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limit. The ATM Routed Bridge Encapsulation feature is used to route IP over bridged RFC 1483 Ethernettraffic from a stub-bridged LAN. By reducing the size of the nonsecured network, this feature reducesthe security risk associated with normal bridging or IRB. With a single virtual circuit (VC) allocated to limita subnet, which could be as small as a single IP address, IP addresses in the subnet can be used to limitthe trust environment to the premises of a single customer.

command. Defaults No default behavior or valuesCommand Modes Interface configurationCommand HistoryExamples The following example configures the ATM Routed Bridge Encapsulation feature on an interface:interface atm 4/0.100 point-to-pointip address 172.16.5.9 255.255.255.0atm route-bridged ippvc 0/32protocol Protocol for which the route-bridge feature is enabled.Release Modification12.0(5)DC This command was introduced.12.1(2)T This command was integrated into Cisco IOS Release 12.1(2)T.ATM Routed Bridge EncapsulationGlossary8Cisco IOS Release 12.3(8)YGGlossarybridge group—A group of interfaces bridged together to emulate a multiport bridge.Bridge Group Virtual Interface—See BVI.BVI—Bridge Group Virtual Interface. The logical Layer 3-only interface