is obviously a reason he is doing that.
Maybe u ain't too good in bed, or maybe he has GAY tendencies, u never know.
That's y I proposed you talk to him.
I wish u all d best. Bless u

DanIndia:
You are somewhat correct on the idea of router-on-a-stick but for the sake of labbing I don't think there is a limit on to how many routers you want to configure or else if this topo is designed for a real live network site. And by the redudancy, You never enough to achieve redundancy o. You never know what links or what ports may go at whatever time.

henryskywalker2003:
Just took a second look at it, and I must say that for an enterprise network, it is poorly designed. Just looking at the network segment on the left is giving me a headache. And you mentioned doing a router on a stick, with all these devices you have in place here, why would you want to do an ROAS? That is for a small sized network with fewer devices. On yours, you have enough to achieve redundancy and no need for an ROAS. You actually tried to go for redundancy on the left segment but you went overboard with it. Same goes for the network at the bottom.

adewalle1:
hide their ATM cards and give them back Jan ending perfect gift

Futureprexdent1:
Please poster be properly guarded..... There's nothing like Xmas rather Christmas. Thanks for ur understanding.

MizTyna:
What's ur budgeT?

Kirinwa:
Make a larger one then or get them durex special order.

lionduke:
Get your dad a whiskey, vest, boxers, and pyjamas. give mummy a wrapper and cash to accompany. then get the new one hundred naira note and share the young ones.

zumarock9:
for your mom, get her a wrapper
for ur dad, a pack of condom and whisky will do

alutacontinua:
Make a painting of both of them together

MrNixon:
Sometimes parents are hard to impress when it comes to giving them gift but reasonably speaking they somehow get to appreciate gifts from their kids cus even when they feel its their money you are spending on them, they have no choice but to think that you care about them.
Now why don't you get a nice hamper that would contain stuffs that you know they like.
Obviously your parents won't need fashion stuffs that you could give your pals on a normal day so you have to put stuffs that your mum wud like to see in her kitchen or bedroom and then stuffs your dad would like to use regularly like nice shaving sticks, a good nite wear and maybe something like a nice shirt of his size.

Well this is just my opinion sha...

I hope ur parents would appreciate whatever you can finally afford.

Yomieluv:
Range rover autobiography will do.

ice234:
Just checking olx, saw 2013 Venza for 2M, call the guy he told me to pay 50k for the driver to deliver it to me... I had to laff cos I knew. It was a scam.

NB: does olx actually action good scam-free cars?

abatically:
U want more opinions? U want someone to actually convince u that customs advertise auctions online, well OK yes it is true.

Call this number 080419419419. We have 2010 Toyota Camry for just N250,000, 2013 range rover sport for N400,000.