Cisco Cisco Prime IP Express 8.3 Technical References
Setting this attribute to true is not recommended as creating
DHCPv6 clients requires this attribute be false (the default).
If true, when creating a new client the name must be one of
the following:
- A mac address (,,), typically
1,6,xx:xx:xx:xx:xx:xx
- A blob formatted value, such as xx:xx:xx:xx:xx:xx which
which will be converted to the mac address format
- The string 'default'
Any other name will return an error.
Note that this blob format conversion only applies when creating
a client and does not occur on client lookups.
If false, any name is allowed and is used exactly as specified.
The client name must match the lookup keys generated from the
client-lookup-id (or v6-client-lookup-id) expression.
DHCPv6 clients requires this attribute be false (the default).
If true, when creating a new client the name must be one of
the following:
- A mac address (,,), typically
1,6,xx:xx:xx:xx:xx:xx
- A blob formatted value, such as xx:xx:xx:xx:xx:xx which
which will be converted to the mac address format
- The string 'default'
Any other name will return an error.
Note that this blob format conversion only applies when creating
a client and does not occur on client lookups.
If false, any name is allowed and is used exactly as specified.
The client name must match the lookup keys generated from the
client-lookup-id (or v6-client-lookup-id) expression.
default = true
Controls the ability of the DHCP server to communicate with
clients that are on a different VPN from the server. Default
is true (enable).
If true, the server communicates with DHCP clients residing on
a different VPN by using an enhanced DHCP Relay Agent capability.
This enhanced DHCP Relay Agent capability is indicated by the
appearance of the server-id-override sub-option in
the relay agent information option (Option 82).
clients that are on a different VPN from the server. Default
is true (enable).
If true, the server communicates with DHCP clients residing on
a different VPN by using an enhanced DHCP Relay Agent capability.
This enhanced DHCP Relay Agent capability is indicated by the
appearance of the server-id-override sub-option in
the relay agent information option (Option 82).
dhcp-address-block
dhcp-address-block - Defines a contiguous range of IP address space
from which the DHCP server may allocate subnets
from which the DHCP server may allocate subnets
Synopsis
dhcp-address-block <name> create <address> [<attribute>=<value> ...]
dhcp-address-block <name> delete
dhcp-address-block list
dhcp-address-block listnames
dhcp-address-block listbrief
dhcp-address-block <name> show
dhcp-address-block <name> listsubnets
dhcp-address-block <name> get <attribute>
dhcp-address-block <name> set<attribute>=<value> [<attribute>=<value> ...]
dhcp-address-block <name> unset <attribute>
dhcp-address-block <name> enable <attribute>
dhcp-address-block <name> disable <attribute>
dhcp-address-block <name> delete
dhcp-address-block list
dhcp-address-block listnames
dhcp-address-block listbrief
dhcp-address-block <name> show
dhcp-address-block <name> listsubnets
dhcp-address-block <name> get <attribute>
dhcp-address-block <name> set<attribute>=<value> [<attribute>=<value> ...]
dhcp-address-block <name> unset <attribute>
dhcp-address-block <name> enable <attribute>
dhcp-address-block <name> disable <attribute>
Description
The dhcp-address-block command creates and sets attributes
for Network Registrar DHCP address blocks. The command applies
only to address block objects that are designated in the
DHCP server for subnet allocation to clients. When a DHCP server
receives a request to allocate a subnet to a client, it does so
by subdividing its available address-blocks. In this context,
a DHCP address block is a contiguous range of IP address space
that is delegated to the DHCP server for assignment. The DHCP
server expects to subdivide these DHCP address blocks for
delegation to some other server or device, or for its own use in
interaction with DHCP clients.
for Network Registrar DHCP address blocks. The command applies
only to address block objects that are designated in the
DHCP server for subnet allocation to clients. When a DHCP server
receives a request to allocate a subnet to a client, it does so
by subdividing its available address-blocks. In this context,
a DHCP address block is a contiguous range of IP address space
that is delegated to the DHCP server for assignment. The DHCP
server expects to subdivide these DHCP address blocks for
delegation to some other server or device, or for its own use in
interaction with DHCP clients.
DHCP address blocks can parent one or more subnets. Subnets are also
contiguous ranges of IP address space that are bound to a specific
client, usually a router or another DHCP server. DHCP address blocks
and subnets are similar to scopes in that they contain address ranges
and other attributes necessary to configure the DHCP client-server
interaction. Unlike scopes, DHCP address blocks and subnets do not
have address ranges available for assignment to DHCP clients and do
not contain reserved addresses.
contiguous ranges of IP address space that are bound to a specific
client, usually a router or another DHCP server. DHCP address blocks
and subnets are similar to scopes in that they contain address ranges
and other attributes necessary to configure the DHCP client-server
interaction. Unlike scopes, DHCP address blocks and subnets do not
have address ranges available for assignment to DHCP clients and do
not contain reserved addresses.
In a virtual private network (VPN) deployment where multiple VPNs use
the same private address space, you can use logically identical DHCP
address blocks simultaneously on multiple VPNs.
the same private address space, you can use logically identical DHCP
address blocks simultaneously on multiple VPNs.