H3c-technologies H3C SecPath F1000-E User Manual

i Table of Contents ARP Configuration·················································································································

1 Gratuitous ARP Configuration This chapter includes these sections: • Introduction to Gratuitous ARP • Configuring Gratuitous ARP Introduction to Gr

i Table of Contents IPv6 Basics Configuration·········································································································

1 IPv6 Basics Configuration This chapter includes these sections: • IPv6 Overview • IPv6 Basics Configuration Task List • Displaying and Maintaining

2 Figure 1 IPv4 packet header format and basic IPv6 packet header format Larger address space The source and destination IPv6 addresses are 128 bi

3 Internet Control Message Protocol version 4 (ICMPv4) Router Discovery messages, and ICMPv4 Redirect messages and provides a series of other functio

4 Table 1 Mappings between address types and format prefixes Type Format prefix (binary) IPv6 prefix ID Unspecified address 00...0 (128 bits) ::/1

5 Multicast addresses also include solicited-node addresses. A node uses a solicited-node multicast address to acquire the link-layer address of a ne

6 • Duplicate address detection Router/prefix discovery and address autoconfiguration NOTE: • In addition to an address prefix, the Prefix Informat

7 Figure 3 Address resolution The address resolution process is: 1. Host A multicasts an NS message. The source address of the NS message is the I

8 2. If Host B uses this IPv6 address, Host B returns an NA message. The NA message contains the IPv6 address of Host B. 3. Host A learns that the I

9 Figure 5 PMTU discovery process The PMTU discovery process is: 1. The source host compares its MTU with the packet to be sent, performs necess

2 • Prevent the virtual IP address of a VRRP group from being used by a host The master router of a VRRP group can periodically send gratuitous ARP

10 • RFC 1881: IPv6 Address Allocation Management • RFC 1887: An Architecture for IPv6 Unicast Address Allocation • RFC 1981: Path MTU Discovery f

11 Task Remarks Enabling Sending of ICMPv6 Destination Unreachable Messages Optional Configuring Basic IPv6 Functions Enabling IPv6 Enable IPv6 bef

12 To do… Use the command… Remarks Enter system view system-view — Enter interface view interface interface-type interface-number — Configure the i

13 vulnerability, you can configure the temporary address function that enables the system to generate and use temporary IPv6 addresses with differen

14 NOTE: • After an IPv6 site-local address or a global unicast address is configured for an interface, a link-local address is generated automati

15 CAUTION: You can use either method above to configure a static neighbor entry for a VLAN interface. • After a static neighbor entry is configure

16 Parameters Description M flag This field determines whether hosts use the stateful autoconfiguration to acquire IPv6 addresses. If the M flag is s

17 To do… Use the command… Remarks Configure the hop limit ipv6 nd hop-limit value Optional 64 by default. Enter interface view interface interface

18 NOTE: • The maximum interval for sending RA messages should be less than or equal to the router lifetime in RAmessages. • The values of the NS

19 Figure 6 Application environment of ND proxy Because Host A considers that Host B is on the same network, it directly sends an NS message to obt

3 NOTE: • You can enable periodic sending of gratuitous ARP packets on a maximum of 1024 interfaces. • Periodic sending of gratuitous ARP packets

20 To do… Use the command… Remarks Configure the interface MTU ipv6 mtu mtu-size Optional The default value varies by interface. Configuring a Sta

21 received, the finwait timer is reset upon receipt of the last non-FIN packet and the connection is terminated after the finwait timer expires. •

22 Configuring ICMPv6 Packet Sending Configuring the Maximum ICMPv6 Error Packets Sent in an Interval If too many ICMPv6 error packets are sent withi

23 • If a received IPv6 packet’s destination IP address is not a local address and its hop limit is 1, the device sends an ICMPv6 Hop Limit Exceeded

24 Displaying and Maintaining IPv6 Basics Configuration To do… Use the command… Remarks Display the IPv6 FIB entries display ipv6 fib [ ipv6-addr

25 IPv6 Configuration Example Network requirements • The host, device and router are directly connected through GigabitEthernet interfaces. Configu

26 3. Configure the host Enable IPv6 for the host to obtain an IPv6 address automatically through IPv6 ND. [Device] display ipv6 neighbors interface

27 OutFragOKs: 0 OutFragCreates: 0 InMcastPkts: 6 InMcastNotMembers: 25747

28 OutFragOKs: 0 OutFragCreates: 0 InMcastPkts: 79 InMcastNotMembers: 65 Ou

29 InMcastPkts: 28 InMcastNotMembers: 0 OutMcastPkts: 7 InAddrErrors: 0 InD

1 Proxy ARP Configuration This chapter includes these sections: • Proxy ARP Overview • Enabling Proxy ARP • Displaying and Maintaining Proxy ARP • Pr

i Table of Contents FTP Configuration·················································································································

1 FTP Configuration This chapter includes these sections: • FTP Overview • Configuring the FTP Client • Configuring the FTP Server • Displaying and M

2 Table 1 Configuration when the device serves as the FTP client Device Configuration Remarks Device (FTP client) Use the ftp command to establish t

3 Establishing an FTP Connection To access an FTP server, an FTP client must establish a connection with the FTP server. Two ways are available to es

4 Follow these steps to establish an IPv6 FTP connection: To do… Use the command… Remarks Log in to the remote FTP server directly in user view ftp

5 4. Use the lcd command to display the local working directory of the FTP client. You can upload the file under this directory, or save the download

6 Maintaining and Debugging an FTP Connection After a device serving as the FTP client has established a connection with the FTP server (For how to

7 Figure 2 Network diagram for FTPing a startup file from an FTP server InternetDevice10.1.1.1/16FTP serverFTP client10.2.1.1/16PC Configuration pro

8 CAUTION: The startup file used for the next startup must be saved under the root directory of the storage medium (Fora device that has been partit

9 Configuring Authentication and Authorization on the FTP Server To allow an FTP user to access certain directories on the FTP server, you need to cr

2 A main advantage of proxy ARP is that it is added on a single device without disturbing routing tables of other devices in the network. Proxy ARP a

10 Figure 3 Upgrading using the FTP server InternetDeviceFTP serverPCFTP client1.2.1.1/161.1.1.1/16 Configuration procedure Step1 Configure Device

11 ftp> put newest.app ftp> bye NOTE: • You can take the same steps to upgrade configuration file with FTP. When upgrading the configuratio

1 TFTP Configuration This chapter includes these sections: • TFTP Overview • Configuring the TFTP Client • Displaying and Maintaining the TFTP Client

2 Table 3 Configuration when the device serves as the TFTP client Device Configuration Remarks Device (TFTP client) • Configure the IP address and

3 To do… Use the command… Remarks Enter system view system-view — Use an ACL to control the device’s access to TFTP servers tftp-server [ ipv6 ] ac

4 Figure 5 Smooth upgrading using the TFTP client function Configuration procedure Step1 Configure the PC (TFTP Server), the configuration procedu

i Table of Contents Tunneling Configuration ··········································································································

1 Tunneling Configuration NOTE: The term router in this document refers to a network routing device running a routing protocol. This chapter incl

2 processing, but may also lead to upper-layer application failures. Furthermore, they will still face the problem that IPv4 addresses will eventuall

3 2. After determining according to the routing table that the packet needs to be forwarded through the tunnel, the device at the source end of the t

3 To do… Use the command… Remarks Enter system view system-view — Enter interface view interface interface-type interface-number — Enable local pro

4 Tunnel mode Source/destination IP address of the tunnel IP address of the tunnel interface 6to4 tunnel The source IP address is a manually configu

5 6to4 network to an IPv6 network, a 6to4 router must be used as a gateway to forward packets to the IPv6 network. Such a router is called 6to4 relay

6 IPv4 over IPv4 Tunnel Introduction to IPv4 over IPv4 tunneling protocol The IPv4 over IPv4 tunneling protocol (RFC 1853) is developed for IP data p

7 Figure 5 Principle of IPv4/IPv6 over IPv6 tunnel The original data in Figure 5 refers to an IPv4 or IPv6 packet. Encapsulation and de-encapsulati

8 Figure 6 Network diagram for 6PE When an ISP wants to utilize the existing IPv4/MPLS network to provide IPv6 traffic switching capability through

9 Configuring a Tunnel Interface Follow these steps to configure a tunnel interface: To do… Use the command… Remarks Enter system view system-view

10 To do… Use the command… Remarks Enable IPv6 ipv6 Required By default, the IPv6 packet forwarding function is disabled. Enter tunnel interface vi

11 Configuration Example Network requirements As shown in Figure 7, two IPv6 networks are connected to an IPv4 network through Device A and Device B

12 [DeviceB] ipv6 # Configure an IPv4 address for GigabitEthernet 1/2. [DeviceB] interface gigabitethernet 1/2 [DeviceB-GigabitEthernet1/2] ip addres

13 Joined group address(es): FF02::1:FF00:0 FF02::1:FF00:1 FF02::1:FFA8:3201 FF02::2 FF02::1 MTU is 1480 bytes ND reachable

4 Figure 6 Network diagram for proxy ARP Configuration procedure # Specify the IP address of interface GigabitEthernet 0/2. <Device> system-v

14 To do… Use the command… Remarks Enter system view system-view — Enable the IPv6 packet forwarding function ipv6 Required By default, the IPv6 pa

15 Figure 8 Network diagram for an automatic IPv4-compatible IPv6 tunnel Configuration procedure NOTE: Make sure that Device A and Device B are

16 Tunnel0 current state :UP Line protocol current state :UP IPv6 is enabled, link-local address is FE80::C0A8:6401 Global unicast address(es):

17 --- ::192.168.50.1 ping statistics --- 5 packet(s) transmitted 5 packet(s) received 0.00% packet loss round-trip min/avg/max =

18 NOTE: • No destination address needs to be configured for a 6to4 tunnel because the destination address can automatically be obtained from the

19 • Configuration on Device A. # Enable IPv6. <DeviceA> system-view [DeviceA] ipv6 # Configure an IPv4 address for GigabitEthernet 1/2. [Devi

20 Pinging 2002:501:101:1::2 from 2002:201:101:1::2 with 32 bytes of data: Reply from 2002:501:101:1::2: bytes=32 time=13ms Reply from 2002:501:101:

21 # Configure an IPv4 address for GigabitEthernet 1/2. [DeviceA] interface gigabitethernet 1/2 [DeviceA-GigabitEthernet1/2] ip address 2.1.1.1 255.2

22 Reply from 2001::2: bytes=32 time=13ms Reply from 2001::2: bytes=32 time=1ms Reply from 2001::2: bytes=32 time=1ms Reply from 2001::2: bytes=32 t

23 To do… Use the command… Remarks Configure a source address or interface for the tunnel source { ip-address | interface-type interface-number } R

5 Figure 7 Network diagram for local proxy ARP between isolated ports NOTE: • The switch in this diagram is a distributed device. • In this con

24 [Device-GigabitEthernet1/2] ipv6 address 3001::1/64 [Device-GigabitEthernet1/2] quit [Device] interface gigabitethernet 1/1 [Device-GigabitEtherne

25 does not use Neighbor Discovery uses Router Discovery routing preference 1 EUI-64 embedded IPv4 address: 2.1.1.2 router link-layer addre

26 To do… Use the command… Remarks Enter tunnel interface view interface tunnel number — Configure an IPv4 address for the tunnel interface ip addr

27 Figure 12 Network diagram for an IPv4 over IPv4 tunnel GE1/110.1.1.1/24GE2/02.1.1.1/24GE1/110.1.3.1/24Device AIPv4 netwokIPv4Group 1Tunnel110.1.2.

28 [DeviceB-GigabitEthernet1/1] quit # Configure an IPv4 address for GigabitEthernet 2/1 (the physical interface of the tunnel). [DeviceB] interface

29 The Maximum Transmit Unit is 64000 Internet Address is 10.1.2.2/24 Primary Encapsulation is TUNNEL, service-loopback-group ID not set Tunnel sourc

30 To do… Use the command… Remarks Configure an IPv4 address for the tunnel interface ip address ip-address { mask | mask-length } [ sub ] Required

31 Configuration procedure NOTE: Make sure that Device A and Device B are reachable to each other. • Configuration on Device A # Enable IPv6. &l

32 # Create the interface tunnel 2. [DeviceB] interface tunnel 2 # Configure an IPv4 address for the interface tunnel 2. [DeviceB-Tunnel2] ip address

33 Output queue : (Protocol queuing : Size/Length/Discards) 0/500/0 Output queue : (FIFO queuing : Size/Length/Discards) 0/75/0 Last 300 second

6 The ping operation from Host A to Host B is unsuccessful because they are isolated at Layer 2 and Layer 3. # Configure local proxy ARP to allow com

34 To do… Use the command… Remarks or site-local address ipv6 address ipv6-address/prefix-length eui-64 ipv6 address auto link-local interface Con

35 Configuration Example Network requirements As shown in Figure 14, the two subnets Group 1 and Group 2 running IPv6 are interconnected by using an

36 [DeviceA-Tunnel1] quit # Configure a static route from Device A through the interface tunnel 1 to Group 2. [DeviceA] ipv6 route-static 2002:3:: 64

37 MTU is 1460 bytes ND reachable time is 30000 milliseconds ND retransmit interval is 1000 milliseconds Hosts use stateless autoconfig for a

38 Displaying and Maintaining Tunneling Configuration To do… Use the command… Remarks Display information about tunnel interfaces display interface

i Table of Contents NAT-PT Configuration··············································································································

1 NAT-PT Configuration This chapter includes these sections: • NAT-PT Overview • Configuring NAT-PT • Displaying and Maintaining NAT-PT • NAT-PT Conf

2 Dynamic mappings are dynamically generated for translation between IPv6 and IPv4 addresses. Different from static mappings, dynamic mappings are no

3 translated into a valid IPv4 address, the destination IPv6 address is translated into that IPv4 address. Otherwise, the translation fails. 4. For

4 Currently, NAT-PT supports Internet Control Message Protocol (ICMP), Domain Name System (DNS), File Transfer Protocol (FTP), and other protocols th

7 [Switch-vlan5] quit [Switch] isolate-user-vlan 5 secondary 2 3 Step2 Configure the device # Specify the IP address of GigabitEthernet 0/2. <Dev

5 • Enable IPv6 on the device. For more information, see IPv6 Basics Configuration in the IP Services Volume. • Configure an IPv4 or IPv6 address a

6 To do… Use the command… Remarks Enter system view system-view — Configure a static IPv4/IPv6 address mapping on the IPv6 side natpt v6bound stati

7 To do… Use the command… Remarks Associate an IPv6 ACL with an address pool: If the source IPv6 address of an IPv6 packet matches the specified IP

8 • If the destination IPv6 address in a packet sent from an IPv6 host to an IPv4 host matches a static IPv4/IPv6 address mapping, the destination I

9 Follow these steps to set the Traffic Class field in packets after NAT-PT translation: To do… Use the command… Remarks Enter system view system-v

10 To do… Use the command… Remarks Display NAT-PT statistics information display natpt statistics Available in any view Clear all NAT-PT statistics

11 [DeviceB] natpt v6bound dynamic prefix 3001:: address-group 1 Step2 Configure Device A on the IPv4 side # Configure a static route to subnet 9.0.

12 # Configure interface addresses and enable NAT-PT on the interfaces. <DeviceB> system-view [DeviceB] ipv6 [DeviceB] interface gigabitethern

13 1 2001::0002 ^ 0 9.0.0.5 ^ 0 ICMP 3001::0005 ^ 0 8.0.0.2

1 ARP Configuration This chapter includes these sections: • ARP Overview • Configuring ARP • Displaying and Maintaining ARP • ARP Configuration Examp

i Table of Contents IP Performance Optimization Configuration ························································································

1 IP Performance Optimization Configuration This chapter includes these sections: • IP Performance Optimization Overview • Enabling Reception and For

2 Enabling Reception of Directed Broadcasts to a Directly Connected Network If a device is enabled to receive directed broadcasts, the device will de

3 GigabitEthernet 0/1 (IP address 1.1.1.2/24) of Device A. Configure a static route to the host on Device B. It is required that directed broadcasts

4 Configuring TCP Attributes Configuring TCP MSS for the Interface The Max Segment Size (MSS) option informs the receiver of the largest segment that

5 • finwait timer: When a TCP connection is changed into FIN_WAIT_2 state, the finwait timer is started. If no FIN packet is received within the tim

6 If the device received an IP packet with a timeout error, it drops the packet and sends an ICMP timeout packet to the source. The device will send

7 Configuration Procedure Follow these steps to enable sending of ICMP error packets: To do… Use the command… Remarks Enter system view system-vie

i Table of Contents Adjacency Table Configuration ····································································································

1 Adjacency Table Configuration This chapter includes these sections: • Adjacency Table Overview • Displaying and Maintaining Adjacency Table NOTE

2 • Sender hardware address: This field specifies the hardware address of the device sending the message. • Sender protocol address: This field spe

2 • Link media type: Related to the link layer protocol used by the outgoing interface. P2P indicates point-to-point, such as the point-to-point pro

i Table of Contents DHCP Overview·····················································································································

ii DHCP Relay Agent Configuration·····················································································································

1 DHCP Overview This chapter includes these sections: • Introduction to DHCP • DHCP Address Allocation • DHCP Message Format • DHCP Options • Protoco

2 DHCP Address Allocation Allocation Mechanisms DHCP supports three mechanisms for IP address allocation. • Manual allocation: The network administr

3 IP Address Lease Extension The IP address dynamically allocated by a DHCP server to a client has a lease. When the lease expires, the IP address i

4 • siaddr: Server IP address, from which the client obtained configuration parameters. • giaddr: IP address of the first relay agent a request mes

5 • Option 33: Static route option. It specifies a list of classful static routes (the destination addresses in these static routes are classful) th

6 Figure 6 Format of the value field of the ACS parameter sub-option • The value field of the service provider identifier sub-option contains the

7 Figure 8 Sub-option 1 in normal padding format Sub-option type (0x01)0715Length (0x06) Circuit ID type (0x00) Length (0x04)23 31VLAN ID Interface n

3 ARP Table After obtaining the MAC address of a host, the device puts the IP-to-MAC mapping into its own ARP table. This mapping is used for forward

8 • Sub-option 4: Failover route that specifies the destination IP address and the called number that a Session Initiation Protocol (SIP) user uses

1 DHCP Server Configuration This chapter includes these sections: • Introduction to DHCP Server • DHCP Server Configuration Task List • Displaying an

2 After establishment of the inheritance relationship, the new configuration at the higher level (father) of the tree will be: • Inherited if the lo

3 If no IP address is assignable, the server does not respond. NOTE: Option 50 is the requested IP address field in DHCP-DISCOVER messages. It is

4 Creating a DHCP Address Pool When creating a DHCP address pool, specify it as a common address pool or an extended address pool. Follow these steps

5 To do… Use the command… Remarks or client ID Specify the client ID static-bind client-identifier client-identifier Neither is bound statically b

6 NOTE: • In common address pool view, using the network command repeatedly overwrites the previous configuration. • After you exclude IP address

7 Configuring a Domain Name Suffix for the Client You can specify a domain name suffix in each DHCP address pool on the DHCP server to provide the cl

8 • h (hybrid)-node: A combination of peer-to-peer first and broadcast second. The h-node client unicasts the destination name to the WINS server, i

9 To do… Use the command… Remarks Specify gateways gateway-list ip-address&<1-8> Required No gateway is specified by default. Configuri

4 To do… Use the command… Remarks Configure a long static ARP entry arp static ip-address mac-address vlan-id interface-type interface-number [ vp

10 Follow these steps to configure a self-defined DHCP option in the DHCP address pool: To do… Use the command… Remarks Enter system view system-v

11 To do… Use the command… Remarks Enter system view system-view — Enter interface view interface interface-type interface-number — Enable the D

12 Configuring the DHCP Server Security Functions This configuration is necessary to secure DHCP services on the DHCP server. Configuration Prerequis

13 To do… Use the command… Remarks Configure a timeout waiting for ping responses dhcp server ping timeout milliseconds Optional 500 ms by default

14 To do… Use the command… Remarks Enter system view system-view — Enable the DHCP server to send trap messages to the network management server

15 The DHCP server configuration for the two types is the same. Static IP Address Assignment Configuration Example Network requirements As shown in F

16 [DeviceA-dhcp-pool-1] gateway-list 10.1.1.126 3. Verification After the preceding configuration is complete, Device B can obtain IP address 10.1.

17 # Enable DHCP. <DeviceA> system-view [DeviceA] dhcp enable # Exclude IP addresses from dynamic allocation (addresses of the DNS server, WINS

18 Figure 13 Network diagram for self-defined option configuration Configuration procedure 1. Specify IP address for interface GigabitEthernet 0/1

1 DHCP Relay Agent Configuration This chapter includes these sections: • Introduction to DHCP Relay Agent • DHCP Relay Agent Configuration Task List

5 NOTE: • The setting can take effect only after you save it and restart the system. • When the maximum number of ARP entries the system supports

2 No matter whether a relay agent exists or not, the DHCP server and client interact with each other in a similar way (see section Dynamic IP Address

3 If a client’s requesting message has… Handling strategy Padding format The DHCP relay agent will… user-defined Forward the message after replacing

4 To do… Use the command… Remarks Enter system view system-view — Enter interface view interface interface-type interface-number — Enable the DHC

5 • The group-id argument in the dhcp relay server-select command is configured by using the dhcp relay server-group command. Configuring the DHCP

6 With this feature, the DHCP relay agent uses the IP address of a client and the MAC address of the DHCP relay interface to periodically send a DHCP

7 relieves DHCP starvation attack that comprises DHCP packets encapsulated with different source MAC addresses. To prevent a DHCP starvation attack t

8 Configuring the DHCP Relay Agent to Send DHCP-RELEASE Messages This task allows you to release a client’s IP address manually on the DHCP relay age

9 To do… Use the command… Remarks Configure the code type for the circuit ID sub-option dhcp relay information circuit-id format-type { ascii | hex

10 To do… Use the command… Remarks Display information about the refreshing interval for entries of dynamic IP-to-MAC bindings display dhcp relay s

11 # Enable the DHCP relay agent on GigabitEthernet 0/1. [DeviceA] interface gigabitethernet 0/1 [DeviceA-GigabitEthernet0/1] dhcp select relay # Cor

6 To do… Use the command… Remarks Enter system view system-view — Enable the ARP entry check arp check enable Optional By default, ARP entry check

12 NOTE: You need to perform corresponding configurations on the DHCP server to make the Option 82 configurations function normally. Troubleshooti

1 DHCP Client Configuration This chapter includes these sections: • Introduction to DHCP Client • Enabling the DHCP Client on an Interface • Displayi

2 Displaying and Maintaining the DHCP Client To do… Use the command… Remarks Display specified configuration information display dhcp client [ ver

3 # Enable DHCP. [DeviceA] dhcp enable # Exclude an IP address from automatic allocation. [DeviceA] dhcp server forbidden-ip 10.1.1.2 # Configure DHC

4 127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0 127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0

1 BOOTP Client Configuration This chapter includes these sections: • Introduction to BOOTP Client • Configuring an Interface to Dynamically Obtain a

2 A BOOTP client dynamically obtains an IP address from a BOOTP server in the following steps: 1. The BOOTP client broadcasts a BOOTP request, whic

3 Configuration procedure The following describes only the configuration on Device B serving as a client. # Configure GigabitEthernet 0/1 to dynamica

i Table of Contents DHCPv6 Overview···················································································································

ii

7 NOTE: Clearing ARP entries from the ARP table may cause communication failures. ARP Configuration Example Network requirements As shown in Figur

1 DHCPv6 Overview This chapter includes these sections: • Introduction to DHCPv6 • DHCPv6 Address/Prefix Assignment • Address/Prefix Lease Renewal •

2 1. The DHCPv6 client sends out a Solicit message that contains a Rapid Commit option, requesting that rapid assignment of address/prefix and other

3 Figure 3 Using the Renew message for address/prefix lease renewal As shown in Figure 3, at T1, the DHCPv6 client unicasts a Renew message to the

4 With an IPv6 address obtained through stateless address autoconfiguration, a device automatically enables the stateless DHCPv6 function after it re

1 DHCPv6 Server Configuration This chapter includes these sections: • Introduction to the DHCPv6 Server • DHCPv6 Server Configuration Task List • Con

2 Basic Concepts DHCPv6 multicast address The multicast address FF05::1:3 identifies all DHCPv6 servers on the site-local network. The multicast addr

3 static prefixes configured for specific clients, or have a prefix pool referenced for dynamic assignment from the specific prefix range. A DHCPv6 s

4 To do… Use the command… Remarks Create a prefix pool ipv6 dhcp prefix-pool prefix-pool-number prefix prefix/prefix-len assign-len assign-len Requ

5 Applying the Address Pool to an Interface After an address pool is applied to an interface, a prefix and other configuration parameters can be sele

6 DHCPv6 Server Configuration Example Network requirements As shown in Figure 8, the device serves as a DHCPv6 server, and assigns the IPv6 prefix, D

8 # View information about static ARP entries. [Device] display arp static Type: S-Static D-Dynamic A-Authorized IP Address

7 [Device-Vlan-interface2] ipv6 address 1::1/64 [Device-Vlan-interface2] quit # Create and configure prefix pool 1. [Device] ipv6 dhcp prefix-pool 1

8 2:2::3 Domain name: aaa.com SIP server address: 2:2::4 SIP server domain name: bbb.com # Display the information of prefix pool 1

1 DHCPv6 Relay Agent Configuration This chapter includes these sections: • Introduction to the DHCPv6 Relay Agent • Configuring the DHCPv6 Relay Agen

2 Operation of DHCPv6 Relay Agent Figure 10 Operating process of a DHCPv6 relay agent Take the process of rapid assignment involving two messages a

3 Configuration Procedure Follow these steps to configure the DHCPv6 relay agent: To do… Use the command… Remarks Enter system view system-view — E

4 DHCPv6 Relay Agent Configuration Example Network requirements As shown in Figure 11, the network address prefix of DHCPv6 clients is 1::/64, and th

5 Verification # After completing the above configurations, display DHCPv6 server address information on Router A. [Device-GigabitEthernet0/1] displa

1 DHCPv6 Client Configuration This chapter includes these sections: • Introduction to the DHCPv6 Client • Configuring the DHCPv6 Client • Displaying

2 NOTE: • For more information about the ipv6 address auto command, see IPv6 Basics Commands in the IP Services Volume. • It is not recommended t

3 # Enable the router to send RA messages. [Router-GigabitEthernet0/1] undo ipv6 nd ra halt Step2 Configure the device # Enable the IPv6 packet forw