3Com Switch 4800G 24-Port

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Serving as a Access Layer Device 25

Figure 2 Application of Switch 4800G at access layer

Core/Aggregation

Access

S5600-HI

S5600-PWR-HI

Main Page

Default Chapter1
- Default Chapter1
  - Configuration Guide1
  - Table of Contents3
- Bout this Guide21
  - Conventions21
  - Related Documentation21
- Product23
- Networking23
  - Preface23
Logging I Ethernet Switch27
- N to an27
- Logging in to an Ethernet Switch27
- Introduction to the User Interface27
Logging I N T Hrough the31
- Introduction31
- Setting up the Connection to the Console Port31
- Console Port Login Configuration33
- Console Port Login Configuration with Authentication Mode Being None35
- Console Port Login Configuration with Authentication Mode Being Password38
- Console Port Login Configuration with Authentication Mode Being Scheme41
Logging I Nthrough Telnet47
- Introduction47
- Telnet Configuration with Authentication Mode Being None49
- Telnet Configuration with Authentication Mode Being Password52
- Telnet Configuration with Authentication Mode Being Scheme54
- Telnet Connection Establishment59
Ogging in Using Modem63
- Introduction63
- Configuration on the Administrator Side63
- Configuration on the Switch Side63
- Modem Connection Establishment64
- Logging in67
- Logging in through Nms71
- CONFIGURING SOURCE IP ADDRESS for TELNET SERVICE PACKETS Overview73
  - Displaying the Source IP Address/Interface Specified for Telnet Packets74
- Controlling Login Sers75
- Vlan C83
Voice Vlan Configuration99
- Introduction to Voice VLAN99
- Configuring Voice VLAN101
- Displaying and Maintaining Voice VLAN103
- Voice VLAN Configuration Examples103
Gvrp Configuration109
- Introduction to GVRP109
- GVRP Configuration Task List112
- Configuring GVRP112
- Displaying and Maintaining GVRP114
- GVRP Configuration Examples114
Ip Addressing121
- IP Addressing Overview121
- Configuring IP Addresses123
- Displaying and Maintaining IP Addressing126
Ip Performance127
- IP Performance Overview127
- Enabling Reception and Forwarding of Directed Broadcasts to a Directly Connected Network127
- Configuring TCP Attributes129
- Configuring ICMP to Send Error Packets130
- Displaying and Maintaining IP Performance132
Qin133
- Introduction to Qinq133
- Configuring Basic Qinq135
- Configuring Selective Qinq136
- Configuring the TPID Value to be Carried in VLAN Tags137
- Qinq Configuration Example137
Bpdu Tunneling141
- Introduction to BPDU Tunneling141
- Configuring BPDU Isolation142
- Configuring BPDU Transparent Transmission143
- Configuring Destination Multicast MAC Address for BPDU Tunnel Frames144
- BPDU Tunneling Configuration Example144
- Network Diagram145
Port147
- Ethernet Port Configuration147
- Maintaining and Displaying an Ethernet Port156
Port157
- Introduction to Port Isolation157
- Configuring an Isolation Group157
- Displaying Isolation Groups158
- Port Isolation Configuration Example158
Link Aggregation Overview161
- Link Aggregation161
- Approaches to Link Aggregation162
- Load Sharing in a Link Aggregation Group165
- Service Loop Group165
- Aggregation Port Group166
Link167
- Configuring Link Aggregation167
- Displaying and Maintaining Link Aggregation169
- Link Aggregation Configuration Example170
Mac Address Table Management Configuration173
- Introduction to MAC Address Table173
- Configuring MAC Address Table Management174
- Displaying and Maintaining MAC Address Table Management176
- MAC Address Table Management Configuration Example176
Ip Source177
- IP Source Guard Overview177
- Configuring a Static Binding Entry177
- Configuring Dynamic Binding Function178
- Displaying IP Source Guard178
- IP Source Guard Configuration Examples178
- Troubleshooting182
- Overview183
22 Dldp C Onfiguration190
- DLDP Configuration Task List190
- Displaying and Maintaining DLDP193
- DLDP Configuration Example193
- Troubleshooting195
23 Mstp C Onfiguration197
- MSTP Overview197
- Configuration Task List212
- Configuring the Root Bridge213
- Configuring Leaf Nodes224
- Performing Mcheck228
- Configuring Digest Snooping229
- Configuring no Agreement Check230
- Configuring Protection Functions233
- Displaying and Maintaining MSTP235
- MSTP Configuration Example236
Ip Routing Overview241
- IP Routing and Routing Table241
- Routing Protocol Overview243
- Displaying and Maintaining a Routing Table246
Gr Overview247
- Introduction to Graceful Restart247
- Basic Concepts in Graceful Restart247
- Graceful Restart Communication Procedure248
- Graceful Restart Mechanism for Several Commonly Used Protocols250
Static251
- Introduction251
- Configuring a Static Route252
- Detecting Reachability of the Static Route's Nexthop253
- Displaying and Maintaining Static Routes254
- Configuration Example254
27 Rip Configuration257
- RIP Overview257
- Configuring RIP Basic Functions261
- Configuring RIP Route Control263
- Configuring RIP Network Optimization266
- Displaying and Maintaining RIP269
- RIP Configuration Examples269
- Troubleshooting RIP271
28 Ospf Configuration273
- Introduction to OSPF273
- OSPF Configuration Task List292
- Configuring OSPF Basic Functions293
- Configuring OSPF Area Parameters294
- Configuring OSPF Network Types295
- Configuring OSPF Route Control297
- Configuring OSPF Network Optimization300
- Configuring OSPF Graceful Restart306
- Displaying and Maintaining OSPF309
- OSPF Configuration Examples309
  - Verify the Configuration311
  - Network Requirements322
- Troubleshooting OSPF Configuration323
29 Is-Is Configuration325
- IS-IS Overview325
- IS-IS Configuration Task List340
- Configuring IS-IS Basic Functions341
- Configuring IS-IS Routing Information Control342
- Tuning and Optimizing IS-IS Network346
- Configuring IS-IS GR352
- Displaying and Maintaining IS-IS353
- IS-IS Configuration Example354
30 Bgp Configuration365
- BGP Overview365
- BGP Configuration Task List380
- Configuring BGP Basic Functions381
- Controlling Route Distribution and Reception383
- Configuring BGP Route Attributes386
- Tuning and Optimizing BGP Networks388
- Configuring a Large Scale BGP Network390
- Configuring BGP GR392
- Displaying and Maintaining BGP394
- BGP Configuration Examples395
- Bgp Community Configuration403
- Troubleshooting BGP413
Routing415
- Introduction to Routing Policy415
- Routing Policy Configuration Task List417
- Defining Filtering Lists417
- Configuring a Routing Policy419
- Displaying and Maintaining the Routing Policy422
- Routing Policy Configuration Example422
- Troubleshooting Routing Policy Configuration425
Ip V 6 Static427
- Introduction to Ipv6 Static Routing427
- Configuring an Ipv6 Static Route427
- Displaying and Maintaining Ipv6 Static Routes428
- Ipv6 Static Routing Configuration Example428
Ip V 6 Rip Ng431
- Introduction to Ripng431
- Configuring Ripng Basic Functions433
- Configuring Ripng Route Control434
- Tuning and Optimizing the Ripng Network436
- Displaying and Maintaining Ripng438
- Ripng Configuration Example438
Ipv 6 Ospf443
- Introduction to Ospfv3443
- Ipv6 Ospfv3 Configuration Task List445
- Configuring Ospfv3 Basic Functions446
- Configuring Ospfv3 Area Parameters446
- Configuring Ospfv3 Routing Information Management447
- Tuning and Optimizing an Ospfv3 Network450
- Displaying and Maintaining Ospfv3452
- Ospfv3 Configuration Examples453
  - Troubleshooting Ospfv3 Configuration459
Ipv461
- Introduction to Ipv6 IS-IS461
- Configuring Ipv6 IS-IS Basic Functions461
- Configuring Ipv6 IS-IS Routing Information Control462
- Displaying and Maintaining Ipv6 IS-IS463
- Ipv6 IS-IS Configuration Example464
Ipv467
- Ipv6 BGP Overview467
- Configuration Task List468
- Configuring Ipv6 BGP Basic Functions469
- Controlling Route Distribution and Reception471
- Configuring Ipv6 BGP Route Attributes474
- Tuning and Optimizing Ipv6 BGP Networks476
- Configuring a Large Scale Ipv6 BGP Network478
- Displaying and Maintaining Ipv6 BGP Configuration482
- Ipv6 BGP Configuration Examples483
- Troubleshooting Ipv6 BGP Configuration486
Routing489
- Introduction to Routing Policy489
- Defining Filtering Lists490
- Configuring a Routing Policy492
- Displaying and Maintaining the Routing Policy495
- Routing Policy Configuration Example495
- Troubleshooting Routing Policy Configuration497
Ip V 6 Basics499
- Ipv6 Overview499
- Ipv6 Basics Configuration Task List508
- Configuring Basic Ipv6 Functions508
- Configuring Ipv6 NDP510
- Configuring PMTU Discovery513
- Configuring Ipv6 TCP Properties514
- Configuring Icmpv6 Packet Sending514
- Configuring Ipv6 DNS515
- Displaying and Maintaining Ipv6 Basics Configuration516
- Ipv6 Configuration Example517
- Troubleshooting Ipv6 Basics Configuration520
Dual521
- Dual Stack Overview521
- Configuring Dual Stack521
Tunneling523
- Introduction to Tunneling523
- Tunneling Configuration Task List526
- Configuring Ipv6 Manual Tunnel526
- Configuring 6To4 Tunnel530
- Configuring ISATAP Tunnel535
- Displaying and Maintaining Tunneling Configuration538
- Troubleshooting Tunneling Configuration538
Multicast Overview541
- Introduction to Multicast541
- Multicast Models544
- Multicast Architecture545
- Multicast Packet Forwarding Mechanism550
Igmp Snooping553
- IGMP Snooping Overview553
- IGMP Snooping Configuration Task List558
- Configuring Basic Functions of IGMP Snooping559
- Configuring IGMP Snooping Port Functions560
- Configuring IGMP Snooping Querier563
- Configuring an IGMP Snooping Policy565
- Displaying and Maintaining IGMP Snooping569
- IGMP Snooping Configuration Examples570
- Troubleshooting IGMP Snooping Configuration577
43 Mld Snoopingconfiguration579
- MLD Snooping Overview579
- MLD Snooping Configuration Task List583
- Configuring Basic Functions of MLD Snooping584
- Configuring MLD Snooping Port Functions585
- Configuring MLD Snooping Querier589
- Configuring an MLD Snooping Policy591
- Displaying and Maintaining MLD Snooping595
- MLD Snooping Configuration Examples596
- Troubleshooting MLD Snooping602
44 Multicastvlan Configuration605
- Introduction to Multicast VLAN605
- Configuring Multicast VLAN605
- Displaying and Maintaining Multicast VLAN606
- Multicast VLAN Configuration Example606
  - Configuring Ipv6 Multicast VLAN609
  - Introduction to Ipv6 Multicast VLAN609
Ipv6 Multicast VLAN Configuration Examples610
- Displaying and Maintaining Ipv6 Multicast VLAN610
Igmp C613
- IGMP Overview613
- IGMP Configuration Task List617
- Configuring Basic Functions of IGMP618
- Adjusting IGMP Performance620
- Displaying and Maintaining IGMP623
- IGMP Configuration Example624
- Troubleshooting IGMP626
47 Pim Configuration629
- PIM Overview629
- Configuring PIM-DM641
- Configuring PIM-SM643
- Configuring PIM-SSM652
- Configuring PIM Common Information653
- Displaying and Maintaining PIM658
- PIM Configuration Examples659
- Troubleshooting PIM Configuration669
Msdp C673
- MSDP Overview673
- MSDP Configuration Task List679
- Configuring Basic Functions of MSDP679
- Configuring an MSDP Peer Connection680
- Configuring SA Messages Related Parameters682
- Displaying and Maintaining MSDP685
- MSDP Configuration Examples685
- Troubleshooting MSDP697
Multicast Routing and Forwarding Configuration701
- Multicast Routing and Forwarding Overview701
- Configuration Task List705
- Configuring Multicast Routing and Forwarding706
- Displaying and Maintaining Multicast Routing and Forwarding709
- Configuration Examples709
- Troubleshooting Multicast Routing and Forwarding713
- Configuration713
50 802.1X Configuration715
- 802.1X Overview715
- Configuring 802.1X726
- Configuring a Guest VLAN728
- Displaying and Maintaining 802.1X729
- X Configuration Example729
- Configuration Example731
- Guest VLAN Configuration Example732
- ACL Assignment Configuration Example735
Habp C737
- Introduction to HABP737
- Configuring HABP737
- Displaying and Maintaining HABP738
Mac Authentication Configuration739
- MAC Authentication Overview739
- Related Concepts740
- Configuring MAC Authentication741
- Displaying and Maintaining MAC Authentication742
- MAC Authentication Configuration Examples742
Aaa/Radius/Hwtacacs Configuration747
- AAA/RADIUS/HWTACACS Overview747
- AAA/RADIUS/HWTACACS Configuration Task List756
- Configuring AAA758
- Configuring RADIUS765
- Configuring HWTACACS771
- Displaying and Maintaining AAA/RADIUS/HWTACACS775
- AAA/RADIUS/HWTACACS Configuration Examples776
- Troubleshooting AAA/RADIUS/HWTACACS779
54 Arp Configuration781
- ARP Overview781
- Configuring ARP783
- Configuring Gratuitous ARP785
- Displaying and Maintaining ARP786
55 Proxy Arp Configuration787
- Proxy ARP Overview787
- Enabling Proxy ARP787
- Displaying and Maintaining Proxy ARP787
- Proxy ARP Configuration Examples788
Dhcp Overview791
- Introduction to DHCP791
- DHCP Address Allocation792
- DHCP Message Format793
- DHCP Options794
  - Protocols and Standards796
Dhcp Server797
- Introduction to DHCP Server797
- DHCP Server Configuration Task List799
- Enabling DHCP799
- Enabling the DHCP Server on an Interface799
- Configuring an Address Pool for the DHCP Server800
- Configuring the DHCP Server Security Functions806
- Configuring the Handling Mode for Option808
- Displaying and Maintaining the DHCP Server808
- DHCP Server Configuration Examples809
- Troubleshooting DHCP Server Configuration811
Dhcp Relay813
- Introduction to DHCP Relay Agent813
- Configuration Task List815
- Configuring the DHCP Relay Agent815
- Displaying and Maintaining DHCP Relay Agent Configuration819
- DHCP Relay Agent Configuration Example820
- Troubleshooting DHCP Relay Agent Configuration821
59 Dhcp C Lientconfiguration823
- Introduction to DHCP Client823
- Enabling the DHCP Client on an Interface823
- Displaying and Maintaining the DHCP Client824
- DHCP Client Configuration Example824
Dhcp Snooping825
- DHCP Snooping Overview825
- Configuring DHCP Snooping Basic Functions828
- Configuring DHCP Snooping to Support Option828
- Displaying and Maintaining DHCP Snooping829
- DHCP Snooping Configuration Example829
Bootp Client831
- Introduction to BOOTP Client831
- Configuring an Interface to Dynamically Obtain an IP Address through BOOTP832
- Displaying and Maintaining BOOTP Client Configuration832
- BOOTP Client Configuration Example832
Acl Overview835
- Introduction to ACL835
- Introduction to Ipv4 ACL836
- Introduction to Ipv6 ACL838
Ipv841
- Creating a Time Range841
- Configuring a Basic Ipv4 ACL842
- Configuring an Advanced Ipv4 ACL844
- Configuring an Ethernet Frame Header ACL845
- Copying an Ipv4 ACL846
- Displaying and Maintaining Ipv4 Acls847
- Ipv4 ACL Configuration Example847
Ipv851
- Creating a Time Range851
- Configuring a Basic Ipv6 ACL851
- Configuring an Advanced Ipv6 ACL852
- Copying an Ipv6 ACL854
- Displaying and Maintaining Ipv6 Acls854
- Ipv6 ACL Configuration Example854
65 Qos Overview857
- Introduction857
- Traditional Packet Forwarding Service857
- New Requirements Brought Forth by New Services857
- Occurrence and Influence of Congestion and the Countermeasures858
- Major Traffic Management Techniques859
Traffic Classification , Tp, and Lr Configuration861
- Traffic Classification Overview861
- TP and LR Overview864
- Traffic Evaluation and Token Bucket864
- LR Configuration866
- Displaying and Maintaining LR867
67 Qos Policy Configuration869
- Overview869
- Configuring Qos Policy870
- Introduction to Qos Policies870
- Configuring a Qos Policy870
- Displaying and Maintaining Qos Policy876
Congestion Management877
- Overview877
- Congestion Management Policy877
- Configuring an SP Queue879
69 Priority Mapping883
- Priority Mapping Overview883
- Configuring a Priority Mapping Table884
- Configuring the Port Priority885
- Configuring Port Priority Trust Mode886
- Displaying and Maintaining Priority Mapping887
70 Applying a Qos Policy to Vlans889
- Olicy to Vlan889
- Overview889
- Applying a Qos Policy to Vlans889
- Displaying and Maintaining Qos Policies Applied to Vlans890
- Configuration Examples890
Traffic891
- Overview891
- Configuring Traffic Mirroring891
- Displaying and Maintaining Traffic Mirroring892
- Traffic Mirroring Configuration Examples892
Port895
- Introduction to Port Mirroring895
- Configuring Local Port Mirroring897
- Configuring Remote Port Mirroring898
- Displaying and Maintaining Port Mirroring899
- Port Mirroring Configuration Examples900
Cluster Management Configuration905
- Cluster Management Overview905
- Cluster Configuration Task List911
- Configuring the Management Device912
- Configuring the Member Devices917
- Configuring Access between the Management Device and Its Member Devices918
- Adding a Candidate Device to a Cluster919
- Configuring Advanced Cluster Functions919
- Displaying and Maintaining Cluster Management922
- Cluster Management Configuration Examples922
74 Udp Helper Configuration927
- Introduction to UDP Helper927
- Configuring UDP Helper927
- Displaying and Maintaining UDP Helper928
- UDP Helper Configuration Example928
Snmp Configuration931
- SNMP Overview931
- SNMP Configuration933
- Configuring SNMP Logging935
- Trap Configuration936
- Displaying and Maintaining SNMP937
- SNMP Configuration Example938
- SNMP Logging Configuration Example939
Rmon C941
- RMON Overview941
- Configuring RMON943
- Displaying and Maintaining RMON944
- RMON Configuration Example945
77 Ntp Configuration947
- NTP Overview947
- NTP Configuration Task List953
- Configuring the Operation Modes of NTP953
- Configuring Optional Parameters of NTP956
- Configuring Access-Control Rights957
- Configuring NTP Authentication958
- Displaying and Maintaining NTP960
- NTP Configuration Examples960
78 Dns Configuration971
- DNS Overview971
- Configuring the DNS Client973
- Configuring the DNS Proxy974
- Displaying and Maintaining DNS974
- DNS Configuration Examples975
- Troubleshooting DNS Configuration980
File981
- File System Management981
- Configuration File Management985
- Displaying and Maintaining Device Configuration989
80 Ftp Configuration991
- FTP Overview991
- Configuring the FTP Client992
  - Configuring the FTP Server996
  - Displaying and Maintaining FTP999
81 Tftp Configuration1001
- TFTP Overview1001
- Configuring the TFTP Client1002
- Displaying and Maintaining the TFTP Client1003
- TFTP Client Configuration Example1003
Information1005
- Information Center Overview1005
- Configuring Information Center1009
- Displaying and Maintaining Information Center1015
- Information Center Configuration Examples1015
83 Basic Configurations1021
- Basic Configurations1021
- CLI Features1027
System Aintaining and1033
- System Maintaining and Debugging Overview1033
- System Maintaining and Debugging1035
- System Maintaining Example1036
Device Management1039
- Device Management Overview1039
- Configuring Device Management1039
- Displaying and Maintaining Device Management Configuration1043
- Device Management Configuration Example1043
86 Nqa Configuration1047
- NQA Overview1047
- NQA Configuration Task List1050
- Configuring the NQA Server1050
- Enabling the NQA Client1051
- Creating an NQA Test Group1051
- Configuring an NQA Test Group1051
- Configuring the Collaboration Function1061
- Configuring Trap Delivery1061
- Configuring Optional Parameters Common to an NQA Test Group1062
- Scheduling an NQA Test Group1063
- Displaying and Maintaining NQA1064
- NQA Configuration Examples1064
87 Vrrp C Onfiguration1073
- Introduction to VRRP1073
- Configuring VRRP for Ipv41081
- Configuring VRRP for Ipv61084
- Ipv4-Based VRRP Configuration Examples1088
- Ipv6-Based VRRP Configuration Examples1096
- Troubleshooting VRRP1105
88 Ssh Configuration1107
- SSH2.0 Overview1107
- Configuring the Device as an SSH Server1110
- Configuring the Device as an SSH Client1115
- Displaying and Maintaining SSH1118
- SSH Server Configuration Examples1119
- SSH Client Configuration Examples1125
89 Sftp Service1131
- SFTP Overview1131
- Configuring an SFTP Server1131
- Configuring an SFTP Client1132
- SFTP Configuration Example1135
90 Rrpp C Onfiguration1139
- RRPP Overview1139
- RRPP Configuration Task List1146
- Configuring Master Node1147
- Configuring Transit Node1148
- Configuring Edge Node1149
- Configuring Assistant Edge Node1151
- Displaying and Maintaining RRPP1152
- RRPP Typical Configuration Examples1152
Port1161
- Introduction to Port Security1161
- Port Security Configuration Task List1164
- Enabling Port Security1164
- Setting the Maximum Number of Secure MAC Addresses1165
- Setting the Port Security Mode1165
- Configuring Port Security Features1167
- Configuring Secure MAC Addresses1168
- Ignoring the Authorization Information from the Server1168
- Displaying and Maintaining Port Security1169
- Port Security Configuration Examples1169
- Troubleshooting Port Security1178
92 Lldp Configuration1181
- Introduction to LLDP1181
- LLDP Configuration Tasks List1184
- Performing Basic LLDP Configuration1184
- Configuring LLDP Trap1188
- Displaying and Maintaining LLDP1188
- LLDP Configuration Example1189
93 Poe Configuration1193
- Poe Overview1193
- Poe Configuration Task List1194
- Configuring the Poe Interface1194
- Configuring PD Power Management1196
- Configuring a Power Alarm Threshold for the PSE1197
- Upgrading PSE Processing Software Online1197
- Configuring a PD Disconnection Detection Mode1198
- Enabling the PSE to Detect Nonstandard Pds1198
- Displaying and Maintaining Poe1199
- Poe Configuration Example1199
- Troubleshooting Poe1200
94 Sflowconfiguration1203
- Sflow Overview1203
- Configuring Sflow1204
- Displaying Sflow1204
- Sflow Configuration Example1204
- Troubleshooting Sflow Configuration1206
95 Ssl Configuration1207
- SSL Overview1207
- SSL Configuration Task List1208
- Configuring an SSL Server Policy1208
- Configuring an SSL Client Policy1210
- Displaying and Maintaining SSL1211
- Troubleshooting SSL1211
HTTPS Configuration Task List1213
- HTTPS Overview1213
- Associating the HTTPS Service with an SSL Server Policy1214
- Enabling the HTTPS Service1214
- Associating the HTTPS Service with a Certificate Attribute Access Control Policy1215
- Associating the HTTPS Service with an ACL1215
- Displaying and Maintaining HTTPS1215
- HTTPS Configuration Example1215
97 Pki Configuration1219
- Introduction to PKI1219
- PKI Configuration Task List1222
- Configuring an Entity DN1222
- Configuring a PKI Domain1223
- Submitting a PKI Certificate Request1225
- Retrieving a Certificate Manually1226
- Configuring PKI Certificate Validation1227
- Destroying a Local RSA Key Pair1228
- Deleting a Certificate1229
- Configuring an Access Control Policy1229
- Displaying and Maintaining PKI1229
- PKI Configuration Examples1230
- Troubleshooting PKI1235
Track1237
- Track Overview1237
- Configuring Collaboration between the Track Module and the Detection1237
- Track Configuration Task List1238
- Modules1238
- Modules1239
- Configuring Collaboration between the Track Module and the Application Modules1239
- Displaying and Maintaining Track Object(S)1241
- Track Configuration Example1241

3Com Switch 4800G 24-Port - Page 25

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