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DES-7200 Configuration Guide Chapter 7 Policy-based Routing
Configuration
7-2
7.1.2.2 Routing Map Policy Matching Mode
When you configure the routing map, you can specify the match mode of a policy
as permit or deny, which is described as below:
Permit: Apply the corresponding set rule to the IPv4/v6 packets meeting the
match rules of the policy. If no match rule is met, the system applies the next
policy to packets.
Deny: If IPv4/v6 packets meet all match statements, the system performs
common routing rather than policy-based routing.
IPv4/IPv6 packets are matched by the priority of every policy of the routing map in
descending order. If the packets do not match any policy of the routing map, the
system performs common routing.
7.1.2.3 Next Hop Rules
Policy-based routing offers two forwarding rules-set {ip | ipv6} next-hop and set
{ip | ipv6} default next-hop, which set the next hop and the egress, respectively.
set {ip | ipv6} next-hop: Configure the policy-based routing’s next hop IPv4/IPv6
address, which takes precedence over common routes. The IPv4/v6 packets
meeting the match rule received on the interface are first forwarded to the next
hop specified by the set {ip | ipv6} next-hop command, no matter whether the
real routing of the packets in the routing table and the next hop specified by the
policy-based route is valid or not.
set {ip | ipv6} default next-hop: The policy-based routing specified by this
command is of the priority lower than common route but higher than default route.
For the packets meeting the match rule received on the interface, if routing in the
routing table is failed or the default route is used, these packets will be forwarded
to the next hop specified by this command.
The next hops specified by these two rules must be direct or otherwise the
configuration does not take effect.
The priority is subject to the order of set {ip | ipv6} next-hop > network route/host
route > set {ip | ipv6} default next-hop >default route. These two commands can
be configured simultaneously, but only the one of higher priority takes effect.
7.1.2.4 Load Balancing Mode for
Policy-based Routing Next Hop
More than one next hop can be configured in the sequence of a route map, and
one of the following load balancing modes can be configured among them.
Redundant backup: Only one next hop takes effect at a time if there are many
next hops. Once the active next hop failed, another next hop will take over its