HP 6125XLG - Verifying the Configuration

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Verifying the configuration

The DHCPv6 client obtains an IPv6 address and other configuration parameters from the authorized

DHCPv6 server. You can use the display ipv6 dhcp snooping binding command to display DHCPv6

snooping entries on the authorized DHCPv6 server.

Main Page

Configuration Guide1
Table of Contents3
Configuring ARP12
- Overview12
- Configuring a Static ARP Entry14
- Configuring a Multiport ARP Entry15
- Setting the Maximum Number of Dynamic ARP Entries for a Device16
- Setting the Maximum Number of Dynamic ARP Entries for an Interface16
- Setting the Aging Timer for Dynamic ARP Entries17
- Enabling Dynamic ARP Entry Check17
- Enabling ARP Logging17
- Configuring ARP Fast Update18
- Displaying and Maintaining ARP19
- Configuration Examples19
  - Static ARP Configuration Example19
  - Multiport ARP Entry Configuration Example20
Configuring Gratuitous ARP23
- Overview23
  - Gratuitous ARP Packet Learning23
  - Periodic Sending of Gratuitous ARP Packets23
- Configuration Procedure24
- Enabling IP Conflict Notification24
Configuring Proxy ARP26
- Enabling Common Proxy ARP26
- Enabling Local Proxy ARP26
- Displaying Proxy ARP27
- Common Proxy ARP Configuration Example27
  - Network Requirements27
  - Configuration Procedure27
Configuring ARP Snooping29
- Configuration Procedure29
- Displaying and Maintaining ARP Snooping29
Configuring IP Addressing30
- Overview30
- Assigning an IP Address to an Interface32
  - Configuration Guidelines32
  - Configuration Procedure32
- Configuring IP Unnumbered32
- Displaying and Maintaining IP Addressing33
- IP Address Configuration Example34
DHCP Overview36
- DHCP Address Allocation36
- DHCP Message Format38
- DHCP Options39
  - Common DHCP Options39
  - Custom DHCP Options39
- Protocols and Standards41
Configuring the DHCP Server43
- Overview43
  - DHCP Address Pool43
  - IP Address Allocation Sequence45
- DHCP Server Configuration Task List45
- Configuring an Address Pool on the DHCP Server46
- Enabling DHCP54
- Enabling the DHCP Server on an Interface54
- Applying an Address Pool on an Interface55
- Configuring IP Address Conflict Detection55
- Enabling Handling of Option 8255
- Configuring DHCP Server Compatibility56
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Server57
- Displaying and Maintaining the DHCP Server57
- DHCP Server Configuration Examples58
- Troubleshooting DHCP Server Configuration64
Configuring the DHCP Relay Agent66
- Overview66
  - Operation66
  - DHCP Relay Agent Support for Option 8267
- DHCP Relay Agent Configuration Task List67
- Enabling DHCP68
- Enabling the DHCP Relay Agent on an Interface68
- Specifying DHCP Servers on a Relay Agent68
- Configuring the DHCP Relay Agent Security Functions69
- Configuring the DHCP Relay Agent to Release an IP Address71
- Configuring Option 8271
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Relay Agent72
- Displaying and Maintaining the DHCP Relay Agent72
- DHCP Relay Agent Configuration Examples72
  - DHCP Relay Agent Configuration Example72
  - Option 82 Configuration Example73
- Troubleshooting DHCP Relay Agent Configuration74
Configuring the DHCP Client75
- Enabling the DHCP Client on an Interface75
- Configuring a DHCP Client ID for an Interface75
- Enabling Duplicated Address Detection76
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Client76
- Displaying and Maintaining the DHCP Client77
- DHCP Client Configuration Example77
Configuring DHCP Snooping80
- Overview80
  - Application of Trusted and Untrusted Ports80
  - DHCP Snooping Support for Option 8281
- DHCP Snooping Configuration Task List82
- Configuring Basic DHCP Snooping82
- Configuring Option 8283
- Saving DHCP Snooping Entries84
- Enabling DHCP Starvation Attack Protection85
- Enabling DHCP-REQUEST Attack Protection85
- Setting the Maximum Number of DHCP Snooping Entries86
- Configuring DHCP Packet Rate Limit86
- Displaying and Maintaining DHCP Snooping87
- DHCP Snooping Configuration Examples88
  - Basic DHCP Snooping Configuration Example88
  - Option 82 Configuration Example88
Configuring the BOOTP Client90
- BOOTP Application90
- Obtaining an IP Address Dynamically90
- Protocols and Standards90
- Configuring an Interface to Use BOOTP for IP Address Acquisition91
- Displaying and Maintaining BOOTP Client91
- BOOTP Client Configuration Example91
  - Network Requirements91
  - Configuration Procedure91
Configuring DNS92
- Overview92
- DNS Configuration Task List95
- Configuring the Ipv4 DNS Client96
  - Configuring Static Domain Name Resolution96
  - Configuring Dynamic Domain Name Resolution96
- Configuring the Ipv6 DNS Client97
  - Configuring Static Domain Name Resolution97
  - Configuring Dynamic Domain Name Resolution98
- Configuring the DNS Proxy98
- Configuring DNS Spoofing99
- Specifying the Source Interface for DNS Packets99
- Configuring the DNS Trusted Interface100
- Setting the DSCP Value for Outgoing DNS Packets100
- Displaying and Maintaining Ipv4 DNS101
- Ipv4 DNS Configuration Examples101
- Ipv6 DNS Configuration Examples106
- Troubleshooting Ipv4 DNS Configuration112
  - Symptom112
  - Solution112
- Troubleshooting Ipv6 DNS Configuration112
Configuring DDNS113
- Overview113
  - DDNS Application113
- DDNS Client Configuration Task List114
- Configuring a DDNS Policy114
  - Configuration Prerequisites116
  - Configuration Procedure116
- Applying the DDNS Policy to an Interface116
- Setting the DSCP Value for Outgoing DDNS Packets117
- Displaying DDNS117
- DDNS Configuration Examples118
  - DDNS Configuration Example with Www.3322.Org118
  - DDNS Configuration Example with Peanuthull Server119
Basic IP Forwarding on the Device121
- FIB Table121
- Displaying FIB Table Entries121
Configuring Load Sharing123
- Overview123
- Enabling Local-First Load Sharing123
- Load Sharing Configuration Example124
Configuring IRDP126
- Overview126
- Configuration Procedure127
- IRDP Configuration Example128
Optimizing IP Performance131
- Configuration Procedure131
- Configuration Example132
- Configuring MTU for an Interface132
- Configuring TCP MSS for an Interface133
- Configuring TCP Path MTU Discovery133
- Enabling TCP SYN Cookie134
- Configuring the TCP Buffer Size135
- Configuring TCP Timers135
- Enabling Sending ICMP Error Messages135
- Disabling Forwarding ICMP Fragments137
- Configuring Rate Limit for ICMP Error Messages137
- Specifying the Source Address for ICMP Packets137
- Configuring IP Virtual Fragment Reassembly138
  - Configuration Guidelines138
  - Configuration Procedure138
- Displaying and Maintaining IP Performance Optimization139
Configuring UDP Helper140
- Overview140
- Configuration Guidelines140
- Configuration Procedure140
- Displaying and Maintaining UDP Helper141
- UDP Helper Configuration Example141
Configuring Basic Ipv6 Settings143
- Overview143
- Ipv6 Transition Technologies149
  - Dual Stack150
  - Tunneling150
- Protocols and Standards150
- Ipv6 Basics Configuration Task List150
- Assigning Ipv6 Addresses to Interfaces151
- Configuring Ipv6 ND155
- Configuring a Customer-Side Port161
- Configuring Path MTU Discovery161
- Controlling Sending Icmpv6 Messages162
- Enabling a Device to Discard Ipv6 Packets that Contain Extension Headers165
- Displaying and Maintaining Ipv6 Basics165
- Basic Ipv6 Configuration Example167
- Troubleshooting Ipv6 Basics Configuration171
  - Symptom171
  - Solution171
Dhcpv6 Overview172
- Dhcpv6 Address/Prefix Assignment172
  - Rapid Assignment Involving Two Messages172
  - Assignment Involving Four Messages172
- Address/Prefix Lease Renewal173
- Stateless Dhcpv6174
- Protocols and Standards174
Configuring the Dhcpv6 Server175
- Overview175
- Configuration Task List178
- Configuring Ipv6 Prefix Assignment178
  - Configuration Guidelines179
  - Configuration Procedure179
- Configuring Ipv6 Address Assignment180
  - Configuration Guidelines180
  - Configuration Procedure180
- Configuring Network Parameters Assignment181
- Configuring the Dhcpv6 Server on an Interface182
  - Configuration Guidelines182
  - Configuration Procedure182
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Server183
- Displaying and Maintaining the Dhcpv6 Server183
- Dhcpv6 Server Configuration Examples184
  - Dynamic Ipv6 Prefix Assignment Configuration Example184
  - Dynamic Ipv6 Address Assignment Configuration Example186
Configuring the Dhcpv6 Relay Agent189
- Overview189
- Configuration Guidelines190
- Configuration Procedure190
- Displaying and Maintaining the Dhcpv6 Relay Agent191
- Dhcpv6 Relay Agent Configuration Example191
Configuring the Dhcpv6 Client193
- Overview193
- Dhcpv6 Client Configuration Task List193
- Configuring Ipv6 Address Acquisition193
- Configuring Ipv6 Prefix Acquisition194
- Configuring Stateless Dhcpv6194
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Client195
- Configuring the Dhcpv6 Client DUID195
- Displaying and Maintaining Dhcpv6 Client196
- Dhcpv6 Client Configuration Examples196
Configuring Dhcpv6 Snooping202
- Overview202
  - Application of Trusted and Untrusted Ports202
- HP Implementation of Option 18 and Option 37203
  - Option 18 for Dhcpv6 Snooping203
  - Dhcpv6 Snooping Support for Option 37204
- Dhcpv6 Snooping Configuration Task List204
- Configuring Basic Dhcpv6 Snooping205
- Configuring Option 18 and Option 37205
- Saving Dhcpv6 Snooping Entries206
- Setting the Maximum Number of Dhcpv6 Snooping Entries207
- Enabling Dhcpv6-REQUEST Check207
- Configuring Dhcpv6 Packet Rate Limit208
- Displaying and Maintaining Dhcpv6 Snooping208
- Dhcpv6 Snooping Configuration Example209
Configuring Tunneling211
- Overview211
- Tunneling Configuration Task List216
- Configuring a Tunnel Interface216
- Configuring an Ipv6 over Ipv4 Manual Tunnel217
  - Configuration Example218
- Configuring a 6To4 Tunnel220
  - Configuration Example221
- Configuring an ISATAP Tunnel223
  - Configuration Example224
- Configuring an Ipv4 over Ipv4 Tunnel226
  - Configuration Example227
- Configuring an Ipv4 over Ipv6 Tunnel229
  - Configuration Example230
- Configuring an Ipv6 over Ipv6 Tunnel232
  - Configuration Example233
- Displaying and Maintaining Tunneling235
- Troubleshooting Tunneling235
Configuring GRE237
- Overview237
- Configuring a GRE over Ipv4 Tunnel238
- Configuring a GRE over Ipv6 Tunnel240
- Displaying and Maintaining GRE242
- GRE Configuration Examples243
  - GRE over Ipv4 Tunnel Configuration Example243
  - GRE over Ipv6 Tunnel Configuration Example245
- Troubleshooting GRE248
Support and Other Resources250
- Contacting HP250
  - Subscription Service250
- Related Information250
  - Documents250
  - Websites250
- Conventions251

HP 6125XLG - Verifying the Configuration

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