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/** |
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/** |
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* \ingroup netdevice |
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* \ingroup netdevice |
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* |
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* |
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* \brief bridge net device for bridge things and testing |
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* \brief a virtual net device that bridges multiple LAN segments |
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* |
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* The BridgeNetDevice object is a "virtual" netdevice that aggregates |
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* multiple "real" netdevices and implements the data plane forwarding |
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* part of IEEE 802.1D. By adding a BridgeNetDevice to a Node, it |
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* will act as a "bridge", or "switch", to multiple LAN segments. |
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* |
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* By default the bridge netdevice implements a "learning bridge" |
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* algorithm (see 802.1D), where incoming unicast frames from one port |
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* may occasionally be forwarded throughout all other ports, but |
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* usually they are forwarded only to a single correct output port. |
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* |
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* \attention The Spanning Tree Protocol part of 802.1D is not |
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* implemented. Therefore, you have to be careful not to create |
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* bridging loops, or else the network will collapse. |
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* |
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* \attention Bridging is designed to work only with NetDevices |
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* modelling IEEE 802-style technologies, such as CsmaNetDevice and |
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* WifiNetDevice. |
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* |
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* \attention If including a WifiNetDevice in a bridge, the wifi |
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* device must be in Access Point mode. Adhoc mode is not supported |
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* with bridging. |
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*/ |
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*/ |
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class BridgeNetDevice : public NetDevice |
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class BridgeNetDevice : public NetDevice |
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{ |
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{ |
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static TypeId GetTypeId (void); |
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static TypeId GetTypeId (void); |
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BridgeNetDevice (); |
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BridgeNetDevice (); |
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/** \brief Add a 'port' to a bridge device |
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* |
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* This method adds a new bridge port to a BridgeNetDevice, so that |
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* the new bridge port NetDevice becomes part of the bridge and L2 |
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* frames start being forwarded to/from this NetDevice. |
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* |
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* \attention The netdevice that is being added as bridge port must |
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* _not_ have an IP address. In order to add IP connectivity to a |
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* bridging node you must enable IP on the BridgeNetDevice itself, |
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* never on its port netdevices. |
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*/ |
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void AddBridgePort (Ptr<NetDevice> bridgePort); |
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void AddBridgePort (Ptr<NetDevice> bridgePort); |
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// inherited from NetDevice base class. |
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// inherited from NetDevice base class. |