network audit checklist

Network audit checklist offer a variety of tunneling features, such as GRE, IPSec, and L2TP, which enable service providers to provide Layer 3 VPN tunnels by enveloping one IP packet within another. Such encapsulation masks the original header information to provide features such as privacy, encryption, and address preservation. Tunneling technologies also are used to carry non-IP protocols over an IP backbone.

VC bundling offers QoS by separating classes of traffic over individual PVCs. Therefore, it is important to remember that other QoS tools targeted at prioritizing different types of traffic on the same VC, such as LLQ, do not readily apply here. Also, PVC bundles do not offer bandwidth-sharing arrangements (such as Multilink Point-to-Point Protocol [MLP] and Frame Relay multilink bundling) because they dedicate a particular PVC to a given class of traffic. If that class does not use its bandwidth allocation, it cannot be reallocated to other types of traffic. If bandwidth-sharing features are required, Multilink PPP over ATM (MLPoATM) or Multilink PPP over Frame Relay (MLPoFR) bundles must be used in conjunction with network audit checklist