ADDER AdderLink Digital iPEPS Скачать руководство пользователя страница 49



























48

Appendix 6 - An introduction to IPv6 

During the initial design of the Internet, 4.3 billion seemed like an impossibly 
large number of device addresses, possibly more than would ever be needed. 
It took nearly forty years, but finally the last remaining vacant address blocks 
within the current Internet Protocol scheme (called 

IPv4

) were assigned in 

February 2011.
The Internet Protocol is a crucial element of Internet operation and the eventual 
exhaustion of unique addresses was predicted and acted upon many years 
ago. The replacement for IPv4 is known as 

IPv6

 and was defined in December 

1998. Since then its uptake has been slow (reportedly used for less than 1% of 
Internet traffic in 2008) although this will increase rapidly as places within the 
incumbent system are exhausted.

Vastly increased address space

The most notable feature of IPv6 is the size of its address space, put simply: It’s 
massive. By using 128 bits to define each IPv6 address (rather than the 32 bits 
used in IPv4), there are now 340 x 10

36

 unique addresses (that’s 340 trillion 

trillion trillion or as it is correctly known, 340 undecillion).
The larger address size of IPv6 requires a different manner of notation. Instead 
of the four decimal numbers separated by dots used for IPv4 (e.g. 192.168.0.1), 
IPv6 addresses consist of eight groups of four hexadecimal digits that are 
separated by colons (e.g. 

2002:00a2:67be:0000:0000:0e82:8723:a144

) – 

each group of four digits represents 16 bits of the address. By necessity, IPv6 
addresses are quite long and so there are a couple of techniques to help reduce 
this in certain cases:

•  Where a group has one or more leading zeroes, these can be omitted. In the 

above example 

00a2

 and 

0e82

 can be written 

a2

 and 

e82

, respectively.

•  Where one or more consecutive groups consist solely of zeroes, they can 

be replaced with a double colon (

::

). In the above example, the fourth and 

fifth groups could be replaced with the double colon, so that the whole line 
could be reduced to: 

2002:a2:67be

::

e82:8723:a144

. It is easy to return any 

such shortened address to the full version by replacing the double colons 
with sufficient groups of zeroes until the total number of groups is returned 
to eight. For this to work it is essential that only one set of consecutive zero 
groups within an address are replaced with a double colon.

Standard subnet size

Thanks to the new huge address space, IPv6 does not need to wring every 
last drop out of each address range and so it handles address allocation in a 
different manner than its predecessor. Whereas IPv4 uses subnets of varying 
sizes (using the Subnet Mask entry to define the size of each subnet), IPv6 
subnets are (almost) all set to a standard size. A full 64 bits are used to define 
each subnet, which means that every standard IPv6 subnet has use of an address 
space that is the square of the entire IPv4 address space (that’s 1.8 x 10

19

 

addresses per subnet). In those subnets, all addresses are valid host locations; 
gone are special address formats for particular uses, such as broadcast traffic. 
Also, now that all standard subnets are the same size, the subnet mask is 
another item that is made redundant under IPv6.

Address allocation

Every device attached to an IPv6 network usually has more than one address 
type. The two most common types are called a 

link-local address

 and a 

global 

address

 and these can be assigned in a number of ways. 

In IPv4, device addresses are most commonly assigned either manually or by 
using a Dynamic Host Configuration Protocol server (DHCP). IPv6 also offers 
manual addressing and DHCP (now called DHCPv6 and fully supported by the 
Digital iPEPS unit), but also allows devices to automatically configure their own 
addresses using a series of steps defined as 

StateLess Address AutoConfiguration

 

(or 

SLAAC

). The key parts of the SLAAC procedure occur roughly as follows:

•  The IPv6 compliant device creates a 

tentative local identifier

 which is usually 

derived from its fixed unique hardware identifier (or MAC address). The 
local identifier is 64 bits in length (the lower half of the full 128 bit address) 
and this is one of the advantages of having a fixed subnet size; it is very 
straightforward to automatically figure out the boundaries and contents of 
the local network. This is exactly what the device does next with its tentative 
local identifier. 

•  The device uses the 

Neighbor Discovery Protocol

 (part of the 

Internet Control 

Message Protocol

 suite – 

IMCPv6

) to check within the local network whether 

its tentative local identifier is being used by any other device. If it is, then 
the device will create a new one and start the process again. If the local 
identifier is unique within the local network, it is then combined with the 
standard link-local prefix (

fe80::

) to form a valid link-local address. At this 

stage the address is valid only for communication within the local network. 
The next stage is to replace the link-local prefix with a global prefix and 
then carry out a similar procedure in order to prevent address duplication, 
resulting in a validated global address.

continued

Содержание AdderLink Digital iPEPS

Страница 1: ...AdderLink Digital iPEPS User Guide...

Страница 2: ...method 12 Operation Using the viewer window 13 The menu bar 13 When using the viewer window 13 Host selection 14 Configure 14 Auto calibrate 15 Re synchronise mouse 15 Access mode shared private 15 Po...

Страница 3: ...ss control 39 Serial port configuration 40 Host configuration 41 Power switching configuration 42 Logging and status 43 LDAP configuration 44 Appendix 5 Networking issues 45 Positioning Digital iPEPS...

Страница 4: ...here is no performance hit associated with other remote solutions and also provides the authorised remote user with complete control The remote user uses a compact VNC viewer utility and can link to t...

Страница 5: ...Mb or 100Mb network and whether a cross over or straight cable is in use The green and yellow indicators provide useful status information Audio input Optionally use the supplied 3 5mm jack cable to l...

Страница 6: ...5A Four self adhesive rubber feet 3 5mm jack stereo audio cable Part number VSC22 2 x USB cable 2m type A to B Part number VSC24 Video cable 2m DVI D to DVI D Part number VSCD1 Rack chassis faceplate...

Страница 7: ...ethods Supplied four self adhesive rubber feet Rack chassis faceplate see below Connections Two countersunk screws are included to attach the supplied faceplate to the Digital iPEPs unit and one panhe...

Страница 8: ...t computer 3 Connect one of the supplied USB cables to the socket labelled and the other end to a vacant USB port on the host computer 4 Optional step If the Adder Virtual Media feature is required an...

Страница 9: ...ress allocation and or firewall adjustment to allow correct operation Please refer to Networking issues within the Configuration chapter for more details IMPORTANT When the Digital iPEPS is accessible...

Страница 10: ...e then you will need to use the supplied power adapter On the side panel of the Digital iPEPS use switch 1 to determine how power should be derived SW1 OFF Derive Digital iPEPS power from either the U...

Страница 11: ...d enter the default local IP address used by the Digital iPEPS http 192 168 1 42 The Digital iPEPS welcome screen should be displayed 3 Click the link Download the Windows VNC Viewer from unit 4 Once...

Страница 12: ...viewer window may open straight away if so continue at step 6 or the system may require user authentication in which case an authentication dialogue will be displayed Options button Provides a range o...

Страница 13: ...e Configure button in the top right corner of the window 4 Click the Unit Configuration button 5 Click the Advanced Unit Configuration button 6 Click the Upgrade Firmware button A dialogue box will be...

Страница 14: ...but is most often set to F8 How do I make the most of a slow connection The VNC viewer is slightly better suited to slower connections than the browser viewer because it offers more options Click the...

Страница 15: ...ing details for two or more computers have been declared within the configuration section by the admin user To select a host 1 Click the Hosts button to display a list of computers 2 Click the require...

Страница 16: ...to select the required computer 2 Click the Power button and then select the Switch on or Switch off option as appropriate Auto calibrate Auto calibrate will calibrate the mouse only if relative mouse...

Страница 17: ...he viewer window 3 Click the User Accounts button 4 Against the entry for the required user click the Menu Bar Edit button The following dialogue will be displayed 3 Click on any option within the pop...

Страница 18: ...the mouse button escape sequences see Advanced unit configuration for details The single mouse mode does not require calibration Resync Mouse This option has the same effect as the button on the menu...

Страница 19: ...s where problems are encountered with the Calibrate function For best results choose the appropriate Change motion entry to match the host in use The available Change Motion schemes are Constant XFree...

Страница 20: ...lity by continuously slightly varying the colour of each pixel This gives the illusion of more shades of colour than the display can really reproduce and smooths the appearance of gradually shaded are...

Страница 21: ...ould be transmitted A level of 25 means the audio input needs to be above 25 of the maximum before it is transmitted Min burst ms The time period for which the audio input must fall below the threshol...

Страница 22: ...sing the VNC viewer 2 If not already done use Windows Explorer to locate and copy the required file s or folder s to the clipboard 3 Within the VNC viewer window click the Controls button and then sel...

Страница 23: ...Click the checkbox adjacent to the listed disk drive that you wish to make available to the host computer or Add a Disk Image File Select the disk image file and click Open 4 In the Virtual Media dia...

Страница 24: ...2 Set Configuration Switch 2 to the ON up position 3 Apply power to the unit either from the power supply or via both USB cables 4 Within five seconds set Switch 2 to the OFF down position Note If th...

Страница 25: ...nformation contained within this guide then we provide a number of other solutions Online solutions and updates www adder com support Check the Support section of the adder com website for the latest...

Страница 26: ...menu The menu key is the only way to exit from the full screen viewer mode Display Scaling No Scaling No attempt is made to make the screen image fit the viewer window You may need to scroll horizont...

Страница 27: ...ton mouse to emulate the middle button of a 3 button mouse When enabled press the left and right mouse buttons simultaneously to create a middle button action You are advised to generally use a 3 butt...

Страница 28: ...t relevant to Digital iPEPS connections and should be left in their default states Expert The options within this section work correctly with Digital iPEPS in their default states and should not requi...

Страница 29: ...ecause certain keys and key combinations are trapped by the VNC viewer Refresh Screen Requests data from the server for a complete redraw of the screen image not just the items that change Virtual Med...

Страница 30: ...rs for almost all browsers Inputs View only ignore mouse keyboard When ticked the viewer will not send keyboard or mouse information to the Digital iPEPS or host computer Accept clipboard from server...

Страница 31: ...ser 2 Click the Configure button in the top right corner The main configuration menu will be displayed The various configuration pages are covered within this appendix User Accounts Gui edit configura...

Страница 32: ...cters in length but cannot contain foreign characters Password Each password can be between 1 and 16 characters in length A suitable password is best constructed using a mixture of more than 6 letters...

Страница 33: ...ser log on as the admin user 2 Click the Configure button in the top right corner 3 Click on User Configuration 4 Click on the relevant Edit button To edit the menu bar locally 1 Login remotely via VN...

Страница 34: ...d the default setting is 4 VNC Viewer Hot Key Sequence When using the VNC Viewer you can use key press combinations to select host computers and also to display the host selection menu This option all...

Страница 35: ...d video modes The default EDID should be sufficient for the vast majority of situations If necessary use the Edit Preferred and Standard Timing button fine tune settings to support specific situations...

Страница 36: ...uires no adjustment Single Mouse Mode Mouse Switch Select the mouse button combination to exit from single mouse mode when active Use Quick Mouse Calibration Invokes optimised calibration techniques t...

Страница 37: ...aving time is Mm w d Where m specifies the month and must be between 1 and 12 The day d must be between 0 Sunday and 6 The week w must be between 1 and 5 week 1 is the first week in which day d occurs...

Страница 38: ...en called the subnet mask this value is used alongside the IP address to help define a smaller collection or subnet of devices on a network In this way a distinction is made between locally connected...

Страница 39: ...se basis for a fixed amount of time or for as long as the Digital iPEPS remains connected and switched on Discover allocations If this option is set to No the Digital iPEPS will use the Stateless Addr...

Страница 40: ...re that any specific allowed addresses are listed higher in the list than any denied addresses Take care not to invoke any deny access settings that would exclude valid users 1 In the access control l...

Страница 41: ...rates are available To get here 1 Using VNC viewer or a browser log on as the admin user 2 Click the Configure button in the top right corner 3 Click the Serial port Configuration option Baud Rate De...

Страница 42: ...Adder Port Direct for details Hotkey Host Number Declare the numeric sequence that is pressed together with the VNC viewer hotkeys usually Ctrl Alt to select this host system which is the same value...

Страница 43: ...el numbers PSU 8SLAVE and PSU 1GUARD other power switches may require different settings Please refer to your power switch documentation for details about codes required by other power switches The st...

Страница 44: ...lipboard 2 In a text application i e Word WordPad Notepad press Ctrl and V or right mouse click and Paste Date and time the event occurred Type of event user name and access method or remote IP addres...

Страница 45: ...Typically Active Directory deployments are not configured for anonymous binding Hence in our implementation of LDAP and Active Directory support for the Digital iPEPS we have opted have a single user...

Страница 46: ...s and web browsers will locate the Digital iPEPS correctly using only its network address The firewall router must be informed to transfer traffic requesting these port numbers through to the Digital...

Страница 47: ...iPEPS will contact the DHCP server and obtain a new address 2 Re enter the same Network configuration screen where the new IP address and network mask should be displayed DNS addressing As with any ot...

Страница 48: ...ers Reserve the admin password for administration use only and use a non admin user profile for day to day access Use the latest Secure VNC viewer this has more in built security than is available wit...

Страница 49: ...of each address range and so it handles address allocation in a different manner than its predecessor Whereas IPv4 uses subnets of varying sizes using the Subnet Mask entry to define the size of each...

Страница 50: ...while both versions coexist exchanging traffic between them will require many relay routers and various transition techniques One such technique involves IPv4 mapped IPv6 addresses These are used in...

Страница 51: ...ity purposes it is not possible to retrieve user names or passwords from the Digital iPEPS To use KVMADMIN you require the IP address and admin password of the Digital iPEPS unit The command line is a...

Страница 52: ...870p at 75Hz 1280 x 960p at 60Hz 1280 x 1024p at 67Hz 1280 x 1024p at 75Hz 1280 x 1024p at 85Hz 1600 x 1200p at 60Hz 1920 x 1080p at 60Hz 1920 x 1200p at 60Hz with reduced blanking Note 1366x1024 60H...

Страница 53: ...eased before the 2 key is pressed To send the command Scroll lock 1 Enter with a 500ms delay you should use the following Scr 500 1 Ent Main control keys see Using abbreviations Backspace Tab Return E...

Страница 54: ...s movement because each unit is fully informed of each user s precise access rights Port host addressing using Adder Port Direct When adding new computers to the Hosts list the option Add entry for un...

Страница 55: ...r adapter with a manufacturer approved type only Do not use the power adapter if the power adapter case becomes damaged cracked or broken or if you suspect that it is not operating properly If you use...

Страница 56: ...F THIRD PARTY RIGHTS AND FITNESS FOR PARTICULAR PURPOSE 4 Limitation on Liability UNDER NO CIRCUMSTANCES SHALL REALVNC BE LIABLE FOR ANY CONSEQUENTIAL INDIRECT OR INCIDENTAL DAMAGES WHATSOEVER INCLUDI...

Страница 57: ...ween the equipment and the receiver c Connect the equipment to an outlet on a circuit different from that to which the receiver is connected d Consult the supplier or an experienced radio TV technicia...

Страница 58: ...ctxd com Documentation by 2012 Adder Technology Limited All trademarks are acknowledged Part No MAN ALD IPEPS ADDER Release 1 0c Web www adder com Contact www adder com contact details Support forum a...

Страница 59: ...7 38 IP network mask 37 IP network port 4 connecting 8 IPv4 48 IPv6 48 K Keyboard codes sending 19 Keyboard Control 19 Keyboard layout remote setting 33 KVMADMIN utility 50 L Local network connection...

Страница 60: ...te setting 33 User accounts 31 User configuration 31 32 Username remote logon 11 V Video settings 18 19 Viewer window 13 menu bar editing 16 Virtual Media 3 VNC port remote setting 37 38 when altered...

Отзывы: