H3C Technologies H3C S7500E Series Switches - Manual (Page 102)

13-13
Table 13-5 Restrictions about the configuration
Item Restrictions
Priority remarking based on
the source MAC address or
destination Mac address
z If a source MAC address–based traffic classification rule and a destination
MAC address–based traffic classification rule are configured for a UNI port
of an ONU, and if the uplink traffic satisfies both rules, only the destination
MAC address–based traffic classification rule applies even if the other one
has a higher priority.
z The configuration of destination MAC address–based priority remarking
takes effect globally. Namely, a destination MAC address–based traffic
classification rule configured for a UNI port of an ONU applies to incoming
traffic from all the other UNI ports of the ONU.
z In the case of source MAC address–based priority remarking for a UNI port,
the ONU adds the source MAC address and the corresponding UNI port
statically into its MAC address table; In the case of destination MAC
address–based priority remarking for a UNI port, the ONU adds the
destination MAC address and the PON port of the ONU statically into its
MAC address table.
z It does not support priority remarking based on the source MAC
addresses/destination MAC addresses that are multicast MAC addresses,
all-0 MAC addresses, broadcast MAC addresses, or the MAC address of
the ONU.
Priority remarking based on
Ethernet priority
When the VLAN operation mode is set to tag mode for a UNI and the CoS
value in the traffic classification rule is the same as the priority of the UNI, the
traffic classification rule will not take effect.
Priority remarking based on
VLAN ID
The configuration of VLAN ID–based priority remarking takes effect globally.
Namely, a VLAN ID–based traffic classification rule configured for a UNI port of
an ONU applies to incoming traffic from all the other UNI ports of the ONU.
Priority remarking based on
Ethernet type, DSCP, IP
protocol type, source IP
address/destination IP
address, or source L4 port
z The configuration of priority remarking based on Ethernet type, DSCP, IP
protocol type, source IP address/destination IP address, or source L4 port
takes effect globally. Namely, such a traffic classification rule configured for
a UNI port of an ONU applies to incoming traffic from all the other UNI ports
of the ONU.
z If multiple rules are matched on the same UNI of an ONU, the match
sequence is L3 Æ L4 Æ L2; if the rules are for the same layer, the rule with
the smallest index has the highest precedence.
z The device does not support priority remarking for different UNIs of an ONU
based on the same Ethernet type, DSCP, IP protocol type, source IP
address/destination IP address, or source L4 port.
z The device does not support priority remarking based on destination L4
ports.