Cisco Systems BC-281 manual Static Paths, Static Resources Capabilities Exchange, BC-309

Configuring Data-Link Switching Plus

DLSw+ Configuration Task List

Static Paths

Static path definitions allow a router to setup circuits without sending explorers. The path specifies the peer to use to access a MAC address or NetBIOS name.

To configure static paths to minimize explorer traffic originating in this peer, use one of the following commands in global configuration mode, as needed:

Command	Purpose
Router(config)# dlsw mac-addr mac-addr{ring	Configures the location or path of a static MAC address.
ring number remote-peer {interface serial
number ip-addressip-address} rif rif string
group group}
or	or
Router(config)# dlsw netbios-name netbios-name	Configures a static NetBIOS name.
{ring ring number remote-peer {interface
serial number ip-address ip-address} rif rif
string group group}

Static Resources Capabilities Exchange

To reduce explorer traffic destined for this peer, the peer can send other peers a list of resources for which it has information (icanreach) or does not have information (icannotreach). This information is exchanged as part of a capabilities exchange.To configure static resources that will be exchanged as part of a capabilities exchange, use one of the following commands in global configuration mode, as needed:

Command	Purpose
Router(config)# dlsw icannotreach saps sap	Configures a resource not locally reachable by the router.
[sap...]
or	or
Router(config)# dlsw icanreach {mac-exclusive	Configures a resource locally reachable by the router.
netbios-exclusive mac-address mac-addr[mask
mask] netbios-name name saps}

Filter Lists in the Remote-Peer Command

The dest-macand dmac-output-listoptions allow you to specify filter lists as part of the dlsw remote-peercommand to control access to remote peers. For static peers in direct, FST, or TCP encapsulation, these filters control which explorers are sent to remote peers. For dynamic peers in TCP encapsulation, these filters also control the activation of the dynamic peer. For example, you can specify at a branch office that a remote peer is activated only when there is an explorer frame destined for the Media Access Control (MAC) address of an FEP.

The dest-macoption permits the connection to be established only when there is an explorer frame destined for the specified MAC address. The dmac-output-listoption permits the connection to be established only when the explorer frame passes the specified access list. To permit access to a single MAC address, use the dest-macoption, because it is a configuration “shortcut” compared to the dmac-output-listoption.

	Cisco IOS Bridging and IBM Networking Configuration Guide
78-11737-02		BC-309