Defining Requirements and Roles
Assuming you have decided that building your own Data Center is the right business decision, then the first step in a successful Data Center project is defining the room's purpose. Why is your company building this Data Center? What needs must it meet? What specific functions does it need to perform, and perform well, to be considered a success? What level of availability does your business require? These are obvious questions, but in the rush to get your complex, potentially..
Configuring the Default Metric for OSPF, IS-IS, RIP, or BGP
It is possible to redistribute the routing protocol and then, with a separate command, to state the default metric. There is no advantage to handling metric assignment within the redistribute command or separately. IS-IS cannot define a default metric. The metric must be stated when redistributing. If no metric is stated, the default (0 cost) is entered and the route discarded. To configure the default metric for OSPF, RIP, or BGP, use the following command syntax: Ro..
The Cisco SAFE Blueprint document (available at http://www.cisco.com/go/safe) suggests a wide variety of best practices for switch security. In most cases, the recommendations depend on one of three general characterizations of the switch ports, as follows: ■ Unused ports—Switch ports that are not yet connected to any device—for example, switch ports that are pre-cabled to a faceplate in an empty cubicle ■ User ports—Ports cabled to end-user devices, or any cablin..
WAN Edge Classification and Provisioning Models
One of the most common questions raised when planning a QoS deployment over the WAN is "How many classes of traffic should be provisioned for?" The following considerations should be kept in mind when arriving at an appropriate traffic class model for a given enterprise. Slow/Medium Link-Speed QoS Class Models Slow-speed ( 768 kbps) links have very little bandwidth to carve up, to begin with. When the serialization implications of sending Interactive-Video into the LL..
Using DLSw to Bridge Between Ethernet and Token Ring
DLSw includes the capability to bridge different kinds of media. One common example of this is bridging an Ethernet segment to a Token Ring. dlsw-ether-branch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. dlsw-ether-branch(config)#interface Loopback0 dlsw-ether-branch(config-if)#ip address 10.1.3.5 255.255.255.252 dlsw-ether-branch(config-if)#exit dlsw-ether-branch(config)#access-list 200 permit 0x0000 0x0D0D dlsw-ether-branch(config)#..
