Juniper JUNOSE SOFTWARE 10.2.2 - RELEASE NOTES 6-4-2010 Release Note page 36

JUNOSe 10.2.2 Release Notes
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Known Behavior
Multiple forwarding rules behavior for Release 5.2.0 and higher-numbered
releases:
Beginning with Release 5.2.0, the multiple rules behavior is designed so
that when a forwarding solution conflict occurs within a policy, such as
those described earlier, the second forwarding solution overwrites the
preceding solution. That is, the last forwarding rule configured for the given
classifier list within a policy is the forwarding behavior that is used. Also, a
warning message is now displayed when this type of conflict occurs.
Example 1—In this example, the filter rule action overwrites the forward
rule, and is therefore applied.
host1(config)#policy-list wstPolicyList
host1(config-policy-list)#forward classifier-group svaleClacl1
host1(config-policy-list)#filter classifier-group svaleClacl1
WARNING: This rule has replaced a previously configured rule.
host1(config-policy-list)#exit
host1(config)#
Example 2—In this example, three forwarding solution conflicts result in
rules being overwritten. The filter rule is the last rule configured, and is
therefore applied.
host1(config)#policy-list bostTwo
host1(config-policy-list)#forward classifier-group clacl5
host1(config-policy-list)#next-hop 1.1.1.1 classifier-group clacl5
WARNING: This rule has replaced a previously configured rule.
host1(config-policy-list)#next-interface atm 1/0.0 classifier-group clacl5
WARNING: This rule has replaced a previously configured rule.
host1(config-policy-list)#filter classifier-group clacl5
WARNING: This rule has replaced a previously configured rule.
host1(config-policy-list)#exit
host1(config)#
NOTE: When you upgrade the nonvolatile memory to Release 5.2.0 or later, the
upgrade removes eclipsed rules and rules whose behavior was not applied in the
previous release. This removal ensures that the postupgrade forwarding behavior
is the same as the preupgrade behavior.
NOTE: If you upgrade to Release 5.2.0 or later and then configure your router
using a script generated before Release 5.2.0, the postupgrade and preupgrade
forwarding behaviors might not be the same. The new Release 5.2.0 configuration
behavior is applied—the last policy rule configured for a given classifier list that
specifies a forwarding behavior is the only rule remaining.
The ES2 10G LM does not support the deprecated next-hop command.
You cannot configure classifier lists that reference multiple fields for a VLAN
policy list on the ES2 10G Uplink LM or the ES2 10G LM, with the exception of
traffic-class and color. The system incorrectly classifies VLAN policies that
classify using multiple fields. For example, an invalid policy list that references
multiple fields uses both color and user-packet-class, or one classifier list using
color and another using user-packet-class.