Modular QoS CLI
You can use MQC to define additional traffic classes and to configure QoS policies for the whole system and for individual interfaces. Configuring a QoS policy with MQC consists of the following steps:
Interface Commands (show interfaces – show interfaces vg-anylan)
Cisco NX-OS/IOS Interface Comparison
Differences between IOS and IOS XE
- IOS is monolithic, completely adherent to the hardware, and does not provide any kind of isolation between “processes”, neither from a CPU nor memory point of view.
- Virtual memory is shared by all IOS processes: nothing prevents buffer overflows.
- Scheduler is non-preemptive: if SNMP decides it should keep CPU busy, it can, and other processes (BGP…) will be prevented from running.
- You cannot upgrade IOS (or parts of it) without disruption unless you are running expensive dual-supervisor hardware.
Was reading through some documentation as noticed that the Nexus 5500 series has some unusual behaviours for Store and Forward. I made myself notes about the functional modes.
Corrupted frames are the devils spawn. A few noisy links causing frame corruption can quickly degrade network performance, and troubleshooting them is getting harder. These integrity errors generally occur when signal noise causes a binary ‘1’ to be mistaken for a binary ‘0’ or vice-versa. This post takes a look at integrity errors and the impacts of corrupted frames in a cut-through switched network. Throughout this post I’ll use the term ‘CRC errors’ term to refer to frame integrity errors which were detected by CRC comparison.
RIB Vs FIB
RIB (or routing table) and FIB (or forwarding table) are two different tables within an IP networking platform. They share common information but perform two distinctly different purposes. They also each have a different degree of resource capacity to perform their respective roles.