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Atop Industrial Managed Ethernet Switch
EH7510
User Manual V 1.0

2.8.3 IGMP

Fig. 2.36

Table 2.22

Label

Description

Factory

Default

IGMP Snooping

Choose to enable IGMP snooping.
To enable IGMP snooping, GMRP must be disabled

Disabled

IGMP Proxy

Choose to enable IGMP snooping. See note below.

Disabled

IGMP Fast-leave

Choose to enable IGMP Fast-leave. See note below.

Disabled

Router's IP

Display the multicast router’s IP address.

Router's Port

Display the port that is connected to multicast router.

*NOTE:

IGMP Proxy:

works as an intermediate server; when it receives a query message from the

router; it sends a report message to the router port. When it receives a report message

from a device in a new group, it sends a report message back to the router port. When it

receives a leave message from a device which is the only one in the group, it sends a

leave message to the router port and removes the device. Proxy is like a middle man that

handles information in between routers and computers.

Summary of Contents for EH7510

Page 1: ...EH7510 Industrial Managed Ethernet Switch User Manual Version 1 0 October 2011 TEL 7 812 331 75 76 8 800 555 75 76 http www euromobile ru info euroml ru...

Page 2: ...s not to be reproduced copied disclosed transmitted stored in a retrieval system or translated into any human or computer language in any form by any means in whole or in part without the prior explic...

Page 3: ...Management Basics 6 2 1 1 Default Settings 6 2 1 2 Login Process and Main Window Interface 6 2 2 Information 8 2 2 1 Basic 8 2 2 2 Console 9 2 2 3 Power Status 9 2 2 4 Protocol Status 10 2 3 Administr...

Page 4: ...le 38 2 8 2 Static IP Multicast 39 2 8 3 IGMP 41 2 8 4 IGMP Statistics 42 2 9 SNMP 43 2 9 1 Community Strings 44 2 9 2 Trap Receivers 45 2 9 3 SNMPv3 Users 45 2 10 Spanning Tree 46 2 10 1 Spanning Tre...

Page 5: ...g 86 2 17 1 Syslog 86 2 17 2 Event Log 87 2 18 System 89 2 18 1 Backup Restore 89 2 18 2 Firmware Upgrade 90 2 18 3 TFTP 91 2 18 4 Factory Default 92 2 18 5 Reboot 93 Chapter 3 Configuring with a Seri...

Page 6: ...Atop Industrial Managed Ethernet Switch EH7510 User Manual V 1 0 vi Glossary 113...

Page 7: ...r Manual This manual is to be used by qualified network personnel or support technicians who are familiar with network operations it might be useful for system programmers or network planners as well...

Page 8: ...ice environment However an industrial switch like EH7510 is designed to perform in harsh industrial environments i e extreme temperature high humidity dusty air potential high impact or the presence o...

Page 9: ...ng Three User Friendly Interfaces Supported Web browser Telnet Console Serial Console SNMP v1 v2 v3 Supported with MD5 Authentication and DES encryption RSTP Support QoS Traffic Regulation Supported I...

Page 10: ...2 x Fiber ports Port 9 10 1 x Serial Console Port 1x4 DIP switch LED indicators 1 x Reset button Caution An approved Optical transceiver should be chosen to plug into the slot Never install or work on...

Page 11: ...o 95 Note for UL policy the maximum operating temperature is 60 C and the human body can tolerate a maximum of 70 C 1 6 LED Indicators Port LED Green Light Steady Link up Blinking Data transmitting Or...

Page 12: ...ased Management Basics Users can access EH7510 easily by their web browsers Internet Explorer 7 0 and Mozilla Firefox 3 5 7 or later versions recommended We will proceed to use a web browser to introd...

Page 13: ...r the login process the main interface will show up which should look as Fig 2 2 The main menu left side of the screen provides the links at the top level of the menu hierarchy and allows them to be e...

Page 14: ...ces connected to the network they are divided into four sections 2 2 1 Basic An introduction to the equipment and net is done in this section Fig 2 3 Fig 2 3 Table 2 1 Label Description Description De...

Page 15: ...nfiguring the switch However there is a specific page for the serial console method The Console option is only for serial console it indicates the connection parameters related to the method Fig 2 4 2...

Page 16: ...EH7510 User Manual V 1 0 10 2 2 4 Protocol Status Reports an overall status of each protocol while users can view status all at once here detailed explanations of each protocol and methods will be pro...

Page 17: ...s in the network Fig 2 7 Fig 2 7 Table 2 2 Label Description Factory Default System Name Specifies a particular role or application of different switches The name entered here will also be shown in Sw...

Page 18: ...sers can make changes to assure overall system security Fig 2 8 Fig 2 8 Table 2 3 Label Description Factory Default Manager s User name User s Name Max 15 Characters NULL Manager s Password Password M...

Page 19: ...e to enable DHCP Dynamic Host Configuration Protocol here This function can obtain an IP address automatically it provides automatic configuration and eliminates the need for intervention by the admin...

Page 20: ...e data delivery more reliable for forwarding functions users can set up an ageing time to avoid the case that a MAC address cannot be found Fig 2 10 Filter Functions Storm Filter Function For this fun...

Page 21: ...ription Factory Default MAC Address Ageing Time Choose to enable MAC Address ageing time function If enabled when an entry reaches its aging time it will be cleared from the switch Enabling this funct...

Page 22: ...his mode guarantees that traffic in the highest queue always flows first QoS Type 802 1p CoS IEEE standard of layer 2 marking scheme It specifies a priority value between 0 and 7 that can be used by Q...

Page 23: ...1 1 packets Low priority Q2 4 packets Median priority Q3 8 packets High priority For example Q3 has the highest priority and it carries 8 packets while Q0 has the lowest priority and it carries 2 pack...

Page 24: ...ifferent priority queues Table 2 7 Label Description Factory Default Level Sets the mapping table of different ToS to 4 distinct output queues which are Q0 lowest Q1 los Q2 median and Q3 highest ToS 0...

Page 25: ...GMP snooping is enabled the port mirroring function is disabled Table 2 8 Label Description Factory Default Monitored direction Select the monitoring direction Disable disable port monitoring Input da...

Page 26: ...ight saving Offset decide how many hours to be shifted forward backward when daylight saving time begins and ends See note below None Enable SNTP Enables SNTP function See note below Unchecked NTP Ser...

Page 27: ...s is a serial communication protocol which allows communication between devices to be connected to the same network It is used to connect a supervising computer to the network and thus control all the...

Page 28: ...l V 1 0 22 3 Set Address to a desired value between 250 and 256 Fig 2 17 4 Correct Value HEX has to be selected corresponding to Address entered above As in this example Result shows Illegal Data Valu...

Page 29: ...Atop Industrial Managed Ethernet Switch EH7510 User Manual V 1 0 23 5 If a correct Value HEX is selected the process will be completed successfully Fig 2 19...

Page 30: ...3 8 PTP Setting The Precision Time Protocol PTP is a high precision time protocol It is for precise synchronization of clocks on a local area network by measurement and control systems Fig 2 20 on the...

Page 31: ...o IEEE 1588 2008 Table 5 for definitions allowed values and interpretation 248 priority 1 To set the clock priority 1 PTP version 2 The lower values take precedence to be selected as the master clock...

Page 32: ...On or Off Link condition Up or down Negotiation type Auto or Force Speed unit Mbps Duplex Flow Control Rate Control Security 802 1X port status NOTE Negotiation Force specifies forcing the speed and d...

Page 33: ...nicast packets transmitted Tx Error Number of outbound packets which are chosen to be discarded even though no errors have been detected to prevent them being transmitted Tx Rate Kbps Speed of transmi...

Page 34: ...0 only Mbps Port1 Port8 100Mbps Port9 Port10 1000Mbps Duplex Select either Half or Full Duplex See note below All ports are Full Duplex mode Flow Control Either on or off Flow Control to avoid packet...

Page 35: ...er group The advantage of this function gives the user more flexibility while setting up network connections the bandwidth of a link can be doubled or tripled Also if one link is disconnected the rema...

Page 36: ...s which trunk group this port belongs to LACP Partner Indicates whether LACP Partner information is received at the corresponding port 2 5 2 Trunking Fig 2 25 There are four steps to setup a trunking...

Page 37: ...hat carry multicast traffic this section will explain what Multicast and Unicast are as well as their benefits Fig 2 26 Unicast This type of transmission sends messages to a single network destination...

Page 38: ...d as on Fig 2 27 Unicast would be shown first followed by Multicast MAC address Table 2 15 Label Description Unicast Multicast MAC Displays MAC address VLAN Displays VLAN ID Type Displays whether the...

Page 39: ...cide which ports belong to its corresponding address use Ctrl to add more than one port Table 2 16 Label Description MAC address Enter MAC address manually VLAN Specify VLAN ID that this static MAC be...

Page 40: ...alues GARP is used by two applications GARP VLAN Registration Protocol GVRP and GARP Multicast Registration Protocol GMRP GVRP provides a method to share VLAN information dynamically and configure the...

Page 41: ...ows how to configure GARP timer Table 2 19 Label Description Factory Default Join Timer Indicate the GARP Join timer in 0 65535 seconds 20 seconds Leave Timer Indicate the GARP Leave timer in 0 65535...

Page 42: ...GVRP Fig 2 32 Fig 2 32 indicates GVRP configurations and functions When GVRP is enabled the switch which is an end node of a network needs only to add static VLANs locally Others switches dynamically...

Page 43: ...s have already define trunking group e g Trk1 it can also be selected to be enabled All ports are disabled Clear Statistics Clears all GVRP statistics counts Clears the record 2 7 4 GMRP Fig 2 33 The...

Page 44: ...ernet Group Management Protocol is used on IP networks to establish multicast group memberships It operates above the network layer of OSI One of the most important features related to this protocol i...

Page 45: ...Fig 2 34 b Example This option shows 1 The IGMP membership group table 2 Static and dynamic IP Multicast table The dynamic join port is added by the switch s IGMP snooping function The static join por...

Page 46: ...should key the IP in the IP Multicast Address column and click the corresponding port s number in the source column Click the Ctrl key on the keyboard to add more ports Then click on the button the IP...

Page 47: ...the multicast router s IP address Router s Port Display the port that is connected to multicast router NOTE IGMP Proxy works as an intermediate server when it receives a query message from the router...

Page 48: ...aged Ethernet Switch EH7510 User Manual V 1 0 42 Fig 2 37 IGMP Fast leave When a leave message is received the ports in the group will be immediately removed from the IP multicast entry 2 8 4 IGMP Sta...

Page 49: ...9 SNMP This section has four categories which are SNMP Community Strings Trap Receivers SNMP V3 Users SNMP Simple Network Management Protocol is a protocol for managing devices on IP networks It expo...

Page 50: ...all only or read write all For example in our default setting the SNMP agent can access all objects with read all only permissions using the string public Another example is that the string private h...

Page 51: ...a trap function that allows an SNMP agent to notify the network management system in case of a significant event this allows users to configure SNMP Trap setting Fig 2 39 b Fig 2 39 b Trap Receiver Ex...

Page 52: ...to prevent switching loops and ensuring broadcast radiation A switching loop occurs in network when there are multiple connections between two network switches or two ports The loop creates broadcast...

Page 53: ...Atop Industrial Managed Ethernet Switch EH7510 User Manual V 1 0 47 2 10 1 Spanning Tree Fig 2 40 Fig 2 40 shows how to configure the Spanning Tree and indicates the parameters status...

Page 54: ...s 15 Root Priority Indicates the current root priority value Dependant Root MAC Address Indicates the current root MAC address Dependant Root Path Cost Indication of cost Higher cost means less suitab...

Page 55: ...ceived from connected devices then Des Cost Designated Root cost for a packet to travel from a port to the root in the current Spanning Tree Des Port Designated Port port designated to send the best B...

Page 56: ...ction Uncheck 2 11 VLAN A Virtual Lane Area Network VLAN is a group of devices that can be located anywhere on a network but all devices in the group have connection with others as they re physically...

Page 57: ...Industrial Managed Ethernet Switch EH7510 User Manual V 1 0 51 Fig 2 42 There are two common approaches to assigning VLAN memberships Port based VLAN Tagging based 802 1q VLAN EH7510 supports both of...

Page 58: ...VLAN to that specific port if users change the port connected they must manually make a new port VLAN assignment for this new connection Steps to set up Port Based VLAN 1 On VLAN Mode page select Port...

Page 59: ...Based mode Table 2 30 Label Description Factory Default Group ID Indicates the VLAN Group ID Group ID 1 Member Adds specific ports to specific group Port 1 Port10 NOTE VLAN Table VLAN Settings and VL...

Page 60: ...rioritization information and a VID of 0 When a switch receives a tagged frame it extracts the VID and forwards the frame to other ports in the same VLAN Fig 2 43 a and Fig 2 43 b Table 2 31 Label Des...

Page 61: ...ged Displayed The outgoing packet is tagged from this port Undisplayed The outgoing packet is untagged from this port This entry is created by user Dependant Dynamic Member Ports Indicates the member...

Page 62: ...e range 2 4094 Dependant Member Ports Configures the ports to this specific VID All Ports Tagged Ports Configures the ports that outgoing packet is tagged or untagged Selected The outgoing packet is t...

Page 63: ...s through a port it is assigned to the port s PVID Fig 2 46 Fig 2 46 displays the ports default VLAN ID the lower portion allows the user to configure the port s PVID Table 2 34 Label Description Fact...

Page 64: ...example set Port 1 2 and 3 into a VLAN group name VLAN 2 with VID 2 and Port 3 are tagged Fig 2 47 Users should follow below settings Table 2 35 Label Setting Name VLAN 2 VID 2 Member Ports Choice Po...

Page 65: ...LAN or WLAN This protocol restricts unauthorized clients from connecting to a LAN through ports that are open to the Internet The authentication basically involves three parties Fig 2 49 a supplicant...

Page 66: ...k until the supplicant s identity has been validated and authorized With 802 1X authentication a supplicant and an authenticator exchange EAP Extensible Authentication Protocol an authentication frame...

Page 67: ...emove Option to remove the corresponding MAC address Add Click to add a MAC address VLAN Specify the corresponding VLAN address to MAC address The procedure for adding a MAC address is simple just typ...

Page 68: ...s Server IP Set Radius server IP address 192 168 200 99 Server Port Set radius server port number The range is 1024 65535 1812 Accounting Port Set radius accounting port number The range is 1024 65535...

Page 69: ...packet Range from 10 to 65535 seconds 15 Supplicant Timeout Waiting time for the supplicant response to the authentication server s EAP packet Range from 10 to 300 seconds 30 Server Timeout Waiting ti...

Page 70: ...ig 2 53 802 1x Port information shown in Fig 2 53 Table 2 39 Label Description Factory Default Port Set specific ports to be configured Option Mode Choose from FU specifies forced unauthorized FA spec...

Page 71: ...iA ring or Compatible Ring via DIP Switches instead of modifying configuration on web browser Fig 2 54 shows the current DIP Switch s status the bottom portion allows the user to modify settings Tabl...

Page 72: ...witch 2 OFF Slave is selected o DIP Switch 3 4 OFF OFF ERPS is selected DIP switch 1 must be set to the ON position to enable DIP switches 2 3 and 4 If DIP switch 1 is set to the OFF position then DIP...

Page 73: ...PS enabled All rings in normal condition ERPS enabled Off On No RPL owner ERPS disabled All rings in normal condition ERPS enabled Off Off No RPL owner ERPS disabled ERPS disabled Off Blinking No RPL...

Page 74: ...y flow on all but one of the ring links at any time This particular link is called Ring Protection Link RPL A control message called R APS coordinates the activities of switching on off the RPL Under...

Page 75: ...cket to peer ring ports in order to determine whether the link path etc wireless bridge is failure or alive If peer ring port cannot receive heartbeat packets over 3 packets the ring port will enter p...

Page 76: ...lower protection time Range from 0 to 12 minutes 0 Holdoff Timer Set the holdoff time of the ring Range from 0 to 10000 milliseconds 0 Guard Timer Set the guard time of the ring Range from 0 to 2000 m...

Page 77: ...H7510 A and EH7510 B We will use Port 7 and Port 8 on both EH7510 for redundancy 2 Connect EH7510 A and EH7510 B to the network or PC so you can access them For simplicity you can use Port 1 for Web c...

Page 78: ...like the following Fig 2 62 7 Connect EH7510 A s Port 7 to EH7510 B s Port 8 Connect EH7510 A s Port 8 to EH7510 B s Port 7 like cross over for the redundancy port 8 If everything is setup properly yo...

Page 79: ...g loops can be avoided by guarant Fig 2 64 2 13 3 iA Ring EH7510 is designed to be compatible with iA Ring protocol for providing better network reliability and faster recovery time for redundant ring...

Page 80: ...rol and ERPS first in order to enable configure iA Ring parameters on a web browser Table 2 48 Label Description Factory Default iA Ring Enable iA Ring or disable iA Ring Disabled Ring Master Enabled...

Page 81: ...ontact Atop Fig 2 67 Fig 2 67 shows how to set the Compatible Ring redundancy protocol users should disable DIP Switch Control and ERPS first in order to enable configure Compatible Ring parameters on...

Page 82: ...ring This configuration is for access between 2 points in this example each point is connected to the Access Points by an Ethernet LAN line and these in turn are connected by Wireless Bridges 1 and 2...

Page 83: ...ation Status Shows whether the device s state is normal or protected Dependant 1 st Ring Port Status Displays the 1 st ring port s status Forwarding 2 nd Ring Port Status Displays the 2 nd ring port s...

Page 84: ...ected network links using this standard mechanism Fig 2 70 Fig 2 70 allows users to have options for enabling or disabling the LLDP as well as setting LLDP transition parameters This function should b...

Page 85: ...ption Port Indicates particular port number of the switch Chassis ID Indicates the identity of the neighbor of this particular port Port ID Indicates the port number of this neighbor Port Description...

Page 86: ...of providing first moment alarm messages to system administrators This means network administrators can be informed instantaneously when accidents happen EH7510 uses email and relay output to provide...

Page 87: ...2 54 b Label Description Factory Default System log event Disable Disable power status detection 0 LOG_EMERG Enable log level 0 7 detection 1 LOG_ALERT Enable log level 1 7 detection 2 LOG_CRIT Enabl...

Page 88: ...vents as shown in Fig 2 73 b as an example A short alarm message on the top portion of the web browser interface users can click the Alarms to hyperlink to the Warning Events web page For example the...

Page 89: ...ll Warning Events Clears all warning events that are displayed 2 15 3 SMTP Settings Simple Mail Transfer Protocol SMTP is an internet standard for email transmission across IP networks In case any war...

Page 90: ...Username Set the user name or account name to login Max 31 characters NULL Password Set the account password for login Max 15 characters NULL Recipient E mail Address 1 Set the first receiver s E mail...

Page 91: ...ser Manual V 1 0 85 2 16 1 Ping Fig 2 75 a Fig 2 75 b Users can assign IP address or domain name to verify the network connectivity After typing the IP address name please click button to start the pi...

Page 92: ...name instead of IP address they should assign DNS first This can be done through Administration IP Settings An example is shown below Fig 2 76 2 17 System Log This function contains two pages Syslog...

Page 93: ...level to determine what events to be displayed on the next page Event Log Level selected is inclusive For example if 3 Log_ERR is selected all 0 1 2 and 3 levels will be implied 3 LOG_ERR Enable Syslo...

Page 94: ...es the system date of this event has occurred Time Indicates the system time of this event has occurred Startup Time Indicates how long the system has been up since this event occurred Level Indicates...

Page 95: ...User Manual V 1 0 89 2 18 System This function includes the following Backup restore Firmware upgrade TFTP Factory default Reboot 2 18 1 Backup Restore Backup Download the current EH7510 configuratio...

Page 96: ...configuration on EH7510 Fig 2 80 Notes There re two options which can store the username password or network configuration it will prevent the user who can t login due to a different username passwor...

Page 97: ...2 18 3 TFTP Trivial File Transfer Protocol This protocol is designed to be small and easy to implement EH7510 allows users to upload configuration settings to a TFTP server and users can also downloa...

Page 98: ...er Table 2 59 Label Description Factory Default TFTP Server IP Address Sets the IP address or remote TFTP server domain name NULL Configuration File Name Type in the name of the file to be uploaded or...

Page 99: ...Atop Industrial Managed Ethernet Switch EH7510 User Manual V 1 0 93 2 18 5 Reboot EH7510 provides an easy reboot function that only requires one click Fig 2 84...

Page 100: ...s method is similar to the web browser one The options are the same so users can take the same procedures as those examples in Chapter 2 3 1 Serial Console Setup After users install Tera Term perform...

Page 101: ...tings Operator and manager privileges are initially entered without the need of passwords but a user may assign password to both the operator and manager If passwords are assigned then when a user att...

Page 102: ...and screen prompt Users may enter at any command mode and the CLI will return possible commands at that point along with some description of the keywords Switch config ip address Set IP address and s...

Page 103: ...y List last history commands Hostname string Set switch name no hostname Reset the switch name to factory default setting no password manager operator all Set or remove username and password for manag...

Page 104: ...ows DHCP status ip address ip addr ip mask Set IP address and subnet mask Ip default gateway ip addr Set the gateway IP address show ip Show IP address subnet mask and the default gateway Boot Use thi...

Page 105: ...Spanning tree port path cost 0 2E8 port Set path cost to specific port Spanning tree port priority 0 240 port Set priority to specific port Show spanning tree Show spanning tree information Show span...

Page 106: ...work are connected this chapter illustrates how these two tools can be used effectively 4 1 SwitchView SwitchView shows Model name IP address MAC address and other information of devices in the networ...

Page 107: ...using SwitchView there are kernel firmwares and application firmwares to be updated this can be done easily in 3 steps 1 In SwitchView click on 2 Choose either Kernel of AP application firmware and fi...

Page 108: ...opolog Diagram is mainly designed for managed switches all other devices will be tagged as unknown This tool shows the MAC and IP address of a device and shows which ports of this device are connected...

Page 109: ...rd 3 Hi byte d Word 3 Lo byte Word 4 Hi byte S Word 4 Lo byte w Word 5 Hi byte i Word 5 Lo byte t Word 6 Hi byte c Word 6 Lo byte h Word 7 Hi byte Word 7 Lo byte E Word 8 Hi byte H Word 8 Lo byte 7 Wo...

Page 110: ...0x0001 1 0x0002 2 0x0034 52 1 word R Flow Control 0x0000 None Power Information 0x0040 64 1 word R Power Status Power 1 OK Hi byte 0x01 Power 1 Fail Hi byte 0x00 Power 2 OK Low byte 0x01 Power 2 Fail...

Page 111: ...1 word W Clear Relay Alarm 0x0001 Do clear action 0x0102 258 1 word W Clear All Warning Events 0x0001 Do clear action Warning Events Information 0x0200 512 64 words R 1st Warning Event Information 0x0...

Page 112: ...Port 6 Status Word 3 Hi byte Port 7 Status Word 3 Lo byte Port 8 Status Word 4 Hi byte Port 9 Status Word 4 Lo byte Port 10 Status 0x1060 4192 5 words R Port Duplex Status half duplex 0x00 Status ful...

Page 113: ...1024 Kbps 0x400 Word 0 of Port 1 0x0000 Word 1 of Port 1 0x0400 Word 0 1 Port 1 TX Rate Word 2 3 Port 2 TX Rate Word 4 5 Port 3 TX Rate Word 6 7 Port 4 TX Rate Word 8 9 Port 5 TX Rate Word 10 11 Port...

Page 114: ...E Word 2 of Port 1 0xEEE1 Word 3 of Port 1 0xFFFF Word 0 1 2 3 Port 1 good packets Word 4 5 6 7 Port 2 good packets Word 8 9 10 11 Port 3 good packets Word 12 13 14 15 Port 4 good packets Word 16 17 1...

Page 115: ...s Word 32 33 34 35 Port 9 good packets Word 36 37 38 39 Port 10 good packets Redundancy Information 0x2000 8192 1 word R Redundancy Protocol 0x0000 None 0x0001 STP 0x0002 RSTP 0x0004 ERPS 0x0008 iA Ri...

Page 116: ...E Trk3 0x000F Virtual Channel 0x00FF VLAN ID exist but no West Port be Selected 0xFFFF ERPS Not Enable Word 0 1st VLAN ID West Port Word 1 2st VLAN ID West Port Word 2 3st VLAN ID West Port Word 3 4st...

Page 117: ...1 Forwarding 0x0002 Blocking 0x0003 Signal Fail Blocking 0x000F Virtual Channel 0x00FF VLAN ID exist but no Eest Port be Selected 0xFFFF ERPS Not Enable Word 0 1st VLAN ID East Port Status Word 1 2st...

Page 118: ...8961 1 word R 1st Ring Port Ex 1st Ring Port Port 2 Word 0 0x0002 0x0001 Port 1 0x0002 Port 2 0x000A Port 10 0xFFFF iA Ring not enable 0x2302 8962 1 word R 2st Ring Port Ex 2st Ring Port Port 3 Word 0...

Page 119: ...packets not going to a local partner are sent to the gateway The gateway takes care of communication with remote network IEEE Institute of Electrical and Electronics Engineers IGMP Internet Group Man...

Page 120: ...rvice RADIUS Remote Authentication Dial In User Service Authentication and monitoring protocol on the application level for authentication integrity protection and accounting for network access Server...

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