Configuration Guide Configuring IPv4/IPv6 REF
9 Configuring IPv4/IPv6 REF
9.1 Overview
On products incapable of hardware-based forwarding, IPv4/IPv6 packets are forwarded through the software. To optimize
the software-based forwarding performance, Ruijie introduces IPv4/IPv6 express forwarding through software (Ruijie
Express Forwarding, namely REF).
REF maintains two tables: forwarding table and adjacency table. The forwarding table is used to store route information. The
adjacency table is derived from the ARP table and IPv6 neighbor table, and it contains Layer 2 rewrite(MAC) information for
the next hop..
REF is used to actively resolve next hops and implement load balancing.
Protocols and Standards
N/A
9.2 Applications
During network routing, when a route prefix is associated with multiple next hops, REF can
implement load balancing among the multiple next hops.
9.2.1 Load Balancing
Scenario
As shown in Figure 9-1, a route prefix is associated with three next hops on router A, namely, link 1, link 2, and link 3. By
default, REF implements load balancing based on the destination IP address. Load balancing can be implemented based on
the source IP address and destination IP address as well.
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