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Title: How can I inherit the planned network addresses during the network reconstruction for the simplified campus network? [Print this page]

Author: admin Time: 2017-5-3 17:23
Title: How can I inherit the planned network addresses during the network reconstruction for the simplified campus network?
How can I inherit the planned network addresses during the network reconstruction for the simplified campus network?

Author: admin Time: 2017-5-3 17:24

The DHCP scheme has the following changes:

CLI changes: Besides the original DHCP pool configurations, the following configuration commands are added:

address-manage

match ip default 1.1.0.0 255.255.254.0---------------------------------------Global configuration

match ip 1.1.1.1 255.255.255.255 Gi0/1 vlan 1,11-20----------------------Interface+VLAN configuration

match ip 1.1.1.2 255.255.255.255 Gi0/1-------------------------------------Router interface configuration (temporarily not supported)

Changes in implementation:

1) In versions earlier than 11.x, the addresses in the subvlan-address-range range are allocated as follows. The association with the DHCP is canceled. You do not need to focus on these messages. The address allocation is not subject to the configurations. The original configuration commands are as follows:

vlan 2

supervlan

subvlan 21-29

vlan 24

subvlan-address-range 20.1.1.1 20.1.1.100

2) If the address-manage command is not configured, the DHCP allocation scheme adopts the original DHCP pool process.

3) If only the default rule in the address-manage command is configured, all interfaces are allocated based on the default rule. When this command is configured, the existing address is not deleted. When this command is deleted, the existing address is not deleted and the address allocation is based on the rule upon the next user request.

4) If only the interface+VLAN in the address-manage command is configured, addresses are allocated to users accessed through the interfaces in the specific VLANs. Addresses are not allocated to users accessed through the interfaces in other VLANs. When this command is configured, the existing address is not deleted. When this command is deleted, the existing address is not deleted and the address allocation is based on the rule upon the next user request.

5) If the default rule and interface+VLAN in the address-manage command are configured, for the interfaces that match the interface+VLAN rule, the addresses are allocated according to the rules. For interfaces in other VLANs, the addresses are not allocated. When this command is configured, the existing address is not deleted. When this command is deleted, the existing address is not deleted and the address allocation is based on the rule upon the next user request.

• Software limitation:

Assume that the configurations exist:

match ip 1.1.1.0 255.255.255.0 Gi0/1 vlan 2-10

match ip 2.1.1.0 255.255.255.0 Gi0/1 vlan 11-20

Assume that PC1 belongs to VLAN11. If the static IP address is 1.1.1.0/24, the PC cannot normally communicate with the network. If the address-manage command is configured, it is equivalent to enable the filter entry, and the interface filters packets according to the rules. Therefore, during the deployment, this limitation shall be noticed.

Author: rockleousa@gmai Time: 2023-9-20 17:00

admin replied at 2017-5-3 17:24
The DHCP scheme has the following changes:CLI changes: Besides the original DHCP pool configurations ...

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