ModelNet
... Collapse each path into single pipe Latency = sum of latencies along path Reliability = product of link reliabilities along path Low per packet overhead Does not emulate link contention along path ...
... Collapse each path into single pipe Latency = sum of latencies along path Reliability = product of link reliabilities along path Low per packet overhead Does not emulate link contention along path ...
20060208-highspipv6-ricciulli
... new protocols, flow control algorithms, monitoring, etc..) – Discrete. Update network through separate management operations – Integrated. Packets cause network to update itself – Broad scope did not result in industry adoption – Lack of “killer application” – Lack of tight industry interaction – Tr ...
... new protocols, flow control algorithms, monitoring, etc..) – Discrete. Update network through separate management operations – Integrated. Packets cause network to update itself – Broad scope did not result in industry adoption – Lack of “killer application” – Lack of tight industry interaction – Tr ...
Screened-host firewall
... Packet headers have information in them such as the IP of sender and receiver and port numbers. Based on this, the router knows what kind of internet service e.g. Web based or ftp is being used to send the data. And using this information can prevent certain packets from being sent between the ...
... Packet headers have information in them such as the IP of sender and receiver and port numbers. Based on this, the router knows what kind of internet service e.g. Web based or ftp is being used to send the data. And using this information can prevent certain packets from being sent between the ...
single physical link
... channel: connect one process to another view the network as providing logical channels over which application-level processes can communicate with each other, each channel provides the set of services required by that application ...
... channel: connect one process to another view the network as providing logical channels over which application-level processes can communicate with each other, each channel provides the set of services required by that application ...
intro-Routing240
... break message into smaller chunks: “packets” Store-and-forward: switch waits until chunk has completely arrived, then forwards/routes Q: what if message was sent as single unit? ...
... break message into smaller chunks: “packets” Store-and-forward: switch waits until chunk has completely arrived, then forwards/routes Q: what if message was sent as single unit? ...
Protocol Stack
... • Document that provides information or defines standard • Requests feedback from the community • Can be “promoted” to standard under certain conditions • consensus in the committee ...
... • Document that provides information or defines standard • Requests feedback from the community • Can be “promoted” to standard under certain conditions • consensus in the committee ...
Supporting Differentiated Services in MPLS Networks
... simple and fast packet-forwarding capability. Label swapping is accomplished by associating fixed-length labels with routes and using the label value to forward packets, including the procedure of determining the value of any replacement label. Depending on the Layer 2 and Layer 3 technologies invol ...
... simple and fast packet-forwarding capability. Label swapping is accomplished by associating fixed-length labels with routes and using the label value to forward packets, including the procedure of determining the value of any replacement label. Depending on the Layer 2 and Layer 3 technologies invol ...
Network Layer
... Link State Routing Algorithm 1. Each router is responsible for meeting its neighbors and learning their names. 2. Each router constructs a link state packet (LSP) which consists of a list of names and cost for each of its neighbors. 3. The LSP is transmitted to all other routers. Each router stores ...
... Link State Routing Algorithm 1. Each router is responsible for meeting its neighbors and learning their names. 2. Each router constructs a link state packet (LSP) which consists of a list of names and cost for each of its neighbors. 3. The LSP is transmitted to all other routers. Each router stores ...
Media: Voice and Video in your SIP Environment
... – A large frame is fragmented into a series of packets for transmission over network – I-Frame fragmentation • Receiver must receive all fragments to properly reconstruct frame ...
... – A large frame is fragmented into a series of packets for transmission over network – I-Frame fragmentation • Receiver must receive all fragments to properly reconstruct frame ...
slides 2
... – Put header on front of packet: [ Destination | Packet ] – Everyone gets packet, discards if not the target – In Ethernet, this check is done in hardware • No OS interrupt if not for particular destination ...
... – Put header on front of packet: [ Destination | Packet ] – Everyone gets packet, discards if not the target – In Ethernet, this check is done in hardware • No OS interrupt if not for particular destination ...
ccna1-ch10
... •Packets follow the same path to destination. •Packets arrive in order •Connection oriented network processes are called circuit switched. ...
... •Packets follow the same path to destination. •Packets arrive in order •Connection oriented network processes are called circuit switched. ...
Towards meticulous data plane monitoring
... or the SDN controller. The current state-of-the art tools either check the network statically from the control plane or use tagging or active probe generation to check the data plane behaviour. There is a spectrum of control plane mechanisms [1], [2], [3], [4] which check for some or all of the netw ...
... or the SDN controller. The current state-of-the art tools either check the network statically from the control plane or use tagging or active probe generation to check the data plane behaviour. There is a spectrum of control plane mechanisms [1], [2], [3], [4] which check for some or all of the netw ...
Toward Millisecond IGP Convergence
... The usual way of dealing with this is to treat “bad news” differently from “good news” so routing is quick to find an alternate path on any failure but slow to switch back when the link comes up. The current IS–IS spec treats bad news and good news the same but it should be possible to change the sp ...
... The usual way of dealing with this is to treat “bad news” differently from “good news” so routing is quick to find an alternate path on any failure but slow to switch back when the link comes up. The current IS–IS spec treats bad news and good news the same but it should be possible to change the sp ...
intro-Routing240
... Delay in packet-switched networks Transmission delay: R=link bandwidth (bps) L=packet length (bits) time to send bits into link = L/R ...
... Delay in packet-switched networks Transmission delay: R=link bandwidth (bps) L=packet length (bits) time to send bits into link = L/R ...
Click Router
... • Click router configurations are modular and easy to extend. • Each extension simply adds a couple elements to the base IP configuration. – Other configurations reuse many of the IP router elements. • On conventional PC hardware, Click’s maximum lossfree forwarding rate for IP routing is 357,000 64 ...
... • Click router configurations are modular and easy to extend. • Each extension simply adds a couple elements to the base IP configuration. – Other configurations reuse many of the IP router elements. • On conventional PC hardware, Click’s maximum lossfree forwarding rate for IP routing is 357,000 64 ...
Document
... It is sometimes useful to make a distinction between routing, which is making the decision which router to use, and forwarding. One can think of a router as having two processes inside it. One of them handles each packet as it arrives, looking up the outgoing line to use for it in the routing tables ...
... It is sometimes useful to make a distinction between routing, which is making the decision which router to use, and forwarding. One can think of a router as having two processes inside it. One of them handles each packet as it arrives, looking up the outgoing line to use for it in the routing tables ...
Accompanying slides for Project 5
... Implementation hints There must be at most a single routing discovery process for any destination at any time Multiple threads should not trigger multiple routing discovery processes for the same destination Only one cache entry for each destination ...
... Implementation hints There must be at most a single routing discovery process for any destination at any time Multiple threads should not trigger multiple routing discovery processes for the same destination Only one cache entry for each destination ...
MAC Part I - UCLA Computer Science
... CSMA/CD can approach channel utilization =1 in LANs (low ratio of propagation over packet transmission time) Collision detection is easy in wired LANs (eg, E-net): can measure signal strength on the line, or code violations, or compare tx and receive signals Collision detection cannot be done in wir ...
... CSMA/CD can approach channel utilization =1 in LANs (low ratio of propagation over packet transmission time) Collision detection is easy in wired LANs (eg, E-net): can measure signal strength on the line, or code violations, or compare tx and receive signals Collision detection cannot be done in wir ...