Posts Tagged ‘ qos ’

Stubby Post – Time-based ACLs and Policy-maps

April 28, 2010
By Aaron Conaway

Look. Time-based ACLs work in policy-maps.

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NBAR and HTTP Data Conversations

March 7, 2010
By Aaron Conaway
NBAR and HTTP Data Conversations

I’m still working on the ONT test and doing labs, so I marked up a lab for me to work.  I’m using the same setup as I did last time.  The two routers are 3640s running 12.4(25b). Part of the lab was to identify HTTP traffic coming into F0/0 and mark it as CS3. ...

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QoS Pre-classify and Class-map Order

March 6, 2010
By Aaron Conaway
QoS Pre-classify and Class-map Order

I’m still studying for the ONT test, so I did some labs tonight.  One of them was to demonstrate the qos pre-classify command for tunnel interfaces.  When you have a packet sent over a GRE tunnel, the ToS field gets copied to the GRE packet, but there’s no way to see the original packet’s...

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ONT Notes – QoS On Wireless Networks

February 10, 2010
By Aaron Conaway

Imagine that...another ONT notes post. This one is about QoS on wireless networks.

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ONT Notes – AutoQoS

February 10, 2010
By Aaron Conaway

Here are some more notes from my ONT studies. AutoQoS seems to be pretty straightforward.

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ONT Notes – Pre-classify and End-to-end QoS

February 3, 2010
By Aaron Conaway

Here are some more ONT notes. We study pre-classifying and end-to-end QoS this time.

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ONT Notes – Congestion Avoidance, Policing, Shaping, and Link Efficiency

February 2, 2010
By Aaron Conaway

Here's another set of notes from my ONT studies.

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ONT Notes – Queuing

January 23, 2010
By Aaron Conaway

Here are some more notes from my studies.  Of course, no one cares about them but me, but it’s my blog.  I’m sure someone will find it useful.  Please help to correct dumbass mistakes. Congestion Speed mismatch – traffic leaves a lower-bandwidth interface than the one it came in on Aggregation problem – lots...

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ONT Notes – Classification, Marking, and NBAR

January 22, 2010
By Aaron Conaway

Here’s another set of notes from my ONT studies.  I’m sure someone will find it useful.  Please help to correct dumbass mistakes. Classification is done with traffic desriptors Ingress interface CoS value on ISL or 802.1P frames Source/destination IP address IP Precedence or DSCP value MPLS EXP Application type Layer 3 QoS Type of...

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ONT Notes – Intro to QoS

January 20, 2010
By Aaron Conaway

I’ll try to keep it a little shorter this time. Major issues for converged enterprise networks Available bandwidth: competition among applications Fixes Increase bandwidth: More power! Properly queue based on classification and marking: QoS Compress: cRTP, TCP header compression, etc. Delay: Lead time to get a packet to the destination Types of delay Processing...

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