Chareon
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C.i.s.c.o. spells Cisco! 0 Comments
Another update from my brain, which seems to have been eaten by Cisco. Or had that already happened and this is just it really starting to show? Either way, a bad thing? I'm not really sure...
Anyways, I'm still fighting with QoS and trying to fully learn what I need to for the certification exam, because its a guarantee that your going to see about 10 points of QoS on it. 10% on an exam where 80% is a pass? Kinda important to make sure you know it.
Here's an example of the what I'm working on right now.
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Traffic arriving from Switch1 to Switch3 must be classified according to VLAN.
Vlan 1 = DSCP value AF11
Vlan 2,3,4 = DSCP value AF12
Vlan 30,31,32 = AF13
For VLANs 2,3,4,30,31,32 mark Telnet and SSH packets with DSCP AF11.
Configure ingress queue 2 to be used for traffic with DSCP AF11, 12 and 13. Packets with AF12 must begin being dropped when the queue is 60% full and packets with AF13 when the queue is 40% full.
Minimize disruption of other default queuing methods. Do not reassign queues.
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Thats just one part of QoS that I need to learn... Theres ALOT more, and not only do I have to learn how to do it all I need to learn how to know when to do it based on obscure requirements and phrasing. Yikes.
Note: If anybody knows of something they can recommend to read to learn about this stuff it would be greatly appreciated as I'm having just a bit of trouble wrapping my mind around this stuff.
Anyways, I'm still fighting with QoS and trying to fully learn what I need to for the certification exam, because its a guarantee that your going to see about 10 points of QoS on it. 10% on an exam where 80% is a pass? Kinda important to make sure you know it.
Here's an example of the what I'm working on right now.
-----------------
Traffic arriving from Switch1 to Switch3 must be classified according to VLAN.
Vlan 1 = DSCP value AF11
Vlan 2,3,4 = DSCP value AF12
Vlan 30,31,32 = AF13
For VLANs 2,3,4,30,31,32 mark Telnet and SSH packets with DSCP AF11.
Configure ingress queue 2 to be used for traffic with DSCP AF11, 12 and 13. Packets with AF12 must begin being dropped when the queue is 60% full and packets with AF13 when the queue is 40% full.
Minimize disruption of other default queuing methods. Do not reassign queues.
---------------
Thats just one part of QoS that I need to learn... Theres ALOT more, and not only do I have to learn how to do it all I need to learn how to know when to do it based on obscure requirements and phrasing. Yikes.
Note: If anybody knows of something they can recommend to read to learn about this stuff it would be greatly appreciated as I'm having just a bit of trouble wrapping my mind around this stuff.
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