- Количество слайдов: 24
Background Info The state of the campus telecommunications infrastructure in December 2001
Status in December • Slow speed 10 MBS connection to the desktop in offices and labs • No connectivity in most classrooms • Telephone switch and campus network router in small room in underground tunnel • Data communications rooms shared with other functions, such as electrical equipment
Problems • No physical room to expand telephone switch or network router • Lack of controlled access to data and telephone equipment in shared rooms • No space in conduits to pull in more cable to add network and telephone connections • Performance/speed issues on some network segments • Out of network ports on hubs in many buildings
Luckily, a solution was on the horizon - a CSU system wide project to upgrade the campus data and telephone infrastructure
Telecommunications Infrastructure Project Bringing a 21 st Century Network Infrastructure to CSUDH
Project Overview • Two stage, multi-phase project – – Stage I – construction of Network Control Center, new data communications rooms, pathways, and cable system. – Stage II – installation of network management software, cable inventory system, and upgraded network electronics (switches).
Project Summary • Duration: Feb. 18, 2002 - June 17, 2003 – extended through December 2003 • Buildings were upgraded in phases, starting with the Student Health Center. • Division coordinators/building captains were main point of contact between building occupants and project team.
Project Scope • New Cat 5 e phone & data cable to all offices. • New CISCO switches for included buildings. • Gigabit ethernet on the backbone, 100 Mbps to the desktop and each classroom. • All classrooms have at least 2 data connections and a phone jack, and some will be set up for future wireless access to the network. • Note: all old cable will be removed!
Project Scope continued • Improved, dedicated communications rooms (IDFs, BDFs). • Campus telephone switch and network router relocated to new facility that provides extended UPS capabilities, fire suppression, and room for growth. • Generator provides power for 24 hours in the event of a major outage.
Project Implementation • Most inside work was done between 10 pm and 6 am, so as not to disrupt campus operations. • Outside construction occurred during the day (trenching, conduits, etc. ) • New network equipment (Stage 2) installed after a building was completely re-cabled. • Cutover by building (to new data & telephone cable system).
Included Buildings • Student Health Center • ERC 1 st floor, Theatre, LCH • Gym, Field House, Hughes Center • NSM, CP, PP, SBS, SOE • SCC buildings 6 - 11 • SCC buildings 1 -5
What about the other buildings? • Welch Hall – meets specs – recent construction. . • ERC floors 2 -5 - will be remodeled in the future (buying new switches as funding permits). • SAC 1, 2, 3 - older CISCO switches will be relocated from buildings covered by this project. • USU - covered by building addition project. • EAC - meets specs - recent “construction”.
Network Electronics • Campus core switch - CISCO 6509 (replaces CISCO 8540 router) • Building switches - CISCO 6509 or CISCO 4006. • Within building switches - most are 24 or 48 port CISCO 2950 s
CISCO Catalyst 6509 • Enterprise/building switch • Scalable platform • 9 -slot modular chassis, 1 slot reserved for supervisor engine • Switching backplane - up to 32 Gbps • Gigabit ethernet interface to other switches • Supports up to 384 10/100 ethernet ports • Routing capability (Layer 3)
CISCO Catalyst 4006 • “Branch office”/building switch • 6 -slot modular chassis, 1 slot reserved for supervisor engine • Supports up to 240 10/100 ports • Layer 3 routing capability
CISCO Catalyst 2950 • 24 or 48 port fixed-configuration, stackable switch, 2 GBIC uplink ports • Note - we are not stacking them - all will have a GBIC uplink to building switch/backbone connection • MTBF prediction - 159, 026 hours (in other words, they are very reliable)
Network Design • No change in topology (star). • Completely new parallel network. • Temporary “bridge” between Cisco 8540 router and new Cisco 6509 core switch to tie old and new networks together until the end of the project.
Network Design (continued) • All IDF switches will have “home run” fiber connection to BDF switch (no “daisy chains”). • All BDF switches will connect back to core campus switch in ERC via Gigabit ethernet over fiber. • Capability for redundant connections will be in place - will be implemented as funds are available.
More Network Design Info • IP only protocol on new network - no IPX, DECNET, LAT, Appletalk, etc. • Implementing private IP numbers - all 155. 135. XXX numbers will change to XXX. • Network address translation will be done at the campus border firewall ( we are purchasing a 2 nd firewall).
INTERNET 155. 135. 1. 1 (DHVX 20. CSUDH. EDU) CAMPUS FIREWALL XX. XX. XX (DHVX 20 INTERNAL #)
Benefits to CSUDH • Ability to deliver video and multimedia applications to classrooms and offices. • Ability to support next generation applications such as Voice over IP, wireless technologies, and People. Soft Student Record system. • Ability to rapidly adapt to changing technologies over the next few years.
More benefits • A more reliable, easier to manage campus network that is ten times faster (100 Mbps vs 10 Mbps). • Ability to detect and respond to network problems in a timely manner.
And more …. • Safer, more secure data communications rooms that meet standards. • Support for additional telephone and network installations in new Network Control Center as buildings are added and services expanded.
Questions? Send comments to: [email protected] edu Project website: www. csudh. edu/infotech/infrastructure/