Collocation is the act of placing one party's equipment on another party's premises. An example of collocation is putting the customer's router at the provider's site or hosting center, as illustrated in Figure 2-12. The customer motivations for such a collocation scheme would be to have the ISP provide faster access speeds or local monitoring of the equipment, or perhaps to give the customer better control of access bandwidth utilization. Figure 2-12. Collocation Example: Cu..
A number of steps must be taken to control access to routers within the network. The first step is to configure access control for each individual router, as follows: service nagle service password-encryption enable secret 5 3242352255 no enable password access-list 16 permit 10.0.1.0 0.0.0.255 banner login ^ This system is the property of ISPnet Networks. Access to this system is monitored. Unauthorized access is prohibited. Contact noc@ISP.net or call +1 555 5..
WAN Edge QoS Design Considerations
QoS policies required on WAN aggregators include queuing, shaping, selective dropping, and link-efficiency policies in the outbound direction of the WAN link. Traffic is assumed to be correctly classified and marked (at Layer 3) before WAN aggregator ingress. Remember, Layer 3 markings (preferably DSCP) are media independent and traverse the WAN media, whereas Layer 2 CoS is lost when the media switches from Ethernet to WAN media. Several factors must be kept in mind when de..
Token Ring switching offers many of the advantages found in switched Ethernet networks. Most notably, it offers more bandwidth by reducing the size of the Token Ring domain. In the extreme case, the smallest Token Ring domain is a dedicated workstation on a switch port. Catalyst Token Ring switching creates two virtual entities: the Token Ring Concentrator Relay Function (TrCRF) and the Token Ring Bridge Relay Function (TrBRF). Together, these functions form a switched Token ..
Configuring Adaptive Frame Relay Traffic Shaping for Interface Congestion
The Frame Relay Traffic Shaping feature must be enabled on the interface in order to use Adaptive Frame Relay Traffic Shaping for Interface Congestion. Refer to Chapter 5 for the configuration tasks required to enable Frame Relay Traffic Shaping. To configure Adaptive Frame Relay Traffic Shaping for Interface Congestion, perform the configuration steps listed below: Step 1. Enter the interface configuration mode of the serial interface and enable Frame Re..
