Cabletron Systems 04-0053-01 manual Configuring Lnni Distributed LES/BUS Servers, SW2 # show elan

Creating an Emulated LAN IP Over ATM and LANE

Similarly, enter the show elan 1 command on SW2 to obtain SW2’s LECS address

SW2 # show elan 1

ELAN 1

==============================================================================

ELAN Number	:	1
LECS Address	: 39:00:00:00:00:00:00:00:00:00:BF:BA:26:00:00:1D:BF:BA:26:01 — LECS address on SW2
LES Address	: 39:00:00:00:00:00:00:00:00:00:BF:BA:26:00:00:1D:BF:BA:26:03
ELAN Name	: elan1
ELAN Type	:	802.3
MTU	:	1516
Connection Method :		SVC
Distribute VPI/VCI:		0/0
Distribute Method :		PROXY
Multipoint	:	YES
Error Logging		: NO
Min TD Negotiation		: NO

SW2 #

8.On SW1 use the add lecsneighbor command to specify the ATM address of the LECS on SW2

SW1 # add lecsneighbor

NeighborATMAddress(): 39:00:00:00:00:00:00:00:00:00:bf:ba:26:00:00:1d:bf:ba:26:01

SW1 #

Similarly, on SW2 use the add lecsneighbor command to specify the ATM address of the LECS on SW1

SW2 # add lecsneighbor

NeighborATMAddress(): 39:00:00:00:00:00:00:00:00:00:a3:87:0b:00:00:1d:a3:87:0b:01

SW2 #

The LECSs on switch SW1 and SW2 are now configured for LNNI and are running redundantly. If, for example, LANE services goes down on SW1, its clients can rejoin the ELAN by registering with LANE services on SW2.

Use the show lecsneighborinfo command on any LNNI active switch running an LECS to see a list of known neighbor LECSs. For example, on SW1, entering show lecsneighborinfo shows information about SW2:

SW1 # show lecsneighborinfo

LECS Sync PMP VCC VPI/VCI : 0/48

	Outgoing	Incoming
Neighbor ATM Address	State	VPI/VCI

==============================================================================

39:00:00:00:00:00:00:00:00:00:BF:BA:26:00:00:1D:BF:BA:26:01 Active	0/49
SW1 #

Configuring LNNI Distributed LES/BUS Servers

Under LNNI each switch running an LECS is capable of supporting eight (8) switches running an LES/BUS on the same ELAN. LES/BUS neighbor information is distributed to the LES/BUS switches by the LECSs. However, server cache information is distributed among the LES/BUS servers themselves using SCSP (Server Cache Synchronization Protocol). To assure that SCSP information can be exchanged between all LES/BUS switches, the switches should be

2-22 SmartSwitch ATM User Guide