2016 Bond Issue Improvements Overview
This presentation provides a detailed overview of the 2016 bond issue improvements needed for various educational facilities. It includes information on required upgrades, construction details, and financial allocations for different schools.
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Hands-on Workshop on Open vSwitch and Software-defined Networking Ali AlSabeh, Jorge Crichigno University of South Carolina http://ce.sc.edu/cyberinfra aalsabeh@email.sc.edu, jcrichigno@cec.sc.edu WASTC 2021 virtual Faculty Development Weeks (vFDW) June 23, 2021 1
The Needs for VPLS Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) is an IP-centric service; no other Layer 3 traffic can be carried Other services, such as Any Transport over MPLS (AToM) can carry all Layer 3 protocols, but it is point-to-point Customer wants to connect his/her Ethernet segments from different sites across an MPLS backbone from a service provider Ethernet over MPLS (EoMPLS) transport Ethernet frames across the MPLS backbone, but it is point- to-point L. De Ghein, MPLS Fundamentals , Cisco Press, CCIE No. 1897, 2016. 3
VPLS Architecture A VPLS emulates a Local Area Network (LAN) and provides Layer 2 functionalities by acting as an emulated Ethernet switch within a Wide Area Network (WAN) An Ethernet switch can: Forward of Ethernet frames Replicate and forward broadcast and multicast frames Forward of unicast frames with an unknown destination MAC address Prevent loops, etc. L. De Ghein, MPLS Fundamentals , Cisco Press, CCIE No. 1897, 2016. 4
VPLS Architecture Customer site 1 Customer site 2 VPLS CE PE 1 PE 2 CE Pseudowires Customer site 2 Customer site 1 Emulated Ethernet switch CE CE 5
VPLS in SDN VPLS is implemented as an ONOS application It provides multi-point broadcast Layer 2 circuits between multiple endpoints in an OpenFlow network To establish VPLS connectivity between two or more end-hosts, they must fulfill the following conditions: At least one VPLS must be defined At least the interfaces of two end-host must be configured At least two interfaces must be associated with the same VPLS 6
Lab 9: Configuring Virtual Private LAN Service (VPLS) Topology consists of four end-hosts, two OpenFlow switches, and a controller c0 Customer 1 site 1 Customer 1 site 2 h1-eth0 h3-eth0 .1 .3 h1 h3 s1-eth1 s2-eth1 s1-eth3 s2-eth3 s1-eth2 s2-eth2 10.0.0.0/8 s1 s2 h4-eth0 h2-eth0 VPLS 1 VPLS 2 .2 .4 h2 h4 Customer 2 site 1 Customer 2 site 2 8
Lab 9: Configuring Virtual Private LAN Service (VPLS) Two remote customers have two remote sites c0 Customer 1 site 1 Customer 1 site 2 h1-eth0 h3-eth0 .1 .3 h1 h3 s1-eth1 s2-eth1 s1-eth3 s2-eth3 s1-eth2 s2-eth2 10.0.0.0/8 s1 s2 h4-eth0 h2-eth0 VPLS 1 VPLS 2 .2 .4 h2 h4 Customer 2 site 1 Customer 2 site 2 9
Lab 9: Configuring Virtual Private LAN Service (VPLS) Two remote customers have two remote sites VPLS 1 c0 Customer 1 site 1 Customer 1 site 2 h1-eth0 h3-eth0 .1 .3 h1 h3 s1-eth1 s2-eth1 s1-eth3 s2-eth3 s1-eth2 s2-eth2 10.0.0.0/8 s1 s2 h4-eth0 h2-eth0 VPLS 1 VPLS 2 .2 .4 h2 h4 Customer 2 site 1 Customer 2 site 2 VPLS 2 10
