Campus Case Studies in Implementing Advanced Services Cas D’Angelo

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Presentation transcript:

Campus Case Studies in Implementing Advanced Services Cas D’Angelo

Preparing for Advanced Services Gigabit ethernet migration Gateway routers Performance testing TCP tuning Multicast Security

Gigabit ethernet migration Georgia Tech has installed 100+ ELANS Implemented as a standards based VLAN New standards such as 802.1q now available

Gigabit ethernet migration Gigabit ethernet - supports large MTU Wire speed routing Trying to go with IP only backbone Never routed IPX across backbone Appletalk is the next protocol to be eliminated

Gigabit ethernet migration Building design moving from ATM attached ethernet switches to Gigabit ethernet attached 10/100 switches

Gateway routers Redundant routers SoX Internet 1 PeachNet ATM OC-12 Gigabit Ethernet Backbone (other campus routers) Gateway 1 Router Gateway 2 Router

Gateway routers OSPF load balancing for backbone Packets alternate between routers Both advertise default route originate

Gateway routers BGP used to control ISP traffic Prefer SoX routes AS padding for Internet 1 traffic Arrangement with SoX to support large MTU

Performance testing - TCP tuning Iperf: Tools for experimenting with bandwidth throughput and adjusting TCP window sizes Nettest: A secure, real-time network monitoring framework which includes Iperf

Performance testing - TCP tuning Autobuf: An auto tuning-enabled FTP client and server

Multicast Vendors still working out problems Multivendor interoperability leaves finger pointing problems Within last few months have fought with mbgp community issue Great tool: Access Grid + Multicast Beacon

Security Border data - Tracking flows at egress to campus Research machines are target for DOS, must be made secure Firewalls are being installed to ease system administration and for contracts

Questions Cas D’Angelo, Network Manager Georgia Institute of Technology Office of Information Technology