Configuring Service Chaining Using DHCP Services on VLANs
Using DHCP services, you need not manually configure the IP addresses on the VNF
interfaces to achieve service-chaining. Enable DHCP clients on the glue bridge interfaces
within the VNF for an IP address to be assigned from the DHCP pool. Based on the IP
subnet, the IRB interface on the VLAN is automatically mapped to the corresponding
subnet dhcp pool.
To configure service chaining:
1. Create a VLAN with a VLAN ID none.
set host-os vlans vlan-name vlan-id none
NOTE: To use the DHCP pooling feature, the VLAN ID must be set to none.
2. Create IRB interfaces on the hypervisor
set host-os interfaces irb unit logical-unit-number family inet address inet-address
set host-os vlans vlan-name l3-interface irb. logical-interface-number
3. Specify the IP address pool to be used:
set access address-assignment pool p4 family inet network network-address
set access address-assignment pool p4 family inet range r4 low start-IP-address
set access address-assignment pool p4 family inet range r4 high end-IP-address
4. Attach an interface on the VNF to the VLAN to complete the service chain:
set virtual-network-functions vnf-name interfaces ethx mapping vlan mode [access|trunk]
set virtual-network-functions vnf-name interfaces ethx mapping vlan members list
5. Enable the DHCP client on the VNF.
To check the assigned IP address, use the show system visibility vnf <vnf> command.
Related
Documentation
Understanding Service Chaining on Disaggregated Junos OS Platforms on page 153•
• Example: Configuring Service Chaining Using VLANs on NFX250 Network Services
Platform on page 156
155Copyright © 2017, Juniper Networks, Inc.
Chapter 7: Service Chaining
To Next Page
Loading...
