HPE FlexNetwork 5130 EI Series

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HPE FlexNetwork 5130 EI Switch Series

Layer 3—IP Services

Configuration Guide

Part number: 5200-3942

Software version: Release 32xx

Document version: 6W100-20170525

Main Page

Default Chapter1
- Configuration Guide1
- Table of Contents3
Configuring ARP11
- About ARP11
- ARP Tasks at a Glance13
- Configuring a Static ARP Entry13
- Configuring Features for Dynamic ARP Entries15
- Enabling ARP Logging17
- Display and Maintenance Commands for ARP17
- ARP Configuration Examples18
Configuring Gratuitous ARP22
- About Gratuitous ARP22
- Gratuitous ARP Tasks at a Glance23
- Enabling IP Conflict Notification23
- Enabling Gratuitous ARP Packet Learning23
- Enabling Periodic Sending of Gratuitous ARP Packets23
- Enabling Sending Gratuitous ARP Packets for ARP Requests with Sender IP Address on a Different Subnet24
Configuring Proxy ARP25
- About Proxy ARP25
- Enabling Common Proxy ARP25
- Enabling Local Proxy ARP25
- Display and Maintenance Commands for Proxy ARP25
- Common Proxy ARP Configuration Example26
  - Example: Configuring Common Proxy ARP26
Configuring ARP Snooping28
- About ARP Snooping28
- Enabling ARP Snooping28
- Display and Maintenance Commands for ARP Snooping28
Configuring ARP Direct Route Advertisement30
- About ARP Direct Route Advertisement30
  - Mechanism of ARP Direct Route Advertisement30
- Enabling ARP Direct Route Advertisement30
Configuring IP Addressing31
- About IP Addressing31
- Assigning an IP Address to an Interface33
- Display and Maintenance Commands for IP Addressing33
- IP Addressing Configuration Examples34
  - Example: Manually Specifying an IP Address34
DHCP Overview36
- DHCP Network Model36
- DHCP Address Allocation36
- DHCP Message Format38
- DHCP Options39
- Common DHCP Options39
- Custom DHCP Options39
- Protocols and Standards42
Configuring the DHCP Server43
- About DHCP Server43
  - DHCP Address Assignment Mechanisms43
  - Principles for Selecting an Address Pool44
  - IP Address Allocation Sequence45
- DHCP Server Tasks at a Glance45
- Creating a DHCP User Class46
- Configuring an Address Pool on the DHCP Server46
  - DHCP Address Pool Tasks at a Glance46
  - Creating a DHCP Address Pool46
  - Specifying a Primary Subnet and Multiple Address Ranges in a DHCP Address Pool47
  - Specifying a Primary Subnet and Multiple Secondary Subnets in a DHCP Address Pool48
  - Configuring a Static Binding in a DHCP Address Pool49
  - Specifying Gateways for DHCP Clients50
  - Specifying a Domain Name Suffix for DHCP Clients51
  - Specifying DNS Servers for DHCP Clients51
  - Specifying WINS Servers and Netbios Node Type for DHCP Clients51
  - Specifying BIMS Server for DHCP Clients52
  - Specifying the Configuration File for DHCP Client Automatic Configuration52
  - Specifying a Server for DHCP Clients53
  - Configuring Option 184 Parameters for DHCP Clients53
  - Customizing DHCP Options54
  - Configuring the DHCP User Class Whitelist56
- Applying an Address Pool to an Interface56
- Configuring a DHCP Policy for Dynamic Assignment57
- Enabling DHCP57
- Enabling the DHCP Server on an Interface58
- Configuring IP Address Conflict Detection58
- Enabling Handling of Option 8259
- Configuring the DHCP Server Security Features59
  - Restrictions and Guidelines59
  - Configuring DHCP Starvation Attack Protection59
- Configuring DHCP Server Compatibility60
  - Configuring the DHCP Server to Always Broadcast Responses60
  - Configuring the DHCP Server to Ignore BOOTP Requests60
  - Configuring the DHCP Server to Send BOOTP Responses in RFC 1048 Format61
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Server61
- Configuring DHCP Binding Auto Backup61
- Enabling Client Offline Detection on the DHCP Server62
- Configuring Address Pool Usage Alarming62
- Enabling DHCP Logging on the DHCP Server63
- Display and Maintenance Commands for DHCP Server63
- DHCP Server Configuration Examples64
  - Example: Configuring Static IP Address Assignment64
  - Example: Configuring Dynamic IP Address Assignment65
  - Example: Configuring DHCP User Class67
  - Network Requirement67
  - Example: Configuring DHCP User Class Whitelist69
  - Example: Configuring Primary and Secondary Subnets70
  - Example: Customizing DHCP Option71
- Troubleshooting DHCP Server Configuration73
  - Failure to Obtain a Non-Conflicting IP Address73
Configuring the DHCP Relay Agent74
- About DHCP Relay Agent74
  - DHCP Relay Agent Operation74
  - DHCP Relay Agent Support for Option 8275
- DHCP Relay Agent Tasks at a Glance75
- Enabling DHCP76
- Enabling the DHCP Relay Agent on an Interface76
- Specifying DHCP Servers76
- Configuring the DHCP Relay Agent Security Features79
- Configuring the DHCP Relay Agent to Release an IP Address82
- Configuring DHCP Relay Agent Support for Option 8282
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Relay Agent83
- Specifying the DHCP Relay Agent Address for the Giaddr Field83
  - Manually Specifying the DHCP Relay Agent Address for the Giaddr Field83
  - Configuring Smart Relay to Specify the DHCP Relay Agent Address for the Giaddr Field84
- Specifying the Source IP Address for Relayed DHCP Requests84
- Display and Maintenance Commands for DHCP Relay Agent85
- DHCP Relay Agent Configuration Examples85
- Troubleshooting DHCP Relay Agent Configuration88
  - Failure of DHCP Clients to Obtain Configuration Parameters through the DHCP Relay Agent88
Configuring the DHCP Client89
- About DHCP Client89
- Restrictions and Guidelines: DHCP Client Configuration89
- DHCP Client Tasks at a Glance89
- Enabling the DHCP Client on an Interface89
- Configuring a DHCP Client ID for an Interface90
- Enabling Duplicated Address Detection90
- Setting the DSCP Value for DHCP Packets Sent by the DHCP Client91
- Display and Maintenance Commands for DHCP Client91
- DHCP Client Configuration Examples91
  - Example: Configuring DHCP Client91
Configuring DHCP Snooping94
- About DHCP Snooping94
  - Application of Trusted and Untrusted Ports94
  - DHCP Snooping Support for Option 8295
- Restrictions and Guidelines: DHCP Snooping Configuration96
- DHCP Snooping Tasks at a Glance96
- Configuring Basic DHCP Snooping Features96
  - Configuring Basic DHCP Snooping Features in a Common Network96
- Configuring DHCP Snooping Support for Option 8298
- Configuring DHCP Snooping Entry Auto Backup99
- Setting the Maximum Number of DHCP Snooping Entries99
- Configuring DHCP Packet Rate Limit100
- Configuring DHCP Snooping Security Features100
- Enabling DHCP Snooping Logging102
- Disabling DHCP Snooping on an Interface102
- Display and Maintenance Commands for DHCP Snooping103
- DHCP Snooping Configuration Examples103
Configuring the BOOTP Client107
- About BOOTP Client107
- Configuring an Interface to Use BOOTP for IP Address Acquisition107
- Display and Maintenance Commands for BOOTP Client108
- BOOTP Client Configuration Examples108
  - Example: Configuring BOOTP Client108
Configuring DNS109
- About DNS109
- DNS Tasks at a Glance112
- Configuring the DNS Client112
  - Configuring Static Domain Name Resolution112
  - Configuring Dynamic Domain Name Resolution113
- Configuring the DNS Proxy114
- Configuring DNS Spoofing114
- Specifying the Source Interface for DNS Packets115
- Configuring the DNS Trusted Interface115
- Setting the DSCP Value for Outgoing DNS Packets116
- Display and Maintenance Commands for DNS116
- Ipv4 DNS Configuration Examples116
- Ipv6 DNS Configuration Examples121
- Troubleshooting DNS Configuration125
  - Failure to Resolve Ipv4 Addresses125
  - Failure to Resolve Ipv6 Addresses126
Configuring IP Forwarding Basic Settings127
- About FIB Table127
- Saving the IP Forwarding Entries to a File127
- Display and Maintenance Commands for FIB Table128
Configuring IRDP129
- About IRDP129
  - IRDP Operation129
  - Protocols and Standards129
- IRDP Tasks at a Glance129
- Restrictions and Guidelines: IRDP Configuration129
- Enabling IRDP130
- Specifying the Preference of Advertised IP Addresses130
- Setting the Lifetime of Advertised IP Addresses130
- Setting the Advertising Intervals131
- Specifying the Multicast Address as the Destination Address for Ras131
- Specifying a Proxy-Advertised IP Address132
- IRDP Configuration Examples132
  - Example: Configuring IRDP132
Optimizing IP Performance135
- IP Performance Optimization Tasks at a Glance135
- Enabling an Interface to Forward Directed Broadcasts Destined for the Directly Connected Network135
  - About Forwarding Broadcasts Destined for the Directly Connected Network135
  - Procedure136
- Setting the MTU of Ipv4 Packets Sent over an Interface137
- Enabling Sending ICMP Error Messages137
- Configuring Rate Limit for ICMP Error Messages139
- Disabling Forwarding ICMP Fragments140
- Specifying the Source Address for ICMP Packets140
- Setting TCP MSS for an Interface140
- Configuring TCP Path MTU Discovery141
- Enabling SYN Cookie142
- Setting the TCP Buffer Size142
- Setting TCP Timers142
- Display and Maintenance Commands for IP Performance Optimization143
Configuring UDP Helper144
- About UDP Helper144
- Configuring UDP Helper to Convert Broadcast to Unicast144
- Configuring UDP Helper to Convert Broadcast to Multicast145
- Display and Maintenance Commands for UDP Helper145
- UDP Helper Configuration Examples146
  - Example: Configuring UDP Helper to Convert Broadcast to Unicast146
  - Example: Configuring UDP Helper to Convert Broadcast to Multicast147
Configuring Basic Ipv6 Settings149
- About Ipv6149
- Ipv6 Basics Tasks at a Glance153
- Configuring an Ipv6 Global Unicast Address154
- Configuring an Ipv6 Link-Local Address157
- Configuring an Ipv6 Anycast Address158
- Configuring Path MTU Discovery158
- Controlling Sending Icmpv6 Messages159
- Enabling Ipv6 Local Fragment Reassembly162
- Display and Maintenance Commands for Ipv6 Basics162
- Basic Ipv6 Settings Configuration Examples163
  - Example: Configuring Basic Ipv6 Settings163
Configuring Ipv6 Neighbor Discovery168
- About Ipv6 Neighbor Discovery168
- Ipv6 Neighbor Discovery Tasks at a Glance170
- Configuring a Static Neighbor Entry171
- Setting the Dynamic Neighbor Learning Limit on an Interface171
- Setting the Aging Timer for ND Entries in Stale State172
- Minimizing Link-Local ND Entries172
- Setting the Hop Limit172
- Configuring RA Message Sending and Parameters173
- Setting the Maximum Number of Attempts to Send an NS Message for DAD175
- Configuring ND Snooping175
  - About ND Snooping175
  - Procedure177
- Enabling ND Proxy178
- Display and Maintenance Commands for Ipv6 ND179
- ND Snooping Configuration Examples180
  - Example: Configuring ND Snooping180
Dhcpv6 Overview183
- Dhcpv6 Address/Prefix Assignment183
  - Rapid Assignment Involving Two Messages183
  - Assignment Involving Four Messages183
- Address/Prefix Lease Renewal184
- Stateless Dhcpv6185
- Dhcpv6 Options185
  - Option 18185
  - Option 37186
- Protocols and Standards187
Configuring the Dhcpv6 Server188
- About Dhcpv6 Server188
- Dhcpv6 Server Tasks at a Glance191
- Configuring Ipv6 Prefix Assignment191
- Configuring Ipv6 Address Assignment193
- Configuring Network Parameters Assignment194
- Configuring the Dhcpv6 Server on an Interface196
- Configuring a Dhcpv6 Policy for Ipv6 Address and Prefix Assignment197
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Server198
- Configuring Dhcpv6 Binding Auto Backup198
- Enabling the Dhcpv6 Server to Advertise Ipv6 Prefixes199
- Enabling Dhcpv6 Logging on the Dhcpv6 Server199
- Display and Maintenance Commands for Dhcpv6 Server200
- Dhcpv6 Server Configuration Examples201
  - Example: Configuring Dynamic Ipv6 Prefix Assignment201
  - Example: Configuring Dynamic Ipv6 Address Assignment203
Configuring the Dhcpv6 Relay Agent206
- About Dhcpv6 Relay Agent206
  - Typical Application206
  - Dhcpv6 Relay Agent Operating Process206
- Dhcpv6 Relay Agent Tasks at a Glance207
- Enabling the Dhcpv6 Relay Agent on an Interface207
- Specifying Dhcpv6 Servers on the Relay Agent208
  - Specifying Dhcpv6 Server IP Addresses208
  - Specifying Dhcpv6 Servers for a Dhcpv6 Address Pool on the Dhcpv6 Relay Agent208
- Specifying a Gateway Address for Dhcpv6 Clients209
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Relay Agent209
- Specifying a Padding Mode for the Interface-ID Option210
- Enabling the Dhcpv6 Relay Agent to Advertise Ipv6 Prefixes210
- Configuring Dhcpv6 Relay Security Features210
- Display and Maintenance Commands for Dhcpv6 Relay Agent212
- Dhcpv6 Relay Agent Configuration Examples212
  - Example: Configuring Dhcpv6 Relay Agent212
Configuring the Dhcpv6 Client215
- About the Dhcpv6 Client215
- Restrictions and Guidelines: Dhcpv6 Client Configuration215
- Dhcpv6 Client Tasks at a Glance215
- Configuring the Dhcpv6 Client DUID215
- Configuring Ipv6 Address Acquisition216
- Configuring Ipv6 Prefix Acquisition216
- Configuring Ipv6 Address and Prefix Acquisition216
- Configuring Acquisition of Configuration Parameters Except IP Addresses and Prefixes217
- Setting the DSCP Value for Dhcpv6 Packets Sent by the Dhcpv6 Client217
- Display and Maintenance Commands for Dhcpv6 Client218
- Dhcpv6 Client Configuration Examples218
Configuring Dhcpv6 Snooping226
- About Dhcpv6 Snooping226
  - Application of Trusted and Untrusted Ports226
- Restrictions and Guidelines: Dhcpv6 Snooping Configuration227
- Dhcpv6 Snooping Tasks at a Glance227
- Configuring Basic Dhcpv6 Snooping227
- Configuring DHCP Snooping Support for Option 18228
- Configuring DHCP Snooping Support for Option 37228
- Configuring Dhcpv6 Snooping Entry Auto Backup228
- Setting the Maximum Number of Dhcpv6 Snooping Entries229
- Configuring Dhcpv6 Packet Rate Limit229
- Enabling Dhcpv6-REQUEST Check230
- Configuring a Dhcpv6 Packet Blocking Port230
- Enabling Dhcpv6 Snooping Logging231
- Display and Maintenance Commands for Dhcpv6 Snooping231
- Dhcpv6 Snooping Configuration Examples232
  - Example: Configuring Dhcpv6 Snooping232
Document Conventions and Icons233
- Conventions233
- Network Topology Icons234
Support and Other Resources235
- Accessing Hewlett Packard Enterprise Support235
- Accessing Updates235
Index237

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