Network Fundamentals

Network Devices Routers (Layer 3)

Network Devices Switches (Layer 2, Layer 4-7) Routers (Layer 3)

Network Devices Firewalls Switches (Layer 2, Layer 4-7) Routers (Layer 3)

Network Devices DSL Modem Cable Modem Wireless Modem Satellite Modem Firewalls Switches (Layer 2, Layer 4-7) Routers (Layer 3)

Circuits Ethernet LSS DSL SONET T1 - P:P - Frame Relay

Node Addressing Every device on the Internet has a unique IP Address IPv4 IP Addresses 4.3 Trillion Addresses (2 32 ) dotted decimal notation IPv6 IP Addresses Lots of addresses (2 128 ) 21ED: 201A: C400: 8AF2: 01CC: 2000: 1A1E: 5722 Subnet Mask determines network portion of address and host portion of address Public Address Space versus Private Address Space

OSI Protocol Stack

Add header information to packet as it leaves a device. Strip header information as a packet is received.

Network Protocols Routing IGP (EIGRP, RIP, IS-IS, OSPF … ) EGP (BGP) ICMP – Ping 802.1Q – Layer 2 Trunking x – Network Access Control QoS – Quality of Service Traffic Prioritization DSCP Value Affects Queuing

Network Protocols DNS ARP MPLS (Layer 2 ½) Virtualizes the network (VRFs) Enables network security Pseudo-wire Jumbo frames

Routing In Action

Security Network Security Data Security

Use Strong Passwords Drive Encryption Browsing behavior Browser Security Settings Suspicious or unsolicited with attachments or links Virus Protection Application Layer Encryption (SSL, HTTPS, traditional apps) (continued …)

Data Security VPN Session Client Site to Site Direct Connection to businesses

Network Security ACLs on network gear Network Access Control (802.1x) Firewalls IDS / IPS MPLS VPN Concentrators (Continued … )

Network Security Content Filters Rate limiting / shaping appliance NAT / PAT addressing ACS server

Consolidation (Continued … )

Consolidation (Continued … )

Consolidation

Network Convergence What is Unified Communications (UC)?

Network Convergence UC is the integration of real-time communications services (chat, presence information, telephony, video) with non-real-time communications services (voic , , SMS, fax) - Wikipedia What is Unified Communications (UC)?

Network Convergence Integrated network that carries voice, video, and data Where is the State of Utah headed? Converting ISDN video to IP video, removing a parallel network VoIP trial in production (Continued … )

Network Convergence Where is the State of Utah headed? (cont …) VoIP / UC RFP in late October Trunking reduced Network bandwidth requirements rise Elimination of intrastate long distance Concerns: Bandwidth Quality of service Network delay Jitter Latency

Virtualization Network MPLS – Virtual Route Contexts Frame Relay – DLCIs ATM – VCs Ethernet – EVCs Servers VMware on blade chassis Desktops VHDs – Virtual Hosted Desktop on server Stream OS and / or apps to PC Network Versus Server Versus Desktop Intensive

Data Center Consolidation

Wi - Fi Access Points “Open” Guest Network Secure, Encrypted Sessions

Wi - Fi Bridge Mode

Operations Data Network Operations Personnel Monitor Data Network Resolve Outages Configure Network Services Voice Network Operations Personnel Monitor Voice Network Resolve Outages MACs Wouldn’t it be nice to consolidate these two groups into a single point of contact?

Telecommuting

Industry Trends Cloud Computing / SaaS Consolidation / Virtualization

Review

Thank you Questions? …