* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download prosafel3switch_trai..
Survey
Document related concepts
Distributed firewall wikipedia , lookup
Asynchronous Transfer Mode wikipedia , lookup
Wake-on-LAN wikipedia , lookup
Zero-configuration networking wikipedia , lookup
Computer network wikipedia , lookup
Piggybacking (Internet access) wikipedia , lookup
Airborne Networking wikipedia , lookup
Nonblocking minimal spanning switch wikipedia , lookup
Network tap wikipedia , lookup
Cracking of wireless networks wikipedia , lookup
Deep packet inspection wikipedia , lookup
Internet protocol suite wikipedia , lookup
UniPro protocol stack wikipedia , lookup
Recursive InterNetwork Architecture (RINA) wikipedia , lookup
Transcript
ProSafe Layer 3 Switching Demetrios Coulis [email protected] Product Line Manager NETGEAR Agenda » » » » » What is Layer 2 switching? What is Layer 3 switching? Difference between Layer 2, Smart and Layer 3 management Why do I need Layer 3? When/how to up sell the customer © .1996-2004 NETGEAR® . All rights reserved 2 OSI Networking Model (Ethernet) 1. 2. 3. 4. 5. 6. 7. Physical data encoding (“What’s on the wire?”) Data Link layer (MAC addresses) Network layer (IP addresses) Transport layer (TCP port numbers or “applications”) Session Presentation Application (API) © .1996-2004 NETGEAR® . All rights reserved 3 Layer 2 Switching » Switches act like a traffic cop • Transmits data between devices within the same “VLAN” » A VLAN or “Virtual Local Area Network” is simply a grouping of ports » Broadcasts contained within a VLAN » Decision for next hop is based on the MAC address • MAC addressing is Layer 2 information » Dedicated bandwidth per port • Non-blocking architecture ensures total bandwidth and prevents dropped packets » Full-Duplex • Collisions eliminated from the days of shared access hubs » 10M, 10/100M, 10/100/1000M and now 10G speeds © .1996-2004 NETGEAR® . All rights reserved 4 Layer 2 Switching FSM750S FVX538 GSM7224 FSM726S © .1996-2004 NETGEAR® . All rights reserved GSM7224 5 Layer 3 Routing » Routers “route” traffic between separate L2 VLANs » VLANs are isolated broadcast domains • If you connect 2 together it becomes one large broadcast domain » VLAN can also be thought of as a “network” • A group of hosts that share the same network prefix (192.168.1.x) » Decision for next hop is based on the destination IP address • Remember: IP addressing is Layer 3 information » 10M, 10/100M and 10/100/1000M speeds » This is the way it used to be done… • ….slowly… © .1996-2004 NETGEAR® . All rights reserved 6 Layer 3 Routing FVX538 FSM750S FSM726S GSM7224 GSM7224 © .1996-2004 NETGEAR® . All rights reserved 7 Layer 3 Switching » New technology – “Put’s the “Routing” into the switch” • Layer 3 look-ups are pushed into ASICs » ASICs = Application Specific Integrated Circuits » Layer 3 is no longer “slow” • End-users don’t have to pay a penalty for “routing” • The old adage “Switch when you can, Route when you must” no longer applies » Layer 3 switching occurs at “wire-speed” • As fast as the wire can theoretically transmit data » 10M, 10/100M, 10/100/1000M and 10G speeds © .1996-2004 NETGEAR® . All rights reserved 8 Applications(2) FVX538 GSM7352S GSM7328S GSM7352S GSM7328S or XSM7312 (future) » Broadcasts are isolated and L3 switching is efficient © .1996-2004 NETGEAR® . All rights reserved 9 Unmanaged Switches » » » » » Use L2 information (MAC addresses) Invisible to the network Simple to set up/use Most affordable Common for • Smaller networks • Edges of large networks • Small user groups • Conference rooms • Dorm rooms © .1996-2004 NETGEAR® . All rights reserved 10 L2 Smart Switches » » » » Use L2 information (MAC addresses) Smart Switch Discovery Tool assigns an IP address Accessable via WEB Graphical User interface Give an IT manager access • Observe network • Configure ports • Configure VLAN, trunks, priority, etc. » Easy to use » Can act as unmanaged » Used in networks >50 users © .1996-2004 NETGEAR® . All rights reserved 11 L2 Managed Switches » Switch information only at Layer 2 (using MAC addresses) » Configurable via serial console port • Complete configuration, including IP address assignment » IP addressing gives access to Telnet, SSH, SNMP and WEB interfaces » Complete control over Layer 2 parameters » IT manager can • Observe network, including RMON (Remote Monitoring via SNMP) • Enable disable port-level parameters • Complete configuration fo VLANs, trunks, Quality of Service, etc. » Easy to use » Currently only stackable solution » Used in networks >50 users © .1996-2004 NETGEAR® . All rights reserved 12 Switch Portfolio Unmanaged 10/100 Gigabit 5 pt FS105 FS605 GS105 GS605 8 pt FS108 FS608 FS108P GS108 GS608 GS108T 12/16 pt FS116 FS116P JFS516 GS116 GS516T JGS516 24+ pt FS524 JFS524 JFS524F GS524T JGS524 JGS524F 48+ pt Smart 10/100 Layer 2 Gigabit 10/100 GS716T Gigabit 10/100 GSM7212 Gigabit GSM7312 FS726T FS726TP FS728TS GS724T GS724TS GS724TPS FSM726 FSM726S GSM7224 FSM7328S FSM7326P GSM7324 GSM7328S FS750T2 FS752TPS GS748T GS748TS GS748TPS FSM750S GSM7248 FSM7352S FSM7352PS GSM7352S Chassis © .1996-2004 NETGEAR® . All rights reserved Layer 3 GCM9306 GCM9048 GCM9024 GCM9124 Includes Roadmap Products 13 L3 Managed Switches » Same features and functionality as Layer 2 Managed switches » Supports L3 switching between VLANs when needed • Most flexible product to deploy » L3 is there when/if you need it » Interoperates with other routers to share routing information • RIP v1, v2 standards • OSPFv2 standards » Offloads edge router • Segments networks • Latest features (Priority, Security, BW) » More expensive & sophisticated » Used in networks > 100 © .1996-2004 NETGEAR® . All rights reserved 14 Why / When do you need Layer 3 switching? » When VLANs grow too large • Heavy broadcast loads slow a network down » To separate user groups • Organizational requirements » Finance, Manufacturing, Engineering • Security requirements » Layer 3 Access Control Lists (ACLs) help to prevent access • Uptime requirements » Small user groups are easier to troubleshoot » Decreases downtime © .1996-2004 NETGEAR® . All rights reserved 15 Efficient Network Infrastructure FVX538 GSM7352S GSM7328S GSM7352S GSM7328S or XSM7312 (future) » Broadcasts are isolated and L3 switching is efficient © .1996-2004 NETGEAR® . All rights reserved 16 How do I sell Layer 3 switching? » When large “flat” VLANs grow too large and cause outages • Segmented Networks » Run faster » Less Congested » Down less frequently » To meet IT or organizational requirements • Functional segmentation • Security concerns • Uptime requirements and reliance on the network » Layer 3 switching can be sold into any size network • Generally can start as small as 50-100 users • Can also integrate and interoperate in large “enterprise” networks already in place » Branch Office, Remote Office requirements © .1996-2004 NETGEAR® . All rights reserved 17