Madge Networks Token Ring Switch manuale d’uso

1 Smart DeskStream Token Ring Switch[...]

2 Smart DeskStream Technical Presentation 2 Smart DeskStream Objectives n At the end of this session you will be able to: n Describe the Smart DeskStream features n Demonstrate its connectivity options, including: l Ports and LEDs l Stacking module l TR fiber module l HSTR modules n Explain the DeskStream’s management options using l TrueView /32[...]

3 Smart DeskStream Technical Presentation 3 What is Desktop Switching ? Conventional Shared Token Ring n Users share the Token Ring network n Often up to 80 users share 16Mbps Fully Switched Token Ring n Each user has their own dedicated Token Ring ! n No need to share 16Mbps with other users n Connections can be Full Duplex (32Mbps) Shared User Ri[...]

4 Smart DeskStream Technical Presentation 4 Smart DeskStream Product Overview n Designed as a shared hub replacement n 1 U high n 24 ports with auto ring speed and protocol detect n Plug ‘n’ Play installation n Easily stacked to offer up to 192 ports n High performance switching n Simple, graphical management The DeskStream is a workgroup switc[...]

5 Smart DeskStream Technical Presentation 5 Easy Integration into existing networks Shared User Ring Typical Network Layout Network Backbone CAU/LAM or Chassis The slide shows part of a typical network, with CAUs providing a shared medium interface for the workstations. The CAUs are connected to Ringswitches as are the servers. Ultimately some user[...]

6 Smart DeskStream Technical Presentation 6 1. Move users to switched, DeskStream ports n Simple, reconnection of ports n Immediate bandwidth upgrade for 23 users n Improved manageability and reliability Easy Integration into existing networks Network Backbone 2. Reduce size of shared ring n Greater bandwidth for remaining shared users 3. Introduce[...]

7 Smart DeskStream Technical Presentation 7 1. Add DeskStreams as needed n Easily scalable solution n High port density releases rack space Easy Integration Hub Replacement Switched User Ring 2. Move all users to switched ports n Performance, security and manageability for each user connection Network Backbone As time and money permits, the remaini[...]

8 Smart DeskStream Technical Presentation 8 1. Add additional links to backbone n Resilience, load sharing and higher access speeds Powerful, Flexible Connectivity Resilience Switched User Ring Network Backbone CAUs can be connected to two Ringswitches to give a resilient link, so can the DeskStream, either as a standalone device or, as shown in th[...]

9 Smart DeskStream Technical Presentation 9 1. Use HSTR uplinks to increase backbone access n Resilience, load sharing and higher access speeds 2 x 100Mbps Powerful, Flexible Connectivity Resilience and Performance Switched User Ring Network Backbone If bandwidth still needs to be extended, the DeskStream supports HSTR uplink modules - both copper [...]

10 Smart DeskStream Technical Presentation 10 Smart DeskStream Token Ring Switch n 24 workstation ports with two module slots Smart DeskStream Stacking Module n One required for each DeskStream to be stacked Smart DeskStream TR Fibre Module n Dual ports, 4, 16Mbps and DTR, load sharing and redundancy Smart DeskStream HSTR Copper Module & Smart [...]

11 Smart DeskStream Technical Presentation 11 Smart DeskStream behaves like a hub n When integrating DeskStream into an existing network, use it as if it was a CAU/LAM. Smart DeskStream is designed for simplicity n DeskStream offers full auto-configuration for simple installation Smart DeskStream Background Positioning[...]

12 Smart DeskStream Technical Presentation 12 n Smart DeskStream is NOT designed as a backbone applications switch n You can only support a shared device on one port n It does NOT offer Active Broadcast Control, full RMON or protocol filtering. l These are backbone features, not required at the workgroup level n Smart Ringswitch Family is for backb[...]

13 Smart DeskStream Token Ring Switch Connectivity[...]

14 Smart DeskStream Technical Presentation 14 n 24 RJ45 ports n Each behaves EXACTLY like a shared hub port n Each port has its own MAC address n Ports 1 - 23 are direct , each can be connected to l Adapters l Bridges/ Routers l Backbone TR switches n Direct ports are also known as slave or concentrator (on Ringswitches) ports Connectivity Ports Th[...]

15 Smart DeskStream Technical Presentation 15 n 24th RJ45 port n 24th port is a master, and can be l connected to a shared Hub port (any type/vendor) l re-configured as a direct port n Master port is also known as node (on Ringswitches) n Master port can therefore be configured as node or concentrator, similar to a Ringswitch port Connectivity Port[...]

16 Smart DeskStream Technical Presentation 16 Connectivity Ports - 3 n Ring Speed / Protocol Detect n Each port supports 4Mbps, 16Mbps and Full Duplex (Dedicated TR) l Default is auto speed sensing l Ring speed may be manually configured on a per port basis n Impedance is matched to support UTP/STP cabling l No requirement for a separate media filt[...]

17 Smart DeskStream Technical Presentation 17 n Left Port LED: n Green - Port open n Flashing green - Disabled n Right Port LED: n Red - Port closed n Flashing red - Error n Port 24 will flash red by default (because it is master as default) Connectivity Ports - LEDs Left LED - flashing green; disabled by management software Right LED - red. This h[...]

18 Smart DeskStream Technical Presentation 18 n First LED on right of unit - Status n Green - Normal operation n Flashing green - Diagnostic self test n Red - Error l System Failure n Flashing Red - Warning l E.g. Fan Failure Connectivity Status LEDs System failure - e.g. CPU crash i.e. will require a replacement DeskStream Warning - failure which [...]

19 Smart DeskStream Technical Presentation 19 n Second LED, Module Link 1 n Green - Port open n Red - Port closed n Flashing green - Disabled n Flashing red - Error n Third LED, Module Link 2 - As for Link 1 Connectivity Status LEDs - 2 Flashing red - e.g. module installed as node, but with nothing connected[...]

20 Smart DeskStream Technical Presentation 20 n Stacking Module and Cable n Installed into stacking slot on rear of each DeskStream in a stack l module has two mini SCSI connectors n Supplied with short, mini-SCSI cable n Top port connects to DeskStream above n Bottom port connects to DeskStream below n Unused ports do not need to be terminated n 8[...]

21 Smart DeskStream Technical Presentation 21 n Bottom DeskStream n Automatically configures itself as Master n Assumes responsibility for stack management n TrueView sees the stack as a single icon n Uses Master mgmt MAC address or LAA l Mgmt MAC is same as base MAC address n Single IP address per stack n Single download image, l Master takes care[...]

22 Smart DeskStream Technical Presentation 22 n Stacking Module cannot be hot- swapped n DeskStream unit must be powered off before installing stacking module n Cable may be connected to another DeskStream while it is powered on n Stacking becomes active on reboot of all DeskStream units in stack Connectivity Stacking Module - 3 It is important to [...]

23 Smart DeskStream Technical Presentation 23 n DeskStream Resilience n Lost power or stacking module failure n Stack will reboot n If failing unit is in the stack center, two separate stacks will form n ‘New’ stack appears under TrueView/32 (If secondary uplink exists) Stack 1 Stack 2 Connectivity Stacking Module - 4 A DeskStream may fail in t[...]

24 Smart DeskStream Technical Presentation 24 n DeskStream Resilience n If stacking module remains operative n Stack will reboot n If failing unit is in the stack center, stack continues to operate n DeskStream will be shown as failed under TrueView/32 Connectivity Stacking Module - 5 Single Stack In the second case, the Master will detect the fail[...]

25 Smart DeskStream Technical Presentation 25 Uplink Connectivity The icon will display the uplink ports on all the Deskstreams in the stack Use the icon to display the uplink ports Uplink modules are installed in the back of the unit Managing the Uplink Module The uplink is a function of the stack so selecting the uplink icon will display all the [...]

26 Smart DeskStream Technical Presentation 26 Uplink Connectivity The icon will display all the uplink ports which exist on the stack Select individual ports for management Link 1 is port 25 and Link 2 is port 26 Managing the Uplink Module The uplinks are, to a large extent, just two more ports similar to port 24 in that the port type can be config[...]

27 Smart DeskStream Technical Presentation 27 n Dual Link Fiber Connectivity n Each link supports 4Mbps, 16Mbps and Full Duplex (DTR) n Links operate independently n Allows redundant links / load sharing in Fiber environments n Each link can be set to Master or Direct mode (Node or Concentrator mode) Fiber Connectivity TR Fiber Module - 1 The two u[...]

28 Smart DeskStream Technical Presentation 28 n Allows Fiber connection to n TR Fiber adapters n Backbone TR switch fiber ports n Third party Fiber TR shared hub ports n TR CAU Fiber Trunk Link l configure for Ring In, Ring Out mode n Other DeskStream Fiber modules l In back to back mode One DeskStream Link set as master, the other set as direct Fi[...]

29 Smart DeskStream Technical Presentation 29 n Fiber port Specifications n Uses standard IEEE 802.5j specifications n Operates at wavelength 850 nm n Supports Multi-mode Fiber cabling l 62.5/125um or 50/125um acceptable n Distances of 2Km n ST connectors Fiber Connectivity TR Fiber Module - 3[...]

30 Smart DeskStream Technical Presentation 30 n Dual Link HSTR Connectivity n Each link supports 100Mbps Full Duplex DTR n Compatible with IEEE 802.5t n Copper module uses RJ45 connectors n Fiber module uses SC connectors n Links operate independently n Offer redundant links / load sharing n Each link can be set to Master or Slave mode High Speed T[...]

31 Smart DeskStream Technical Presentation 31 n Allows HSTR connection to n HSTR adapters (for servers & power users) n Backbone HSTR switch ports n Other DeskStream HSTR modules l In back to back mode l One DeskStream Link set as master, the other set as slave HSTR Connectivity HSTR Copper and Fiber Modules - 2[...]

32 Smart DeskStream Technical Presentation 32 n HSTR Fiber port Specifications n Uses standard IEEE 802.5t specifications n Operates at wavelength 1300 nm (same as FDDI) n Supports Multi-mode Fiber cabling l 62.5/125um or 50/125um acceptable n Distances of 2Km n SC connectors HSTR Connectivity HSTR Fiber Module[...]

33 Smart DeskStream Token Ring Switch Management[...]

34 Smart DeskStream Technical Presentation 34 Smart DeskStream Manager n Graphical, Windows-based management n Uses Madge’s TrueView/32 platform l 16-bit TrueView does not support DeskStream n Easy to use n Will integrate with other platforms l DeskStream Mgr for HP OpenView for HP-UX and NT l DeskStream Mgr for Tivoli NetView for IBM AIX Command[...]

35 Smart DeskStream Technical Presentation 35 Software Downloads n Download in active mode l Download becomes active on reboot n Single download file for all flash and microcode files l TFTP over IPX or IP l SNMP over IPX or IP l Flash memory to run diagnostics, MAC and boot sequence Smart DeskStream Management Features All downloads are performed [...]

36 Smart DeskStream Technical Presentation 36 Easy to configure options n Up to 5 write and read passwords n Dynamic table of port configurations n Copy bit on transparent frame option Simplified support n Menu icon to view all microcode versions n Configuration downloads and uploads n Switch status report Smart DeskStream Manager Advanced Function[...]

37 Smart DeskStream Technical Presentation 37 Telnet and serial interface menu is easy: DeskStream Terminal Configuration 1. General 2. Versions 3. IP 4. Port 5. Port Group 6. Spanning Tree 7. Bridge 8. Download 9. Debug 10. Quit Enter selection number: Smart DeskStream Manager Command Line Interface The CLI is divided into a number of sections, ea[...]

38 Smart DeskStream Technical Presentation 38 Diagnostic Downloads n Self-tests run on every reboot n Output is sent over serial port as it runs n On failing, l The test will halt l The Status LEDs will flash to signify an error l The failing test message will be re-sent to the serial port every 15 seconds l A terminal can then be connected to see [...]

39 Smart DeskStream Token Ring Switch Source Route Switching[...]

40 Smart DeskStream Technical Presentation 40 Smart DeskStream Objectives At the end of this session you will be able to: n Explain Source Route Switching, including n Concentrator Relay Function n Bridge Relay Function n Demonstrate IBM & IEEE Spanning Tree support n Use the built-in Diagnostics[...]

41 Smart DeskStream Technical Presentation 41 Source Route Switching n What is Source Route Switching ? n Industry term for using switching in the workgroup n Refers to IEEE 802.5 Annex K specification n Supports Transparent and Source Route traffic n How does it work ? n Switch behaves like a transparent switch l Matches the MAC address and route [...]

42 Smart DeskStream Technical Presentation 42 Source Route Switching ‘Annex K’ n Components of Annex K ? n Concentrator Relay Function (CRF) l Handles switching process l All ports access the network using the same ring number (source routing) l Includes all ports (by default) within a stack of DeskStreams n Bridge Relay Function (BRF) l Allows[...]

43 Smart DeskStream Technical Presentation 43 Source Route Switching Frame Forwarding using CRF n DeskStream behaves as a transparent bridge n It learns the MAC and RIF information in passing frames, and builds up an address table l Also known as Active Learning n As frames arrive, the next hop or destination MAC address is looked up in the table t[...]

44 Smart DeskStream Technical Presentation 44 n Resilient links Backbone Source Route Switching Introducing multiple uplinks - 1 A X Ring Number 101 Dual uplinks to the same backbone switch This is an illegal configuration - two ports on the same switch cannot connect to the same ring Note: SRT+ will not overcome this - SRT+ learns configuration fr[...]

45 Smart DeskStream Technical Presentation 45 n Load sharing connectivity Backbone Source Route Switching Introducing multiple uplinks - 2 B A Dual uplinks to different backbone switches Both uplinks will be active, allowing load sharing of source route traffic AREs and specifically routed frames will pass through (Transparent traffic will still be[...]

46 Smart DeskStream Technical Presentation 46 n What is the Bridge Relay Function? n Provides SRT bridging between SR ring numbers on different ports n Allows a different ring number to be set on each port n Ports cannot share a ring number Source Route Switching Bridging using BRF 109 107 108 The BRF allows us to set up ports outside the CRF. Thes[...]

47 Smart DeskStream Technical Presentation 47 BRF Port Interface (SRB) ‘Virtual’ port n What is the Bridge Relay Function? Source Route Switching Bridging using BRF Port 17 (ring 107) Port 20 (ring 108) Port 23 (ring 109) DeskStream ports CRF Port Interface (Local) The CRF manages switched communication between its ports. The BRF is only availa[...]

48 Smart DeskStream Technical Presentation 48 n Use the Set icon Source Route Switching Setting up the BRF interfaces n Select ‘Advanced…’ Setting up the BRF is a global function using the indicated icon. The port grouping dialogue box specifies the CRF parameters, but the Advanced button takes us to the internal interfaces - local and SRB.[...]

49 Smart DeskStream Technical Presentation 49 Source Route Switching Setting up the BRF interfaces Local IF parameters SRB IF parameters The main use of the two parts of this dialogue box is to vary the path cost. These two interfaces are within the DeskStream and for optimal network management we don’t want these to be standby or blocking bridge[...]

50 Smart DeskStream Technical Presentation 50 n Select a port Source Route Switching Setting up BRF on a port n Select SR bridging Once the interfaces are set up, enabling SRB on individual ports on the Master DeskStream is simple. The SR Bridging entry in the menu will only appear on ports on the Master DeskStream. Select this entry.[...]

51 Smart DeskStream Technical Presentation 51 n Enable SRB Source Route Switching Setting up BRF on a port - 2 n Auto learn or Specify ring number The resulting dialogue box is similar to that for the CRF except that we can enable Source Route Bridging and there is no Advanced button. We can choose to enter a ring number or let the device find it f[...]

52 Smart DeskStream Technical Presentation 52 n CRF is operational on all ports in stack by default n CRF will attempt to learn ring number n the CRF ring number can be manually configured Source Route Switching Combining CRF and BRF functions CRF BRF n BRF will only function on master DeskStream n only ports on master DeskStream are supported on B[...]

53 Smart DeskStream Technical Presentation 53 Use BRF to set one of the ports to a different ring number This is a legal configuration - both uplinks will be active n Load sharing, resilient connectivity Source Route Switching Introducing multiple uplinks - 3 101 BRF Ring Number 102 Active Active A Dual uplinks to the same backbone switch This is a[...]

54 Smart DeskStream Technical Presentation 54 n Setting Spanning Tree mode Source Route Switching Introducing multiple uplinks - 3 n Select icon n Set IEEE or IBM n Set SRT or SR only Selecting the bridge icon brings up the Bridging Information dialogue box. In this we can set the Bridge Number (in a resilient network) and the global hop count limi[...]

55 Smart DeskStream Technical Presentation 55 n DeskStream supports IEEE n DeskStream participates in negotiation Spanning Tree IEEE Spanning Tree Support Ring Number 101 IEEE SPT X DeskStream CRF and BRF send out and respond to IEEE spanning tree frames CRF BRF Ring Number 102 CRF to BRF link has a very low path cost to avoid blocking within the D[...]

56 Smart DeskStream Technical Presentation 56 n DeskStream DOES NOT participate in IBM Spanning Tree negotiation Spanning Tree IBM Spanning Tree Support 1 2 Switch 1 sends IBM Spanning Tree BPDU DeskStream forwards BPDU to all ports, including other uplinks Switch 2 receives BPDU, and appears as direct link To prevent a loop, one backbone port will[...]

57 Smart DeskStream Technical Presentation 57 CRF n BRF can be configured to participate in IBM Spanning Tree negotiation Spanning Tree IBM Spanning Tree Support - 2 BRF Ring Number 102 BRF negotiates with other switches in the network to configure the spanning tree CRF to BRF link has a very low path cost to avoid blocking within the DeskStream Bl[...]

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