IP Router Configuration
7750 SR OS Router Configuration Guide Page 105
Syntax tos-marking-state {trusted | untrusted}
no tos-marking-state
Context config>router>interface
Description This command is used on a network IP interface to alter the default trusted state to a non-trusted state.
When unset or reverted to the trusted default, the ToS field will not be remarked by egress network IP
interfaces unless the egress network IP interface has the remark-trusted state set, in which case the
egress network interface treats all IES and network IP interface as untrusted.
When the ingress network IP interface is set to untrusted, all egress network IP interfaces will remark
IP packets received on the network interface according to the egress marking definitions on each
network interface. The egress network remarking rules also apply to the ToS field of IP packets
routed using IGP shortcuts (tunneled to a remote next-hop). However, the tunnel QoS markings are
always derived from the egress network QoS definitions.
Egress marking and remarking is based on the internal forwarding class and profile state of the packet
once it reaches the egress interface. The forwarding class is derived from ingress classification
functions. The profile of a packet is either derived from ingress classification or ingress policing.
The default marking state for network IP interfaces is trusted. This is equivalent to declaring no tos-
marking-state on the network IP interface. When undefined or set to tos-marking-state trusted, the
trusted state of the interface will not be displayed when using show config or show info unless the
detail parameter is given. The save config command will not store the default tos-marking-state
trusted state for network IP interfaces unless the detail parameter is also specified.
The no tos-marking-state command is used to restore the trusted state to a network IP interface. This
is equivalent to executing the tos-marking-state trusted command.
Default trusted
Parameters trusted — The default prevents the ToS field to not be remarked by egress network IP interfaces
unless the egress network IP interface has the remark-trusted state set
untrusted — Specifies that all egress network IP interfaces will remark IP packets received on the
network interface according to the egress marking definitions on each network interface
unnumbered
Syntax unnumbered [ip-address | ip-int-name]
no unnumbered
Context config>router>interface ip-int-name
Description This command sets an IP interface as an unnumbered interface and specifies the IP address to be used
for the interface.
To conserve IP addresses, unnumbered interfaces can be configured. The address used when
generating packets on this interface is the ip-addr parameter configured.
An error message will be generated if an unnumbered interface is configured, and an IP address
already exists on this interface.
The no form of the command removes the IP address from the interface, effectively removing the
unnumbered property. The interface must be shutdown before no unnumbered is issued to delete the
IP address from the interface, or an error message will be generated.