SOMETHING: Cisco Dietz |
- SOMETHING: Cisco Dietz
- Link aggregation: Arista, Blade and Cisco fare best - Network World
- Storage/data convergence: Cisco stands alone - Network World
- Cisco Network Simulator 7 – for CCNP Exam free download keygen …
- Purenetworks-Cisco Speed Meter Pro v1.2.8289
- Cisco 2950 Switch VLAN & Trunking Lab | Current Articles
- Cisco Voice Engineer Position (Denver) | Telecommute Job List
- Gmail of foreign journalists in China hijacked
- What Gmail hack? China spins news of Google threat
- User Authentication No Longer Thwarts Online Bank Thieves
- European governments warn against Internet Explorer
- Cisco Switch Network Design
- Cisco Powers Through the Recession | Apple Iphone and Tech News
- SUPREME[ZZ]: Cisco Unity v4.3 Platform IBM DSK Kit
- TipAdept Dot Com » Cisco Powers Through the Recession
- CiscoPress – Deploying Cisco Wide Area Application Services | Free …
- Cornerstone buys Cisco buildings – North San Francisco Bay Area …
- Cisco ASA 5510 Firewall : Basic Configuration Tutorial …
- Cisco certification>>huaer » Blog Archive » Exambible COG-122 exam …
- CISCO Site to Site VPN | Projects for Freelancers
| Posted: 18 Jan 2010 11:12 AM PST Cisco Dietz · A Collection a Day, 2010 · Finding the extraordinary · Soft-Maps · The Selby · Build Your Own Business Website · Sarcococca · Hannah Nunn · Frozen Britain · Arranged · Frank Tjepkema · Cowch · Barbie goes Gaga · Juicy … See the original post: |
| Link aggregation: Arista, Blade and Cisco fare best - Network World Posted: 18 Jan 2010 07:00 AM PST Although link aggregation combines ports, it's not necessarily the case that throughput will scale linearly with port count. Read the original here: |
| Storage/data convergence: Cisco stands alone - Network World Posted: 18 Jan 2010 07:00 AM PST Data center switches offer the promise of combining previously separate data and storage networks, thus reducing capital expense costs. However, the switches tested take different approaches to convergence. Read more from the original source: |
| Cisco Network Simulator 7 – for CCNP Exam free download keygen … Posted: 18 Jan 2010 10:11 AM PST Hi,Hands-on training without the hardware.Boson NetSim software is an application that simulates Cisco Systems' networking hardware and software and is designed. View post: |
| Purenetworks-Cisco Speed Meter Pro v1.2.8289 Posted: 18 Jan 2010 09:13 AM PST Purenetworks- Cisco Speed Meter Pro v1.2.8289. Read the original here: |
| Cisco 2950 Switch VLAN & Trunking Lab | Current Articles Posted: 18 Jan 2010 08:28 AM PST In preparation of your CCNA exam, we want to make sure we cover the various concepts that we could see on your Cisco CCNA exam. So to assist you, below we provided one of our CCNA Labs, Cisco 2950 Switch VLAN & Trunking Lab. Continued here: |
| Cisco Voice Engineer Position (Denver) | Telecommute Job List Posted: 18 Jan 2010 07:59 AM PST Denver based technology consulting company is seeking a Cisco Certified voice engineer to work on projects with it's Senior Voice Engineers. The candidate will need to possess their CCNA-V and/or working toward their CCVP and possess … Read the original post: |
| Gmail of foreign journalists in China hijacked Posted: 18 Jan 2010 08:00 AM PST The Gmail accounts of foreign reporters in at least two news bureaus in Beijing have been hijacked, a journalists' group in China said Monday. |
| What Gmail hack? China spins news of Google threat Posted: 18 Jan 2010 08:00 AM PST Chinese state media has spun Google's threat to leave China as a purely commercial move, as authorities there apparently work to limit discussion of human rights issues raised by Google. |
| User Authentication No Longer Thwarts Online Bank Thieves Posted: 18 Jan 2010 08:00 AM PST A Gartner analyst says banks need to take more steps to prevent online fraud, because cybercrooks are outmaneuvering current authentication techniques. |
| European governments warn against Internet Explorer Posted: 18 Jan 2010 08:00 AM PST The French government has become the second in days to warn its citizens to steer clear of Internet all versions of Explorer (IE) until a serious security flaw is fixed in the browser. |
| Posted: 18 Jan 2010 08:59 AM PST I was browsing the Cisco support forum the other day and found the following question post which is about designing a Cisco switched network. Some useful answers are given, so I thought I would repost here for my blog readers. You will find useful tips about switch port dimensioning, redundancy etc. I Hope you find it useful. Initial Post Question Hello all, I am relatively new to networking and am currently doing some theory work with network design to gain some knowledge. I'm sure you have all been there!! I have a specification which details the needs for the network across a large campus, including number of users, their bandwidth usage, their locations, overall budget etc. I have chosen what servers are need and their locations, and the number of routers needed and their connectivity to each other to build in redundancy. My next step is to calculate how many switches will be needed for each building to get all the users onto the network and this is where I am getting quite confused. My understanding is that a host connects to one port on the switch and a standard switch has generally around 24 ports. Therefore one switch can theoretically connect only 24 users to the network (perhaps 23 if one of those ports are used to connect to the router). My problem is that is some buildings I have over 400 users (Ive added a small percentage to allow for growth of the company). Does this mean that I need one switch to connect to the router and then another switch on each of the 24 ports to have enough ports to connect this many users? If this or something similar is true how is redundancy built in because if the switch that connects to the router goes down all the users in that building lose their connection. This seems a very expensive solution and probably quite an ugly one. If anybody could guide me through a solution it would be very much appreciated. I have spent a long time reading articles and such on the internet but nowhere seems to go though this so if you know of a resource that walks you through design a medium/large network that would be great. Many thanks in advance Reply 1 Hi Darren, To answer a couple of your points, you can get access switches with 48 ports (Cisco 2960 or 3560 for example). Hope that gives you some pointers. Pete Reply 2 Hi Darren, To have redundancy in network you should have redundant pair of devices in your network to support redundancy and to support 400 users you can have chassis based switches with ethernet modules to support more number of users. with you setup redundancy will be the main question as one router and local lan so the switch which is connected to router goes down then network outage. The better way is to have dual router and dual switch in bundling mode and connect a cris cross cable between router and switch to have full redundancy in your network.In this fashion you can achive full redundancy and no network outage if any one of the device goes down. Hope that helps out your query !! Regards Ganesh.H Reply 3 Hello Darren, IMHO the design is mainly dependent on how the connectivity and the requirements per floor( if any). If there is a per floor cabinet then may be you can use C3750 stack for access layer solution per floor.To increase any capacity needs you just keep adding to the stacks. Then if there is fiber wiring between floors available you can chose to interconnect access layer and distribution using that. Say one closet/cabinet on any floor as the collapsed distribution model, the choice is vast here c3750/4500/6503. The access layer c3750 do come with 48 ports and 4 SFP based uplink ports. so you can use the sfp based uplink ports to connected these back to your collapsed distribution layer, which becomes your default gateway and may be the STP root port too. Now for redundancy, IMHO the access layer needs to be dual connected to a redundant gateway model (each acccess stack connected to both gateways) as Ganesh suggested earlier. You can either use HSRP/VRRP to provide L3 gateway redundancy. You can also use etherchannel for uplinks to provide more redundancy. Of course if one switch fails in the stack then we loose those ports, but still the other switches on the stack will work. this is just my thoughts on you requirements. Hope that helps. Deesh Related posts:
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| Cisco Powers Through the Recession | Apple Iphone and Tech News Posted: 18 Jan 2010 06:04 AM PST Flanked by a coterie of gadgets in a private suite at the USA's biggest consumer electronics show, Cisco Systems CEO … See the original post here: |
| SUPREME[ZZ]: Cisco Unity v4.3 Platform IBM DSK Kit Posted: 18 Jan 2010 05:56 AM PST Cisco Unity is the official unified messaging solution for the Cisco Architecture for Voice, Video, and Integrated Data (AVVID) and complements the full range of Cisco IP-based voice solutions, including Cisco CallManager and Cisco … Original post: |
| TipAdept Dot Com » Cisco Powers Through the Recession Posted: 18 Jan 2010 03:04 AM PST A buoyant Cisco is even planning a new hardware-software platform — the Cisco Unified Computing System — in pursuit of the multibillion-dollar business for equipping thousands of data centers run by corporations. More here: |
| CiscoPress – Deploying Cisco Wide Area Application Services | Free … Posted: 17 Jan 2010 09:25 PM PST Deploying Cisco Wide Area Application Services is the first comprehensive guide to designing and deploying solutions with these Cisco technologies. Excerpt from: |
| Cornerstone buys Cisco buildings – North San Francisco Bay Area … Posted: 18 Jan 2010 03:30 AM PST Cornerstone Properties beat out about a dozen other interested parties to purchase the five vacant Cisco buildings, according to Cornerstone acquisitions specialist Alon Adani. Specific details of the cash deal weren't disclosed, … More: |
| Cisco ASA 5510 Firewall : Basic Configuration Tutorial … Posted: 18 Jan 2010 03:03 AM PST Continuing our series of articles about Cisco ASA 5500 firewalls, I'm offering you. View post: |
| Cisco certification>>huaer » Blog Archive » Exambible COG-122 exam … Posted: 18 Jan 2010 02:24 AM PST Cisco certification> > huaer. Just another gabrielslife.org weblog. « Exambible Cisco 640-802 exam bootcamp · Exambible COG-122 exam questions. Read more: |
| CISCO Site to Site VPN | Projects for Freelancers Posted: 18 Jan 2010 12:49 AM PST Please, post bids for new project: CISCO Site to Site VPN. Read the rest here: |
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