Here's another set of notes from my ONT studies.
Posts Tagged ‘ ccnp ’
ONT Notes – Queuing
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...
ONT Notes – Classification, Marking, and NBAR
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...
ONT Notes – Intro to QoS
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...
ONT Notes – VOIP Networks
Here are some of the notes I’ve been taking while reading over the ONT book. I hope it benefits somebody. Feel free to correct any stupid mistakes as a paraphrase to avoid a lawsuit. There’s way too much info here. I’ll refine the process a little better for the next topics. Benefits of Packet...
ISCW Down, Three To Go
I took and passed the ISCW test today. I was super-nervous going into it, which is weird for me, but I finally calmed down after the first few questions. Here’s my take. I don’t want to get into any trouble so I’m not going to include very much detail. The testing center wasn’t very...
ISCW Notes – Role-based Views
I’m at training for the ISCW test this week, and this topic came up yesterday. Since it came up last week at the office, I figure it was a sign from $deity that it was time for a blog entry. An admin in another business unit was trying to set up command access for...
BCMSN Notes – EtherChannel Distribution
EtherChannel lets you aggregate links into one logical connection, but the distribution of traffic is not uniform. It does not use per-packet load-balancing or the like to determine what interface in the bundle to use. Instead, it uses a XOR function on packet information to generate a hash that is used to determine what...
The Cisco Network Hierarchical Model
I got my CCNP certification library the other day to finally get myself another cert, so I’ve been doing some reading of late. The thing I hate about certs is that, even if you have all the experience in the world, there’s always a whole mess of academic stuff that no one really knows...
Recent Comments