Checklist for Load Balancing in an MPLS Network

The overview includes when to configure load balancing, methods of load balancing and the parameters of load balancing. The following load-balancing options are also included:

• IPv4 address family (INET) in the hash key
• MPLS labels and IP payload in the hash key
• LSP bandwidth

1. Define a Load-Balancing Policy

[edit]
edit policy-options

[edit policy-options]
set policy-statement policy-name then load-balance      per-packet
show
commit

2. Apply the Load-Balancing Policy to the Forwarding Table

[edit]
edit routing-options

[edit routing-options]
set forwarding-table export policy-name
show
commit

3. Verify That Load Balancing Is Working

show configuration
show route
show route forwarding-table
show mpls lsp statistics
monitor interface traffic
clear mpls lsp statistics
clear interface statistics

Router Configurations for the Load-Balanced MPLS Network

show configuration | no-more

1. Configuring MPLS Labels and IP Payload to Load-Balance LSP Traffic

[edit]
edit forwarding-options hash-key

[edit forwarding-options hash-key]
set family mpls label-1
set family mpls label-2
set family mpls payload ip
show
commit

2. Configuring the IPv4 Address Family to Load-Balance LSP Traffic

[edit]
edit forwarding-options hash-key

[edit forwarding-options hash-key] set family inet layer-3 set family inet layer-4
show
commit

1. Example: Load-Balancing a Network with Aggregated Interfaces

• 1. Verifying the Operation of Load Balancing with Aggregated Interfaces

show configuration forwarding-options
show interfaces statistics interface-name detail
show mpls lsp statistics

• 2. Router Configurations for the Aggregated Interfaces Network

show configuration | no-more

2. Example: Load-Balancing a Network Using INET in the Hash Key

• 1. Verifying the Operation of INET Load Balancing

show configuration
show route forwarding-table destination destination
show route
monitor interface traffic
show mpls lsp statistics

• 2. Router Configurations for the INET Load-Balanced Network

show configuration | no-more

1. Configure Bandwidth to Unevenly Load-Balance Traffic

[edit]
edit protocols mpls

[edit protocols mpls]
set label-switched-path lsp-path-name bandwidth bps show

[edit protocols rsvp]
set load-balance bandwidth
show
commit

2. Verify the Operation of Uneven Bandwidth Load Balancing

show route protocol rsvp detail
show mpls lsp statistics

3. Router Configurations for Bandwidth Load Balancing

show configuration | no-more

show route | find mpls
monitor interface traffic
show mpls lsp statistics