Interconnection networks 2, clusters
... – Source-based routing: message specifies path to the destination (changes of direction) – Virtual circuit: circuit established from source to destination, message picks the circuit to follow – Destination-based routing: message specifies destination, switch must pick the path: deterministic vs. non ...
... – Source-based routing: message specifies path to the destination (changes of direction) – Virtual circuit: circuit established from source to destination, message picks the circuit to follow – Destination-based routing: message specifies destination, switch must pick the path: deterministic vs. non ...
Chapter 2 (cont..)
... • Since HTTP stateless, cookies can provide context for HTTP interaction • Set cookie header line in reply message from server + unique ID number for client • If client accepts cookie, cookie added to client’s cookie file (must include expiration date) • Henceforth client requests include ID • Serve ...
... • Since HTTP stateless, cookies can provide context for HTTP interaction • Set cookie header line in reply message from server + unique ID number for client • If client accepts cookie, cookie added to client’s cookie file (must include expiration date) • Henceforth client requests include ID • Serve ...
COS
461:
Computer
Networks
Midterm
Review Spring
2011
... • Provider independent (from IANA) • Provider allocated (from upstream ISP) • Provider allocated addresses seem to offer more potenQal for aggregaQon (and reducing rouQng table size), but not always so… ...
... • Provider independent (from IANA) • Provider allocated (from upstream ISP) • Provider allocated addresses seem to offer more potenQal for aggregaQon (and reducing rouQng table size), but not always so… ...
ppt
... • Ethernet switch is a special case of a bridge: each bridge port is connected to a single host. • Can make the link full duplex (really simple protocol!) • Simplifies the protocol and hardware used (only two stations on the link) – no longer full CSMA/CD • Can have different port speeds on the same ...
... • Ethernet switch is a special case of a bridge: each bridge port is connected to a single host. • Can make the link full duplex (really simple protocol!) • Simplifies the protocol and hardware used (only two stations on the link) – no longer full CSMA/CD • Can have different port speeds on the same ...
File - Itassignments
... this field is alI Os because the sender does not know the physical address of the target. Target protocol address: This is a variable-length field defining the logical (for example, IP) address of the target. For the IPv4 protocol, this field is 4 bytes long. ...
... this field is alI Os because the sender does not know the physical address of the target. Target protocol address: This is a variable-length field defining the logical (for example, IP) address of the target. For the IPv4 protocol, this field is 4 bytes long. ...
Routing
... IPv6 addresses is 2^128 or 10^38. A new notation is used, i.e., an address is written as eight groups of four hexadecimal numbers, with colons between the groups, like this: 8000:0000:0000:0000:0123:4567:89AB:CDEF • Since many zeros can appear in an address, three optimizations are made – Leading ze ...
... IPv6 addresses is 2^128 or 10^38. A new notation is used, i.e., an address is written as eight groups of four hexadecimal numbers, with colons between the groups, like this: 8000:0000:0000:0000:0123:4567:89AB:CDEF • Since many zeros can appear in an address, three optimizations are made – Leading ze ...
PDF - This Chapter
... Local Management Interface. A set of enhancements to the basic Frame Relay specification. LMI includes support for a keepalive mechanism, which verifies that data is flowing; a multicast mechanism, which provides the network server with its local DLCI and the multicast DLCI; global addressing, which ...
... Local Management Interface. A set of enhancements to the basic Frame Relay specification. LMI includes support for a keepalive mechanism, which verifies that data is flowing; a multicast mechanism, which provides the network server with its local DLCI and the multicast DLCI; global addressing, which ...
ppt
... • Provider allocated addresses seem to offer more potential for aggregation (and reducing routing table size), but not always so… – Multi-homing a PA address – Traffic engineering between multiple links to ...
... • Provider allocated addresses seem to offer more potential for aggregation (and reducing routing table size), but not always so… – Multi-homing a PA address – Traffic engineering between multiple links to ...
ppt
... Systems are also available that can map an arbitrary input (doesn’t have to be SONET or OTN based) onto an optical wave. ...
... Systems are also available that can map an arbitrary input (doesn’t have to be SONET or OTN based) onto an optical wave. ...
Lecture 1
... • Bit 0 is reserved and not used • Bit 1: DF – Don’t Fragment when set to 1 – What if fragmentation is needed? A router will send back an ICMP unreachable – need to fragment packet to the source with the size of the maximum MTU ...
... • Bit 0 is reserved and not used • Bit 1: DF – Don’t Fragment when set to 1 – What if fragmentation is needed? A router will send back an ICMP unreachable – need to fragment packet to the source with the size of the maximum MTU ...
Deployed and Emerging Security Systems for the Internet
... What’s a “different” protocol • Reasonable definition: If has a different Ethertype • New version: share the same Ethertype • If you ever make the format incompatible, change the version number • Which means you can’t just specify what you set the field to, but that you should drop something with a ...
... What’s a “different” protocol • Reasonable definition: If has a different Ethertype • New version: share the same Ethertype • If you ever make the format incompatible, change the version number • Which means you can’t just specify what you set the field to, but that you should drop something with a ...
Firewalls - Eastern Michigan University
... Network Address Translation (NAT) Spoofs the IP addresses of outgoing packets ...
... Network Address Translation (NAT) Spoofs the IP addresses of outgoing packets ...
COS 461: Computer Networks Spring 2009 (MW 1:30‐2:50 in CS 105) Mike Freedman Teaching Assistants: WyaI Lloyd and Jeff Terrace
... What if the Data Doesn’t Fit? Problem: Packet size • On Ethernet, max IP packet is 1500 bytes • Typical Web page is 10 kbytes ...
... What if the Data Doesn’t Fit? Problem: Packet size • On Ethernet, max IP packet is 1500 bytes • Typical Web page is 10 kbytes ...
for Semester 1 Chapter 6
... on the data in the frame. This FCS is then added to the end of the frame that is being sent. When the destination node receives the frame the FCS number is recalculated and compared with the FCS number included in the frame. If the two numbers are different, an error is assumed, the frame is discard ...
... on the data in the frame. This FCS is then added to the end of the frame that is being sent. When the destination node receives the frame the FCS number is recalculated and compared with the FCS number included in the frame. If the two numbers are different, an error is assumed, the frame is discard ...
TCP/IP Protocol Architecture - Department of Electrical Engineering
... IP addresses of source and destination Each host on a sub-network must have a unique global internet address; this allows the data to be ...
... IP addresses of source and destination Each host on a sub-network must have a unique global internet address; this allows the data to be ...
07-IPheader
... passes from source to destination and finally is validated by the destination host as well. • Is the computed checksum does not agree with the one found in the datagram, the datagram is discarded silently. • The IP checksum is examined and recomputed for each hop on the way from source to destinatio ...
... passes from source to destination and finally is validated by the destination host as well. • Is the computed checksum does not agree with the one found in the datagram, the datagram is discarded silently. • The IP checksum is examined and recomputed for each hop on the way from source to destinatio ...
ppt
... • TCP adds value to IP by adding retransmission, in-order delivery, data checksums, etc., so that programmers don’t have to re-implement the wheel every time. It also helps figure out how fast to send data. This is why TCP sockets can “block” from the app perspective. • The e2e argument suggests tha ...
... • TCP adds value to IP by adding retransmission, in-order delivery, data checksums, etc., so that programmers don’t have to re-implement the wheel every time. It also helps figure out how fast to send data. This is why TCP sockets can “block” from the app perspective. • The e2e argument suggests tha ...
Slide 1 - Department of Electrical Engineering & Computer Science
... Port (or SAP) numbers of processes at source and destination Each process with a host must have an address that is unique within the host; this allows the hostto-host protocol (e.g., TCP) to deliver data to the proper process. IP addresses of source and destination Each host on a sub-network must ha ...
... Port (or SAP) numbers of processes at source and destination Each process with a host must have an address that is unique within the host; this allows the hostto-host protocol (e.g., TCP) to deliver data to the proper process. IP addresses of source and destination Each host on a sub-network must ha ...
Product Presentation - Orion Telecom Networks Inc., Voice
... Extending Ethernet networks utilizing TDM (E1) landline based telecom infrastructure Using telecom network of E1s/PDH/SDH microwave etc. carrying E1s to transport Ethernet data ...
... Extending Ethernet networks utilizing TDM (E1) landline based telecom infrastructure Using telecom network of E1s/PDH/SDH microwave etc. carrying E1s to transport Ethernet data ...
ConnectX®-3 Pro VPI Adapters for Open Compute
... Virtualized Overlay Networks – Infrastructure as a Service (IaaS) cloud demands that data centers host and serve multiple tenants, each with its own isolated network domain over a shared network infrastructure. To achieve maximum efficiency, data center operators create overlay networks that carry t ...
... Virtualized Overlay Networks – Infrastructure as a Service (IaaS) cloud demands that data centers host and serve multiple tenants, each with its own isolated network domain over a shared network infrastructure. To achieve maximum efficiency, data center operators create overlay networks that carry t ...
1 In addition to assigning addresses from predefined pools, which
... Most WANS use only one technology throughout the infrastructure such as ISDN, Frame Relay or ATM. Data transfer speeds on the WAN are typically faster than the speeds on a LAN. WANs operate at the lower three layers of the OSI model. WANs are unable to support the transfer of voice or video traffic. ...
... Most WANS use only one technology throughout the infrastructure such as ISDN, Frame Relay or ATM. Data transfer speeds on the WAN are typically faster than the speeds on a LAN. WANs operate at the lower three layers of the OSI model. WANs are unable to support the transfer of voice or video traffic. ...
投影片 1
... The switching mechanism is implemented on IXP1200. Porting the switching mechanism to IXP2400. Future work: Parsing header, transcoding ...
... The switching mechanism is implemented on IXP1200. Porting the switching mechanism to IXP2400. Future work: Parsing header, transcoding ...
3. Ethernet - Faculty of Computer Science and Information Technology
... Source device attaches a header with destination MAC address. As this data propagates along the network media, the NIC in each device on the network checks to see if the MAC address matches the physical destination address carried by the data frame. When the data reaches the destination node, the NI ...
... Source device attaches a header with destination MAC address. As this data propagates along the network media, the NIC in each device on the network checks to see if the MAC address matches the physical destination address carried by the data frame. When the data reaches the destination node, the NI ...
CompactLogix™ 5370 L2 Programmable Automation
... Dual Ethernet Port – 10/100 Mbps – Ethernet switch that supports Device Level Ring (DLR) • Allows user to connect the Ethernet network in a ring topology • Resiliency from loss of one network connection allows to replace devices/drives one at a time without stopping production – similar to star topo ...
... Dual Ethernet Port – 10/100 Mbps – Ethernet switch that supports Device Level Ring (DLR) • Allows user to connect the Ethernet network in a ring topology • Resiliency from loss of one network connection allows to replace devices/drives one at a time without stopping production – similar to star topo ...