router
... framing, multiple link access: encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source and destination • different from IP address! • Q: why two addresses for the same interface? ...
... framing, multiple link access: encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source and destination • different from IP address! • Q: why two addresses for the same interface? ...
Link Layer
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) traditional Ethernet upstream HFC 802.11 wireless LAN ...
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) traditional Ethernet upstream HFC 802.11 wireless LAN ...
HP WX5000 Access Controller Series
... Secure Shell (SSHv2): encrypts all transmitted data for secure, remote CLI access over IP networks Media access control (MAC) authentication: provides simple authentication based on a user's MAC address; supports local or RADIUS-based authentication Secure user isolation: virtual AP services enable ...
... Secure Shell (SSHv2): encrypts all transmitted data for secure, remote CLI access over IP networks Media access control (MAC) authentication: provides simple authentication based on a user's MAC address; supports local or RADIUS-based authentication Secure user isolation: virtual AP services enable ...
Lecture note 7
... – Although the absolute control delay (a connection’s RTT) may remain about the same regardless of the link bandwidth (either 10, 100, or 1000 Mbps), the cost of the control delay becomes higher on higher-bandwidth network. – Why? During the same RTT, a larger amount of data has been injected into t ...
... – Although the absolute control delay (a connection’s RTT) may remain about the same regardless of the link bandwidth (either 10, 100, or 1000 Mbps), the cost of the control delay becomes higher on higher-bandwidth network. – Why? During the same RTT, a larger amount of data has been injected into t ...
Investigating Network Performance – A Case Study
... • iperf TCP JBO Mk5 to Man. rtt ~1ms 4420 byte packets get 960 Mpbs shows 94.7% kernel usage and 1.5% idle • iperf TCP JBO Mk5 to JIVE rtt ~15ms 4420 byte packets get 777 Mpbs shows 96.3% kernel usage and 0.06% idle – no cpu left! • Likelihood is that Onsala Mk 5 marginally faster cpu – at critical ...
... • iperf TCP JBO Mk5 to Man. rtt ~1ms 4420 byte packets get 960 Mpbs shows 94.7% kernel usage and 1.5% idle • iperf TCP JBO Mk5 to JIVE rtt ~15ms 4420 byte packets get 777 Mpbs shows 96.3% kernel usage and 0.06% idle – no cpu left! • Likelihood is that Onsala Mk 5 marginally faster cpu – at critical ...
Recitation_ECN
... The not-ECT code point indicates that the transport protocol will ignore the CE code point. This is the default value for the ECN code point. The ECT code points indicate that the transport protocol is willing and able to participate in ECN. The router sets the CE code point to indicate congestion t ...
... The not-ECT code point indicates that the transport protocol will ignore the CE code point. This is the default value for the ECN code point. The ECT code points indicate that the transport protocol is willing and able to participate in ECN. The router sets the CE code point to indicate congestion t ...
TCP/IP
... • For TCP/IP , the transmitted frame size is determined by the Maximum Transfer Unit (MTU) set in the driver software for the LAN interface . • It is possible on most TCP/IP implementations to modify the MTU to match the number of data octets carried by the Link Layer protocol . Setting the MTU’s of ...
... • For TCP/IP , the transmitted frame size is determined by the Maximum Transfer Unit (MTU) set in the driver software for the LAN interface . • It is possible on most TCP/IP implementations to modify the MTU to match the number of data octets carried by the Link Layer protocol . Setting the MTU’s of ...
Alcatel-Lucent OmniSwitch 6900
... changed across the data center. Combined with very large MAC table the OmniSwitch 6900 provides support for virtualized data centers. ...
... changed across the data center. Combined with very large MAC table the OmniSwitch 6900 provides support for virtualized data centers. ...
Beware of the Hidden! How Cross-traffic Affects
... Abstract—Real-time Ethernet is expected to become the core technology of future in-car communication networks. Following its current adoption in subsystems for info- and entertainment, broadband Ethernet promises new features in the core of upcoming car series. Its full potential will enfold when de ...
... Abstract—Real-time Ethernet is expected to become the core technology of future in-car communication networks. Following its current adoption in subsystems for info- and entertainment, broadband Ethernet promises new features in the core of upcoming car series. Its full potential will enfold when de ...
4 Measuring Network Delay
... connections are intact. Ping operates using the required Internet Control Message Protocol (ICMP) Echo function, documented in RFC 792 that all hosts should implement. ICMP are special IP control messages, that are used to send network information between two hosts, and will be described in details ...
... connections are intact. Ping operates using the required Internet Control Message Protocol (ICMP) Echo function, documented in RFC 792 that all hosts should implement. ICMP are special IP control messages, that are used to send network information between two hosts, and will be described in details ...
Introduction to Routing and Packet Forwarding
... so that router can examine the destination IP address. – If destination IP address is in routing table or there is a static route then Router determines next hop IP address. Router will re-encapsulate packet with appropriate layer 2 frame and send it out to next destination. – Process continues unti ...
... so that router can examine the destination IP address. – If destination IP address is in routing table or there is a static route then Router determines next hop IP address. Router will re-encapsulate packet with appropriate layer 2 frame and send it out to next destination. – Process continues unti ...
Link Layer
... Addresses: 6 bytes each (12 bytes in total) if adapter receives frame with matching destination address, or with broadcast address (eg ARP packet), it passes data in frame to net-layer protocol otherwise, adapter discards frame ...
... Addresses: 6 bytes each (12 bytes in total) if adapter receives frame with matching destination address, or with broadcast address (eg ARP packet), it passes data in frame to net-layer protocol otherwise, adapter discards frame ...
Ch. 8 TCP/IP Suite Error and Control Messages (ICMP)
... – The interface on which the packet comes into the router is the same interface on which the packet gets routed out. – The subnet/network of the source IP address is the same subnet/network of the next-hop IP address of the routed packet. – The datagram is not source-routed. – The route for the redi ...
... – The interface on which the packet comes into the router is the same interface on which the packet gets routed out. – The subnet/network of the source IP address is the same subnet/network of the next-hop IP address of the routed packet. – The datagram is not source-routed. – The route for the redi ...
802.1X
... The core protocol contains four messages: Access-Request (NASAS) Access-Challenge (NASAS) Access-Accept (ASNAS) Access-Reject (ASNAS) ...
... The core protocol contains four messages: Access-Request (NASAS) Access-Challenge (NASAS) Access-Accept (ASNAS) Access-Reject (ASNAS) ...
EX4300 Ethernet Switch
... EX4300 integrates with QFX3500, QFX3600 and QFX5100 10GbE and 40GbE data center access switches in a single stack or a Virtual Chassis configuration, enabling non-disruptive 10GbE server upgrades and simplified management of a mixed access environment. The EX4300 switches can be interconnected over ...
... EX4300 integrates with QFX3500, QFX3600 and QFX5100 10GbE and 40GbE data center access switches in a single stack or a Virtual Chassis configuration, enabling non-disruptive 10GbE server upgrades and simplified management of a mixed access environment. The EX4300 switches can be interconnected over ...
t 2
... Include a length field in the frame header(e.g. DECNET) length field(overhead) must have at least log2Kmax +1 bits where Kmax is maximum frame size Compared to 2.37similar overhead ...
... Include a length field in the frame header(e.g. DECNET) length field(overhead) must have at least log2Kmax +1 bits where Kmax is maximum frame size Compared to 2.37similar overhead ...
IP Addresses
... this is not commonplace in today’s networks because common link-layer protocols do not have retransmissions, but if they did, this could be another cause of duplicate packets; for example, 802.11 wireless link layer has retransmissions. © Jörg Liebeherr (modified by M. Veeraraghavan) ...
... this is not commonplace in today’s networks because common link-layer protocols do not have retransmissions, but if they did, this could be another cause of duplicate packets; for example, 802.11 wireless link layer has retransmissions. © Jörg Liebeherr (modified by M. Veeraraghavan) ...
Link Layer - Gordon College
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) Old-fashioned Ethernet 802.11 wireless LAN ...
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) Old-fashioned Ethernet 802.11 wireless LAN ...
router
... framing, link access: encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source, dest • different from IP address! ...
... framing, link access: encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source, dest • different from IP address! ...
Ch4. Network Layer and Routing
... Why does TCP/IP perform error checking at the both layers? IP options were dropped in the IPv6 header. ...
... Why does TCP/IP perform error checking at the both layers? IP options were dropped in the IPv6 header. ...
FS980M Datasheet
... EPSRingTM ۼۼEthernet Protection Switched Ring (EPSRing) allows several FS980M switches to join a protected ring, capable of recovery within as little as 50ms. This feature is perfect for high availability in enterprise networks. Layer 3 Routing ۼۼThe FS980M Series provides static IPv4 routing ...
... EPSRingTM ۼۼEthernet Protection Switched Ring (EPSRing) allows several FS980M switches to join a protected ring, capable of recovery within as little as 50ms. This feature is perfect for high availability in enterprise networks. Layer 3 Routing ۼۼThe FS980M Series provides static IPv4 routing ...
Link Layer
... EDC= Error Detection and Correction bits (redundancy) D = Data protected by error checking, may include header fields • Error detection not 100% reliable! • protocol may miss some errors, but rarely • larger EDC field yields better detection and correction ...
... EDC= Error Detection and Correction bits (redundancy) D = Data protected by error checking, may include header fields • Error detection not 100% reliable! • protocol may miss some errors, but rarely • larger EDC field yields better detection and correction ...
PPT - Computer Networking - A Top
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) traditional Ethernet upstream HFC 802.11 wireless LAN ...
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) traditional Ethernet upstream HFC 802.11 wireless LAN ...
ppt
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) traditional Ethernet Upstream satellite communication 802.11 wireless LAN ...
... PPP for dial-up access point-to-point link between Ethernet switch and host broadcast (shared wire or medium) traditional Ethernet Upstream satellite communication 802.11 wireless LAN ...