This feature uses a command in the route-policy hierarchy to set the forwarding class and optionally the priority associated with routes accepted by a route-policy entry. The command has the following structure:
fc fc-name [priority {low | high}]
The use of this command is illustrated by the following example:
config>router>policy-options
begin
community gold members 300:100
policy-statement qppb_policy
entry 10
from
protocol bgp
community gold
exit
action accept
fc h1 priority high
exit
exit
exit
commit
The fc command is supported with all existing from and to match conditions in a route policy entry and with any action other than reject, it is supported with next-entry, next-policy and accept actions. If a next-entry or next-policy action results in multiple matching entries, then the last entry with a QPPB action determines the forwarding class and priority.
A route policy that includes the fc command in one or more entries can be used in any import or export policy but the fc command has no effect except in the following types of policies:
VRF import policies:
config>service>vprn>vrf-import
BGP import policies:
config>router>bgp>import
config>router>bgp>group>import
config>router>bgp>group>neighbor>import
config>service>vprn>bgp>import
config>service>vprn>bgp>group>import
config>service>vprn>bgp>group>neighbor>import
RIP import policies:
config>router>rip>import
config>router>rip>group>import
config>router>rip>group>neighbor>import
config>service>vprn>rip>import
config>service>vprn>rip>group>import
config>service>vprn>rip>group>neighbor>import
As evident from above, QPPB route policies support routes learned from RIP and BGP neighbors of a VPRN as well as for routes learned from RIP and BGP neighbors of the base/global routing instance.
QPPB is supported for BGP routes belonging to any of the address families listed below:
IPv4 (AFI=1, SAFI=1)
IPv6 (AFI=2, SAFI=1)
VPN-IPv4 (AFI=1, SAFI=128)
VPN-IPv6 (AFI=2, SAFI=128)
A VPN-IP route may match both a VRF import policy entry and a BGP import policy entry (if vpn-apply-import is configured in the base router BGP instance). In this case the VRF import policy is applied first and then the BGP import policy, so the QPPB QoS is based on the BGP import policy entry.
This feature also introduces the ability to associate a forwarding-class and optionally priority with IPv4 and IPv6 static routes. This is achieved by specifying the forwarding-class within the static-route-entry next-hop or indirect context.
Priority is optional when specifying the forwarding class of a static route, but when configured it can only be deleted and returned to unspecified by deleting the entire static route.