HPE FlexNetwork MSR Series

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• The DHCP server has an address pool on the same subnet as the DHCP clients.

• The DHCP server and DHCP relay agent can reach each other.

• The DHCP server address specified on the DHCP relay interface connected to the DHCP

clients is correct.

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Default Chapter3
- Table of Contents3
Configuring ARP15
- Overview15
- Command and Hardware Compatibility17
- Configuring a Static ARP Entry17
- Setting the Maximum Number of Dynamic ARP Entries for a Device18
- Setting the Maximum Number of Dynamic ARP Entries for an Interface19
- Setting the Aging Timer for Dynamic ARP Entries19
- Enabling Dynamic ARP Entry Check19
- Enabling ARP Logging20
- Displaying and Maintaining ARP20
- Configuration Examples21
  - Long Static ARP Entry Configuration Example21
  - Short Static ARP Entry Configuration Example22
Configuring Gratuitous ARP24
- Overview24
  - Gratuitous ARP Packet Learning24
  - Periodic Sending of Gratuitous ARP Packets24
- Configuration Procedure25
- Enabling IP Conflict Notification26
Configuring Proxy ARP27
- Enabling Common Proxy ARP27
- Enabling Local Proxy ARP27
- Displaying Proxy ARP27
- Common Proxy ARP Configuration Example28
Configuring ARP Snooping30
- Overview30
- Feature and Hardware Compatibility30
- Configuration Procedure30
- Displaying and Maintaining ARP Snooping31
Configuring ARP Fast-Reply32
- Overview32
- Configuration Procedure32
- ARP Fast-Reply Configuration Example32
  - Network Requirements32
  - Configuration Procedure33
Configuring ARP Pnp34
- Overview34
- Configuration Prerequisites34
- Configuration Procedure34
- Displaying and Maintaining ARP Pnp35
- ARP Pnp Configuration Example35
Configuring ARP Suppression37
- Overview37
- Configuration Procedure37
- Displaying and Maintaining ARP Suppression38
- ARP Suppression Configuration Example38
Configuring ARP Direct Route Advertisement40
- Overview40
- Configuration Procedure40
Configuring IP Addressing41
- Overview41
- Assigning an IP Address to an Interface42
  - Configuration Guidelines43
  - Configuration Procedure43
- Configuring IP Unnumbered43
  - Configuration Prerequisites44
  - Configuration Procedure44
- Displaying and Maintaining IP Addressing44
- Configuration Examples44
  - IP Address Configuration Example44
  - IP Unnumbered Configuration Example46
DHCP Overview48
- DHCP Address Allocation48
- DHCP Message Format50
- DHCP Options51
  - Common DHCP Options51
  - Custom DHCP Options51
- Protocols and Standards53
Configuring the DHCP Server54
- Overview54
  - DHCP Address Pool54
  - IP Address Allocation Sequence56
- DHCP Server Configuration Task List56
- Configuring an Address Pool on the DHCP Server57
  - Configuration Task List57
  - Creating a DHCP Address Pool57
  - Specifying IP Address Ranges for a DHCP Address Pool57
  - Specifying Gateways for DHCP Clients60
  - Specifying a Domain Name Suffix for DHCP Clients61
  - Specifying DNS Servers for DHCP Clients61
  - Specifying WINS Servers and Netbios Node Type for DHCP Clients61
  - Specifying BIMS Server for DHCP Clients62
  - Specifying the Configuration File for DHCP Client Auto-Configuration62
  - Specifying a Server for DHCP Clients63
  - Configuring Option 184 Parameters for DHCP Clients64
  - Customizing DHCP Options64
  - Configuring the DHCP User Class Whitelist66
- Enabling DHCP66
- Enabling the DHCP Server on an Interface67
- Applying an Address Pool on an Interface67
- Configuring a DHCP Policy for Dynamic Address Assignment67
- Configuring IP Address Conflict Detection68
- Enabling Handling of Option 8269
- Configuring DHCP Server Compatibility69
  - Configuring the DHCP Server to Broadcast All Responses69
  - Configure the DHCP Server to Ignore BOOTP Requests70
  - Configuring the DHCP Server to Send BOOTP Responses in RFC 1048 Format70
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Server70
- Configuring DHCP Binding Auto Backup71
- Configuring Address Pool Usage Alarming71
- Binding Gateways to a Common MAC Address72
- Advertising Subnets Assigned to Clients72
- Applying a DHCP Address Pool to a VPN Instance73
- Enabling Client Offline Detection on the DHCP Server74
- Enabling DHCP Logging on the DHCP Server74
- Displaying and Maintaining the DHCP Server75
- DHCP Server Configuration Examples75
  - Static IP Address Assignment Configuration Example75
  - Dynamic IP Address Assignment Configuration Example77
  - DHCP User Class Configuration Example79
  - DHCP User Class Whitelist Configuration Example80
  - Primary and Secondary Subnets Configuration Example81
  - DHCP Option Customization Configuration Example83
- Troubleshooting DHCP Server Configuration84
  - Symptom84
  - Analysis84
  - Solution84
Configuring the DHCP Relay Agent86
- Overview86
  - Operation86
  - DHCP Relay Agent Support for Option 8287
- DHCP Relay Agent Configuration Task List87
- Enabling DHCP88
- Enabling the DHCP Relay Agent on an Interface88
- Specifying DHCP Servers on a Relay Agent88
- Specifying the Source Address and Gateway Address in DHCP Requests89
- Configuring the DHCP Relay Agent Security Features89
- Configuring the DHCP Relay Agent to Release an IP Address91
- Configuring Option 8292
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Relay Agent92
- Enabling DHCP Server Proxy on a DHCP Relay Agent93
- Configuring a DHCP Relay Address Pool93
- Specifying a Gateway Address for DHCP Clients94
- Enabling Client Offline Detection on the DHCP Relay Agent94
- Configuring the DHCP Smart Relay Feature95
- Displaying and Maintaining the DHCP Relay Agent96
- DHCP Relay Agent Configuration Examples97
  - DHCP Relay Agent Configuration Example97
  - Option 82 Configuration Example98
- Troubleshooting DHCP Relay Agent Configuration98
Configuring the DHCP Client100
- Enabling the DHCP Client on an Interface100
- Configuring a DHCP Client ID for an Interface100
- Enabling Duplicated Address Detection101
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Client101
- Displaying and Maintaining the DHCP Client101
- DHCP Client Configuration Example102
Configuring DHCP Snooping105
- Overview105
  - Application of Trusted and Untrusted Ports105
  - DHCP Snooping Support for Option 82106
- Command and Hardware Compatibility107
- DHCP Snooping Configuration Task List107
- Configuring Basic DHCP Snooping108
- Configuring Option 82109
- Configuring DHCP Snooping Entry Auto Backup110
- Enabling DHCP Starvation Attack Protection111
- Enabling DHCP-REQUEST Attack Protection111
- Setting the Maximum Number of DHCP Snooping Entries112
- Configuring DHCP Packet Rate Limit113
- Configuring a DHCP Packet Blocking Port113
- Enabling DHCP Snooping Logging114
- Displaying and Maintaining DHCP Snooping114
- DHCP Snooping Configuration Examples115
  - Basic DHCP Snooping Configuration Example115
  - Option 82 Configuration Example116
Configuring the BOOTP Client118
- BOOTP Application118
- Obtaining an IP Address Dynamically118
- Protocols and Standards118
- Configuring an Interface to Use BOOTP for IP Address Acquisition118
- Displaying and Maintaining BOOTP Client119
- BOOTP Client Configuration Example119
Configuring DNS120
- Overview120
- DNS Configuration Task List123
- Configuring the Ipv4 DNS Client123
  - Configuring Static Domain Name Resolution123
  - Configuring Dynamic Domain Name Resolution124
- Configuring the Ipv6 DNS Client125
  - Configuring Static Domain Name Resolution125
  - Configuring Dynamic Domain Name Resolution125
- Configuring the DNS Proxy126
- Configuring DNS Spoofing127
- Configuring Network Mode Tracking for an Output Interface127
- Specifying the Source Interface for DNS Packets128
- Configuring the DNS Trusted Interface128
- Setting the DSCP Value for Outgoing DNS Packets129
- Displaying and Maintaining DNS129
- Ipv4 DNS Configuration Examples129
- Ipv6 DNS Configuration Examples134
- Troubleshooting Ipv4 DNS Configuration139
  - Symptom139
  - Solution139
- Troubleshooting Ipv6 DNS Configuration139
Configuring DDNS140
- Overview140
  - DDNS Application140
- DDNS Client Configuration Task List141
- Configuring a DDNS Policy141
  - Configuration Prerequisites142
  - Configuration Procedure142
- Applying the DDNS Policy to an Interface143
- Setting the DSCP Value for Outgoing DDNS Packets143
- Displaying DDNS144
- DDNS Configuration Examples144
  - DDNS Configuration Example with Www.3322.Org144
  - DDNS Configuration Example with Peanuthull Server145
Configuring NAT147
- Overview147
- Command and Hardware Compatibility148
- NAT Implementations148
- NAT Entries153
- Using NAT with Other Features154
- NAT Configuration Task List155
- NAT Configuration Restrictions and Guidelines155
- Configuring Static NAT156
- Configuring Dynamic NAT159
- Configuring NAT Server162
- Configuring NAT444164
- Configuring DS-Lite NAT444166
- Configuring NAT with DNS Mapping167
- Configuring NAT Hairpin167
- Configuring NAT with ALG168
- Configuring NAT Logging168
- Enabling Sending ICMP Error Messages for NAT Failures170
- Displaying and Maintaining NAT171
- NAT Configuration Examples172
Basic IP Forwarding on the Device209
- FIB Table209
- Displaying FIB Table Entries209
Configuring Load Sharing211
- Command and Hardware Compatibility211
- Configuring Per-Packet or Per-Flow Load Sharing211
- Configuring Load Sharing Based on Bandwidth212
Configuring Fast Forwarding213
- Overview213
- Command and Hardware Compatibility213
- Configuring the Aging Time for Fast Forwarding Entries213
- Configuring Fast Forwarding Load Sharing213
- Displaying and Maintaining Fast Forwarding214
Configuring Flow Classification215
- Feature and Hardware Compatibility215
- Specifying a Flow Classification Policy215
Displaying the Adjacency Table216
- Overview216
- Command and Hardware Compatibility217
- Displaying Commands217
Configuring IRDP218
- Overview218
- Configuration Procedure219
- IRDP Configuration Example220
Optimizing IP Performance222
- Command and Hardware Compatibility222
  - Configuration Procedure222
  - Configuration Example223
- Setting MTU for an Interface224
- Setting TCP MSS for an Interface224
- Configuring TCP Path MTU Discovery224
- Enabling TCP SYN Cookie225
- Setting the TCP Buffer Size226
- Setting TCP Timers226
- Enabling Sending ICMP Error Messages226
- Configuring Rate Limit for ICMP Error Messages228
- Specifying the Source Address for ICMP Packets228
- Enabling Ipv4 Local Fragment Reassembly229
- Displaying and Maintaining IP Performance Optimization229
Configuring UDP Helper232
- Overview232
- Configuration Restrictions and Guidelines232
- Configuring UDP Helper to Convert Broadcast to Unicast232
- Configuring UDP Helper to Convert Broadcast to Multicast233
- Configuring UDP Helper to Convert Multicast to Broadcast or Unicast234
- Displaying and Maintaining UDP Helper234
- UDP Helper Configuration Examples235
Configuring Basic Ipv6 Settings238
- Overview238
- Ipv6 Transition Technologies244
- Command and Hardware Compatibility245
- Protocols and Standards245
- Ipv6 Basics Configuration Task List246
- Assigning Ipv6 Addresses to Interfaces247
- Configuring Ipv6 ND250
- Configuring Path MTU Discovery258
- Controlling Sending Icmpv6 Messages259
- Enabling Router Renumbering262
- Enabling Ipv6 Local Fragment Reassembly263
- Configuring Ipv6 Load Sharing Based on Bandwidth263
- Enabling a Device to Discard Ipv6 Packets that Contain Extension Headers263
- Displaying and Maintaining Ipv6 Basics264
- Ipv6 Configuration Examples268
  - Basic Ipv6 Configuration Example268
  - Ipv6 ND Suppression Configuration Example272
- Troubleshooting Ipv6 Basics Configuration273
  - Symptom273
  - Solution273
Dhcpv6 Overview274
- Dhcpv6 Address/Prefix Assignment274
  - Rapid Assignment Involving Two Messages274
  - Assignment Involving Four Messages274
- Address/Prefix Lease Renewal275
- Stateless Dhcpv6276
- Protocols and Standards276
Configuring the Dhcpv6 Server277
- Overview277
- Configuration Task List280
- Configuring Ipv6 Prefix Assignment280
  - Configuration Guidelines280
  - Configuration Procedure281
- Configuring Ipv6 Address Assignment281
  - Configuration Guidelines282
  - Configuration Procedure282
- Configuring Network Parameters Assignment283
  - Configuring Network Parameters in a Dhcpv6 Address Pool283
  - Configuring Network Parameters in a Dhcpv6 Option Group284
- Configuring a Dhcpv6 Policy for Ipv6 Address and Prefix Assignment285
- Configuring the Dhcpv6 Server on an Interface286
  - Configuration Guidelines286
  - Configuration Procedure286
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Server287
- Configuring Dhcpv6 Binding Auto Backup287
- Advertising Subnets Assigned to Clients288
- Applying a Dhcpv6 Address Pool to a VPN Instance288
- Enabling Dhcpv6 Logging on the Dhcpv6 Server289
- Displaying and Maintaining the Dhcpv6 Server289
- Dhcpv6 Server Configuration Examples290
  - Dynamic Ipv6 Prefix Assignment Configuration Example290
  - Dynamic Ipv6 Address Assignment Configuration Example292
Configuring the Dhcpv6 Relay Agent295
- Overview295
- Dhcpv6 Relay Agent Configuration Task List296
- Enabling the Dhcpv6 Relay Agent on an Interface296
- Specifying Dhcpv6 Servers on the Relay Agent296
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Relay Agent297
- Specifying a Padding Mode for the Interface-ID Option297
- Configuring a Dhcpv6 Relay Address Pool298
- Specifying a Gateway Address for Dhcpv6 Clients298
- Displaying and Maintaining the Dhcpv6 Relay Agent299
- Dhcpv6 Relay Agent Configuration Example299
Configuring the Dhcpv6 Client302
- Overview302
- Configuration Restrictions and Guidelines302
- Dhcpv6 Client Configuration Task List302
- Configuring Ipv6 Address Acquisition302
- Configuring Ipv6 Prefix Acquisition303
- Configuring Ipv6 Address and Prefix Acquisition303
- Configuring Stateless Dhcpv6303
- Configuring the Dhcpv6 Client DUID304
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Client304
- Displaying and Maintaining Dhcpv6 Client305
- Dhcpv6 Client Configuration Examples305
Configuring Dhcpv6 Snooping313
- Overview313
  - Application of Trusted and Untrusted Ports313
- Command and Hardware Compatibility314
- Dhcpv6 Snooping Configuration Task List314
- Configuring Basic Dhcpv6 Snooping314
- Configuring Option 18 and Option 37315
- Configuring Dhcpv6 Snooping Entry Auto Backup315
- Setting the Maximum Number of Dhcpv6 Snooping Entries316
- Enabling Dhcpv6-REQUEST Check316
- Configuring a Dhcpv6 Packet Blocking Port317
- Enabling Dhcpv6 Snooping Logging317
- Displaying and Maintaining Dhcpv6 Snooping318
- Dhcpv6 Snooping Configuration Example318
Configuring Ipv6 Fast Forwarding320
- Overview320
- Command and Hardware Compatibility320
- Configuring the Aging Time for Ipv6 Fast Forwarding Entries320
- Configuring Ipv6 Fast Forwarding Load Sharing321
- Displaying and Maintaining Ipv6 Fast Forwarding321
Configuring Tunneling322
- Overview322
- Compatibility Information330
  - Feature and Hardware Compatibility330
  - Command and Hardware Compatibility330
- Tunneling Configuration Task List330
- Configuring a Tunnel Interface331
- Configuring an Ipv6 over Ipv4 Manual Tunnel332
  - Configuration Example333
- Configuring an Automatic Ipv4-Compatible Ipv6 Tunnel335
  - Configuration Example336
- Configuring a 6To4 Tunnel337
  - 6To4 Tunnel Configuration Example338
  - 6To4 Relay Configuration Example339
- Configuring an ISATAP Tunnel341
  - Configuration Example342
- Configuring an Ipv4 over Ipv4 Tunnel344
  - Configuration Example345
- Configuring an Ipv4 over Ipv6 Manual Tunnel347
  - Configuration Example348
- Configuring a DS-Lite Tunnel349
  - Configuration Example351
- Configuring an Ipv6 over Ipv6 Tunnel353
  - Configuration Example354
- Displaying and Maintaining Tunneling Configuration356
- Troubleshooting Tunneling Configuration356
Configuring GRE357
- Overview357
- Configuring a Gre/Ipv4 Tunnel361
  - Configuration Guidelines361
  - Configuration Procedure361
- Configuring a Gre/Ipv6 Tunnel363
  - Configuration Guidelines363
  - Configuration Procedure363
- Displaying and Maintaining GRE365
- GRE Configuration Examples365
  - Configuring an Ipv4 over Ipv4 GRE Tunnel365
  - Configuring an Ipv4 over Ipv6 GRE Tunnel367
- Troubleshooting GRE370
Configuring ADVPN371
- Overview371
- ADVPN Configuration Task List376
- Configuring AAA376
- Configuring the VAM Server376
- Configuring the VAM Client381
- Configuring an ADVPN Tunnel Interface384
- Configuring Routing386
- Configuring Ipsec for ADVPN Tunnels386
- Displaying and Maintaining ADVPN387
- ADVPN Configuration Examples388
Configuring AFT454
- Overview454
- Command and Hardware Compatibility454
- AFT Implementations454
- AFT Translation Process456
  - Ipv6-Initiated Communication457
  - Ipv4-Initiated Communication458
- AFT Configuration Task List459
  - Ipv6-Initiated Communication459
  - Ipv4-Initiated Communication459
- Enabling AFT459
- Configuring an Ipv6-To-Ipv4 Destination Address Translation Policy459
- Configuring an Ipv6-To-Ipv4 Source Address Translation Policy460
- Configuring an Ipv4-To-Ipv6 Destination Address Translation Policy461
- Configuring an Ipv4-To-Ipv6 Source Address Translation Policy462
- Configuring AFT Logging462
- Setting the Tos Field to 0 for Translated Ipv4 Packets463
- Setting the Traffic Class Field to 0 for Translated Ipv6 Packets463
- Displaying and Maintaining AFT463
- AFT Configuration Examples465
Configuring WAAS476
- Tfo476
- Dre477
  - DRE Compression Process477
  - DRE Decompression Process477
- LZ Compression478
- Protocols and Standards478
- Command and Hardware Compatibility478
- WAAS Configuration Task List478
- Configuring a WAAS Class479
- Configuring a WAAS Policy479
- Applying a WAAS Policy to an Interface480
- Configuring TFO Parameters480
- Configuring the TFO Blacklist Autodiscovery Feature481
- Deleting All WAAS Settings481
- Restoring Predefined WAAS Settings481
- Displaying and Maintaining WAAS482
- WAAS Configuration Examples482
  - Predefined WAAS Policy Configuration Example482
  - User-Defined WAAS Policy Configuration Example484
Document Conventions and Icons488
- Conventions488
- Network Topology Icons489
Support and Other Resources490
- Accessing Hewlett Packard Enterprise Support490
- Accessing Updates490
Index493

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