Creating the Service Chain
Step-by-Step
Procedure
To configure the VNF interfaces and create the service chain:
1. Configure VM1’s LAN-side interface as a Layer 3 interface, and map it to the LAN-side
NIC interface. Include the virtual function (VF) setting to specify direct NIC-to-VM
connectivity. VNF must use the interfaces from eth2 through to eth9.
The hsxe interface is the configurable representation of the related NIC (sxe)
interface.
user@jdm> configure
[edit]
user@jdm# set virtual-network-functions vnf1 interfaces eth2 mapping hsxe0 virtual-function
2. Configure VM1’s WAN-side interface from sxe1 NIC as shown in Figure 15 on page 161.
user@jdm# set virtual-network-functionsvnf1 interfaces eth3 mapping hsxe1virtual-function
3. Similarly bring up VM2 with both interfaces eth2 and eth3 on sxe1 NIC.
user@jdm# set virtual-network-functions vnf2 interfaces eth2 mapping hsxe1 virtual-function
user@jdm# set virtual-network-functions vnf2 interfaces eth3 mapping hsxe1 virtual-function
4. Finally, configure the IP addresses and static routes for each interface of the VNFs,
and add routes to achieve the complete bidirectional path for the service chain.
Related
Documentation
• Understanding Service Chaining on Disaggregated Junos OS Platforms on page 153
• Disaggregated Junos OS VMs on page 6
• Understanding SR-IOV Usage on page 10
165Copyright © 2017, Juniper Networks, Inc.
Chapter 7: Service Chaining
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