Cisco Systems 1000 Series 用户手册
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Cisco ASR 1000 Series Aggregation Services Routers Software Configuration Guide
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Chapter 23 PPP Half-Bridge on the Cisco ASR 1000 Series Routers
Prerequisites for PPP Half-Bridge on the Cisco ASR 1000 Series Routers
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Prerequisites for PPP Half-Bridge on the Cisco ASR 1000 Series
Routers
Routers
PPP encapsulation must be enabled under the interface to use PPP half-bridge on ASR 1000 Series
Routers.
Routers.
Information About PPP Half-Bridge on the Cisco ASR 1000 Series
Routers
Routers
Figure 1 shows a half-bridge configuration. The router port connecting to the bridge is configured as a
serial interface to the PPP half-bridge. The interface functions as a virtual node on the Ethernet
subnetwork on the bridge. The serial interface has an IP address associated with the Ethernet
subnetwork.
serial interface to the PPP half-bridge. The interface functions as a virtual node on the Ethernet
subnetwork on the bridge. The serial interface has an IP address associated with the Ethernet
subnetwork.
Figure 23-1
PPP Half-Bridge Configuration
When a packet destined to the Ethernet arrives at the PPP half-bridge, it is converted to Ethernet packets,
encapsulated in PPP frames, and sent on the Ethernet bridge link. The PPP full-bridge decapsulates PPP
header, and forwards the Ethernet packet with bridge functionality.
encapsulated in PPP frames, and sent on the Ethernet bridge link. The PPP full-bridge decapsulates PPP
header, and forwards the Ethernet packet with bridge functionality.
Ethernet
364323
PPP Half-Bridge
PPP/MP
PPP Full-Bridge
Host
(101.0.0.2)
Serial
Output
101.0.0.1
101.0.0.4
101.0.0.4