C
HAPTER
44
| DHCP Commands
DHCP Client
– 1387 –
flag (M flag) and Other Stateful Configuration flag (O flag) received in
Router Advertisement messages will determine the information this
switch should attempt to acquire from the DHCPv6 server as described
below.
■
Both M and O flags are set to 1:
DHCPv6 is used for both address and other configuration settings.
This combination is known as DHCPv6 stateful, in which a DHCPv6
server assigns stateful addresses to IPv6 hosts.
■
The M flag is set to 0, and the O flag is set to 1:
DHCPv6 is used only for other configuration settings.
Neighboring routers are configured to advertise non-link-local
address prefixes from which IPv6 hosts derive stateless addresses.
This combination is known as DHCPv6 stateless, in which a DHCPv6
server does not assign stateful addresses to IPv6 hosts, but does
assign stateless configuration settings.
◆
DHCPv6 clients build a list of servers by sending a solicit message and
collecting advertised message replies. These servers are then ranked
based on their advertised preference value. If the client needs to
acquire prefixes from servers, only servers that have advertised
prefixes are considered.
◆
If the rapid commit option has been enabled on the switch using the
ipv6 dhcp client rapid-commit vlan
command, and on the DHCPv6
server, message exchange can be reduced from the normal four step
process to a two-step exchange of only solicit and reply messages.
E
XAMPLE
The following command submits a client request on VLAN 1.
Console#ipv6 dhcp restart client vlan 1
Console#
R
ELATED
C
OMMANDS
ipv6 address autoconfig (1408)
show ipv6 dhcp
duid
This command shows the DHCP Unique Identifier for this switch.
C
OMMAND
M
ODE
Privileged Exec
C
OMMAND
U
SAGE
◆
DHCPv6 clients and servers are identified by a DHCP Unique Identifier
(DUID) included in the client identifier and server identifier options.
Static or dynamic address prefixes may be assigned by a DHCPv6
server based on the client’s DUID.
Summary of Contents for ES3528MV2
Page 1: ...Management Guide www edge core com ES3528MV2 ES3528MV2 DC 28 Port Fast Ethernet Layer 2 Switch...
Page 2: ......
Page 4: ......
Page 48: ...CONTENTS 48...
Page 68: ...SECTION I Getting Started 68...
Page 78: ...CHAPTER 1 Introduction System Defaults 78...
Page 96: ...SECTION II Web Configuration 96...
Page 116: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 116...
Page 148: ...CHAPTER 4 Basic Management Tasks Resetting the System 148...
Page 192: ...CHAPTER 5 Interface Configuration VLAN Trunking 192 Figure 65 Configuring VLAN Trunking...
Page 226: ...CHAPTER 6 VLAN Configuration Configuring VLAN Translation 226...
Page 236: ...CHAPTER 7 Address Table Settings Configuring MAC Address Mirroring 236...
Page 270: ...CHAPTER 9 Congestion Control Automatic Traffic Control 270...
Page 300: ...CHAPTER 11 Quality of Service Attaching a Policy Map to a Port 300...
Page 418: ...CHAPTER 13 Security Measures DHCP Snooping 418...
Page 588: ...CHAPTER 15 IP Configuration Setting the Switch s IP Address IP Version 6 588...
Page 606: ...CHAPTER 16 IP Services Configuring the PPPoE Intermediate Agent 606...
Page 676: ...CHAPTER 17 Multicast Filtering Multicast VLAN Registration for IPv6 676...
Page 772: ...CHAPTER 20 System Management Commands Switch Clustering 772...
Page 802: ...CHAPTER 22 Remote Monitoring Commands 802...
Page 808: ...CHAPTER 23 Flow Sampling Commands 808...
Page 872: ...CHAPTER 24 Authentication Commands PPPoE Intermediate Agent 872...
Page 950: ...CHAPTER 25 General Security Measures Port based Traffic Segmentation 950...
Page 1002: ...CHAPTER 27 Interface Commands Power Savings 1002...
Page 1016: ...CHAPTER 28 Link Aggregation Commands Trunk Status Display Commands 1016...
Page 1046: ...CHAPTER 30 Congestion Control Commands Automatic Traffic Control Commands 1046...
Page 1058: ...CHAPTER 32 UniDirectional Link Detection Commands 1058...
Page 1064: ...CHAPTER 33 Address Table Commands 1064...
Page 1124: ...CHAPTER 35 ERPS Commands 1124...
Page 1168: ...CHAPTER 36 VLAN Commands Configuring Voice VLANs 1168...
Page 1182: ...CHAPTER 37 Class of Service Commands Priority Commands Layer 3 and 4 1182...
Page 1202: ...CHAPTER 38 Quality of Service Commands 1202...
Page 1360: ...CHAPTER 41 CFM Commands Delay Measure Operations 1360...
Page 1382: ...CHAPTER 43 Domain Name Service Commands 1382...
Page 1440: ...SECTION IV Appendices 1440...
Page 1468: ...COMMAND LIST 1468...
Page 1479: ......
Page 1480: ...ES3528MV2 ES3528MV2 DC E112013 ST R03...