Cisco Systems BC-281 manual DLSw+ with Ethernet Redundancy Configuration Example, BC-331

Configuring Data-Link Switching Plus

DLSw+ Configuration Examples

The following output of the show ip rsvp res command on the DLSWRTR1 verifies that the RSVP reservation was successful:

DLSWRTR1#show ip rsvp rese
To	From	Pro DPort		Sport Next Hop	I/F	Fi Serv BPS Bytes
10.2.17.1	10.14.25.2	TCP	2065	11003 10.14.25.2	Et1/1 FF		RATE	10K	28K
10.14.25.2	10.2.17.1	TCP	11003	2065		FF	RATE	10K	28K

DLSw+ with Ethernet Redundancy Configuration Example

Figure 144 shows that Router A, Router B, and Router C advertise their presence on the Ethernet via their Ethernet interfaces to the multicast MAC address 9999.9999.9999. Because Router B is the master router, it keeps a database of all circuits handled within the domain and grants or denies permission for new circuit requests for Router A and Router C. There is no special configuration required for the end stations or for the remote peer. Only the DLSw+ devices on the LAN need the extra configuration. Master Router B waits 1.5 seconds after it receives the first IWANTIT primitive before assigning the new SNA circuit to one of its ethernet redundancy peers because of the dlsw transparent timers sna 1500 command.

Figure 144 DLSw+ with Ethernet Redundancy

Workstation X

Router A Router B Router C

17955

Router D

Router A

dlsw local-peer peer id 10.2.24.2 dlsw remote-peer 0 tcp 10.2.17.1 interface loopback 0

ip address 10.2.24.2 255.255.255.0

int e1

ip address 150.150.2.1 255.255.255.0

dlsw transparent redundancy-enable 9999.9999.9999

Router B

dlsw local-peer peer-id 10.2.24.3

	Cisco IOS Bridging and IBM Networking Configuration Guide
78-11737-02		BC-331