Redundancy Issues and Multiple Route Reflectors in an AS

With the lack of a full BGP mesh inside the AS, redundancy and reliability become issues. If a route reflector fails, clients will be isolated. Redundancy requires the existence of multiple route reflectors in a cluster where clients can simultaneously peer with multiple routers. If one route reflec...

External Routing Information Propagation

Conventional packet forwarding within the core of an IP network requires that external routing information be advertised to all transit routing devices. This is necessary so that packets can be routed based on the destination address that is contained within the network layer header of the packet. T...

Using SNMP to Copy a New IOS Image

Before you can upload or download the router's IOS image to a TFTP server, you have to set up a valid read-write SNMP community string: Router#configure terminal Enter configuration commands, one per line.  End with CNTL/Z. Router(config)#snmp-server community ORARW rw Router(config)#end ...

Overview of the MQC

MQC is essentially a comprehensive framework for customers and users to deploy QoS policies on a network. MQC offers a modular and hierarchical approach that allows users to create policies to meet their QoS requirements. The basic MQC configuration encompasses the following three steps: Step 1. ...

Interworking Frame Relay with ATM

Frame Relay has became immensely popular because it is an efficient and simple protocol designed to transport data traffic effectively up to the data rates of T3/E3 without incurring the excessive overheads commonly present in WAN protocols such as X.25. The resultant popularity of Frame Relay servi...

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