Cisco Supervisor
2010
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 Cisco VS S2T 10G Supervisor 2T with 2 ports 10GbE and MSFC5 PFC4 $10,495.00 Time Remaining: 11d 19h 42m Buy It Now for only: $10,495.00 |
 Cisco WS SUP720 Catalyst 6500 7600 Supervisor Engine 720 $113.50 (2 Bids) Time Remaining: 1d 9h 43m |
 GENUINE CISCO SUPERVISOR ENGINE WS X5530 E3 $39.99 Time Remaining: 26d 13h 2m Buy It Now for only: $39.99 |
 Cisco 4507R Switch 2 x 2800ACV Power Supply + WS X4515 Supervisor Engine IV $449.00 Time Remaining: 15d 16h 47m Buy It Now for only: $449.00 |
 CISCO SYSTEMS WS C5505 SERIES SUPERVISOR ENGINE $199.99 Time Remaining: 11d 18h 27m Buy It Now for only: $199.99 |
 Cisco 4006 Chassis with supervisor II engine with 3x $112.50 Time Remaining: 19d 17h 40m Buy It Now for only: $112.50 |
 CISCO 4006 Chassis with supervisor II engine ws x4148 rs $187.50 Time Remaining: 16d 17h 45m Buy It Now for only: $187.50 |
 CISCO 4506 Chassis + 1 x WS X4515 SUPERVISOR ENGINE IV + 3 x WS X4306 GB $739.80 Time Remaining: 27d 9h 43m Buy It Now for only: $739.80 |
 CISCO SUPERVISOR ENGINE 7 E CONTROL PROCESSOR PLUG IN MODULE WSX45SUP7E $9,457.59 Time Remaining: 26d 22h 12m Buy It Now for only: $9,457.59 |
 NEW Cisco WS X4516 10GE Supervisor Engine 2479 $3,975.00 Time Remaining: 15d 12h 26m Buy It Now for only: $3,975.00 |
 Cisco WS X6K S2U MSFC2 Catalyst 6500 Switch Supervisor $135.00 Time Remaining: 15d 10h 23m Buy It Now for only: $135.00 |
 Cisco WS X4516 10GE Supervisor Engine 2479 $2,096.00 Time Remaining: 4d 12h 37m Buy It Now for only: $2,096.00 |
 Cisco 4006 Chassis with Supervisor II Engine $74.25 Time Remaining: 19d 17h 47m Buy It Now for only: $74.25 |
 NEW F S Cisco VS S720 10G 3C SUP720 SUPERVISOR 720 10G $10,619.00 Time Remaining: 17d 15h 10m Buy It Now for only: $10,619.00 |
 Cisco WS X4013+10GE Supervisor Engine $1,409.00 Time Remaining: 4d 12h 37m Buy It Now for only: $1,409.00 |
 CISCO 4506 Chassis + 1 x WS X4515 SUPERVISOR ENGINE IV + 5 x WS X4548 GB RJ45V $4,932.00 Time Remaining: 27d 9h 38m Buy It Now for only: $4,932.00 |
 NEW Cisco 6500 VS S2T 10G Supervisor 2T with 2 ports 10GbE and MSFC5 PFC4 $12,400.00 Time Remaining: 10d 20h 22m Buy It Now for only: $12,400.00 |
 Cisco WS SUP720 3B Supervisor Engine 6500 6509 7600 $1,770.59 Time Remaining: 19d 9h 43m Buy It Now for only: $1,770.59 |
 Genuine Cisco N7K SUP1 Nexus 7000 Supervisor Includes External 8GB Log Flash $10,334.50 Time Remaining: 23d 15h 36m Buy It Now for only: $10,334.50 |
 Cisco WS SUP32 GE 3B Supervisor 32 Engine Catalyst 6500 1Month Warranty $739.80 Time Remaining: 5d 7h 46m Buy It Now for only: $739.80 |
 CISCO WS X5009 Catalyst 5000 Supervisor Engine TX 73 1414 $37.94 Time Remaining: 29d 7h 18m Buy It Now for only: $37.94 |
 Cisco WS SUP720 3B Cisco Supervisor Engine 720 with PFC $6,200.00 Time Remaining: 25d 18h 48m Buy It Now for only: $6,200.00 |
 CISCO WS X4012 Catalyst 4003 Supervisor I 20 ex VAT $37.94 Time Remaining: 13d 17h Buy It Now for only: $37.94 |
 CISCO WS SUP32 10GE 3B Supervisor Engine 6500 7600 $7,895.00 Time Remaining: 3d 35m Buy It Now for only: $7,895.00 |
 NEW Cisco 6500 Series VS S2T 10G XL Supervisor 2T 80G System XL VS SUP2T 10G $22,500.00 Time Remaining: 19d 20h 6m Buy It Now for only: $22,500.00 |
Cisco Supervisor
Improving Network Performance
Today's companies, particularly those involved with banking and Internet hosting, require their network to be available 99.999% of the time. When the network isn't available for employees, clients and business partners, the cost can be thousands of dollars per minute. Diversity or failover is a key component of any high availability strategy. It describes a backup device or link that is available should the primary device or link be unavailable.
Today's e-commerce web hosting facility are designed with diversity for circuits, routers, firewalls, links, modules and servers. Each number shown corresponds to a single point of failure that is provisioned with some backup or diverse connection. Each server is dual homed to different switches should a Layer 2 switch or server link fail. The Layer 2 switches are connected with a Gigabit trunk. As well the Layer 2 switches are connected to multilayer switches with Gigabit trunks. That allows for link or switch failure. There is module diversity at all campus switches with dual supervisor engines. If the primary supervisor engine fails, the secondary activates and traffic is diverted across trunk lines to the adjacent switch once the spanning tree algorithm is run and the trunk ports are in forwarding mode.
Firewall failover is provided with a link between them that will detect if one of those is unavailable. Traffic is then routed through the active firewall. The routers are connected with a link that will detect when one of the devices is unavailable (HSRP). There are separate telecom demarcations at this facility, which provide diverse local loop circuits to different central offices. There are dual WAN circuits to different Internet Service Providers from those central offices as well.
High availability designs must consider the failover time at each point in their network. If a network application will timeout after 10 seconds then any failover point must be 9 seconds or less. For instance, spanning tree protocol (STP) will run when there is a topology change such as a switch or link failure. Design your network such that the link speeds, spanning tree protocol version and switch topology do not add an excessive failover time.
1. Different Internet Service Providers
2. Central Office Diversity with Diverse Local Loop Circuits
3. Router Diversity with Hot Standby Router Protocol (HSRP)
4. Firewall Diversity
5. Switch to Firewall Link Failover with Gigabit Trunking
6. Switch and Link Diversity with Gigabit Trunking
7. Switch and Link Failover with Gigabit Trunking
8. Module Diversity with Dual Supervisor Engines
9. Dual Network Interface Cards at Servers and Clustering Software
Shaun Hummel is author of Network Planning and Design Guide available at amazon.com and CiscoDesignBooks.com featuring Networking Books, eBooks, Certifications, Articles and Design Tools.
About the Author
Shaun Hummel, CCNP, is a Senior Network Engineer with 11 years experience in enterprise network planning, design, and implementation. He has worked for various private and public companies in Canada and the United States improving infrastructure, security, and management. He has written Network Planning and Design Guide, Cisco Wireless Network Design Guide and Network Assessment Guide. http://www.ciscodesignbooks.com
How can I get a Job at Disney World, FL?...?
I have some years in the theme park industry, I started working Maintenence at a Six Flags park, in 1999. But that is just summer work. After that, I went into food service and made supervisor of the Food Warehouse. Also helped a lot with catering, and park stands. So I know every aspect of food service for that park. But it is seasonial. I went to school for computers, PC repair and Computer Networking systems(Cisco). Does anyone have any phone numbers, e-mail addresses of Disney? Thanks!! P.S. The cruse ship would be fine as well!
Check out :
http://www.disney.go.com/DisneyCareers/wdwcareers/
They should be able to answer all of your questions. If you are interested in working on Disney Cruise Lines however, you should check out:
http://www.dcljobs.com/
Otherwise, you can go to the Walt Disney World Resorts Casting Building across the street from Downtown Disney Marketplace.
Cisco Mobile Supervisor Video Data Sheet
