Family Flags

The Family flags field, which provides information about the protocol family on the logical interface, displays one or more of the following values:

• DCU—Destination class usage is enabled.
• Dest-route-down—The software detected that the link is down and has stopped forwarding the link's interface routes.
• Down—Protocol is inactive.
• Is-Primary—Interface is the primary one for the protocol.
• MTU-Protocol-Adjusted—The effective MTU is not the configured value in the software.
• No-Redirects—Protocol redirects are disabled.
• Primary—Interface can be considered for selection as the primary family address.
• Protocol-Down—Protocol failed to negotiate correctly.
• SCU-in—Interface is configured for source class usage input.
• SCU-out—Interface is configured for source class usage output.
• Unnumbered—Protocol family is configured for unnumbered Ethernet. An unnumbered Ethernet interface borrows an IPv4 address from another interface, which is referred to as the donor interface.
• Up–Protocol is configured and operational.
• uRPF—Unicast Reverse Path Forwarding is enabled.