Tag:   QoS

This post represents the solution and explanation for quiz-23. The quiz shows a scenario where the network engineer has to configure Low Latency Queuing (LLQ) for some traffic that will be encrypted into an IPsec tunnel. This article presents QoS Pre-Classify and other solutions to the problem...

Company ABC runs a static VTI-based VPN tunnel between Site-1, hosting 192.168.1.1, and Site-2, hosting 192.168.5.5. BGP is configured between the two sites, over the VTI Tunnel, making all traffic between the sites to be encrypted/protected by IPsec. The network engineer tries to configure QoS but something does not work !...

This post represents the solution and explanation for quiz-7. The junior network administrator tried to update the configuration on a switch by enabling mls qos and immediatelly created an outage. See what happened !

You have recently moved to a new company as a network administrator and you've started doing an audit of the existing network. Your network uses an end-to-end QOS approach between multiple offices. Access switches trust QOS markings received from IP Phones and higher layer devices trust the markings received from access switches, as seen in diagram below.