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Cisco: Prioritize Voice traffic with LLQ

Cisco: Prioritize Voice traffic with LLQ

In one of my previous posts I was explaining how to mark packets closer to network edge. Starting from that point, we are sure the packets are market with the correct value, so on the router device we can directly match those packets and prioritize using Low Latency Queueing. I believe you already...
Filed in: Cisco-QoS
Cisco: Mark voice packets at the network edge

Cisco: Mark voice packets at the network edge

You know how Cisco always advise to mark the packet as close to the your network edge as you can? Even more you can find a lot of example where Cisco show how to trust the packets directly on the access switch, but not all the time you can do this. First because not everybody has devices that mark correct...
Filed in: Cisco-QoS
Cisco AutoQoS VoIP

Cisco AutoQoS VoIP

QoS – one of the most interesting and challenging part of the network engineer’s life. I think I’m not wrong when I’m saying that most engineers that hear the word QoS, react somehow like “ah, that ugly stuff…” I have to be honest and say that QoS is not one...
Filed in: Cisco-QoS
Cisco: How to shape traffic on Frame-Relay connection

Cisco: How to shape traffic on Frame-Relay connection

In some previous article, I explained how to configure a Frame-Relay Hub and Spoke network environment. Based on that example, I will show you today how you can implement traffic shaping over the Frame-Relay Hub and Spoke.You can have a look at the topology that we will use here. A note from the beginning....
Filed in: Cisco-QoS
Cisco: How to use kron to automate tasks

Cisco: How to use kron to automate tasks

Now and then everybody in IT network industry has to stay awake over the night to accomplish some tasks that cannot be performed during the work hours because will disturb regular activity. Some of this task usually need your presence in field (virtually or in place), to assure that everything is working...
Filed in: Cisco-services
Cisco: How-to get notifications for IP SLA monitor using EEM

Cisco: How-to get notifications for IP SLA monitor using EEM

In some previous post, I explained how to configure a basic IP SLA monitor for checking the round-trip time between two Cisco routers. Because in the comments of that post I have been asked how you can get e-mail notification for IP SLA monitor, I have decided to write another post to extend a little...
Filed in: Cisco-services
Cisco: How to configure simple IP SLA monitor

Cisco: How to configure simple IP SLA monitor

Before we begin let’s see what is this SLA term, for those of us who are not very familiar with the Service Provider terms. IP Service Level Agreements (SLAs) enable customers to assure new business-critical IP applications, as well as IP services that utilize data, voice, and video, in an IP network....
Cisco: Very simple NTP configuration

Cisco: Very simple NTP configuration

NTP (Network Time Protocol) is usually very simple to configure on Cisco devices. Of course you can reach complex configuration, but since I work in this field I didn’t saw somebody to push the things to extreme in NTP configuration. NTP is based on server – client relation. It is recommended...
Filed in: Cisco-services
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