Alcatel-Lucent 7450 Configuration Manual page 186

Router Interface Commands
If the optional destination parameter is specified and the destination address of an incoming IP
packet matches a route with QoS information the packet is classified to the fc and priority associated
with that route, overriding the fc and priority/profile determined from the sap-ingress or network qos
policy associated with the IP interface. If the destination address of the incoming packet matches a
route with no QoS information the fc and priority of the packet remain as determined by the sap-
ingress or network qos policy.
If the optional source parameter is specified and the source address of an incoming IP packet
matches a route with QoS information the packet is classified to the fc and priority associated with
that route, overriding the fc and priority/profile determined from the sap-ingress or network qos
policy associated with the IP interface. If the source address of the incoming packet matches a route
with no QoS information the fc and priority of the packet remain as determined by the sap-ingress or
network qos policy.
If neither the optional source or destination parameter is present, then the default is destination
address matching.
The functionality enabled by the qos-route-lookup command can be applied to IPv4 packets or IPv6
packets on an interface, depending on whether it is present at the interface context (applies to IPv4)
or the interface>ipv6 context (applies to IPv6). The ability to specify source address based QoS
lookup is not supported for IPv6. Subscriber management group interfaces also do not support the
source QPPB option.
The no form of the command reverts to the default.
Default destination
Parameters
source — Enables QoS classification of incoming IP packets based on the source address matching a
destination — Enables QoS classification of incoming IP packets based on the destination address
tcp-mss
Syntax tcp-mss mss-value
no tcp-mss
Context config>router>if
config>router>if>ipv6
Description This command statically sets the TCP maximum segment size (MSS) for TCP connections originated
from the associated IP interface to the specified value.
The no form of the command removes the static value and allows the TCP MSS value to be
calculated based on the IP MTU value by subtracting the base IP and TCP header lengths from the IP
MTU value (tcp_mss = ip_mtu – 40).
Default no tcp-mss
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route with QoS information.
matching a route with QoS information.
7450 ESS Router Configuration Guide