Cabletron Systems Smart 04-0053-01 - Manual (Page 30)

2-12 SmartSwitch ATM User Guide
Creating an Emulated LAN IP Over ATM and LANE
Note If the default ELAN (ELAN 0) has been deleted, the client is dropped.
By using ELAN join policies, clients attempting to join LANE services can be assigned to specific ELANs. Table 2-1
lists the ELAN join policies that can be configured on an ATM SmartSwitch.
Note For detailed information on each of the commands that ELAN join policies
interacts with, see the command descriptions in the SmartSwitch ATM Reference
Manual.
You can give each ELAN join policy a priority value to determine its hierarchy among other ELAN join policies. If
you define several ELAN join policies, the policy with the greatest priority value is tried first. If that policy fails, the
policy with the next greatest priority value is attempted, and so on. ELAN join policies with the same priority value
are ANDed together. For example, if three join policies are create, each with the same priority value, a client requesting
LANE services must meet the criteria of all three policies to be assigned an ELAN. If the client fails to meet the
requirements of all three policies, the policy with the next lowest priority value will attempt to assign the client to an
ELAN.
Table 2-1 ELAN Join Policies
Policy No. ELAN Join Policy Information Source Checked
1 Best Effort Default ELAN policy. Checks configuration information stored by the add
lecselanlec command and during ELAN creation ( add elan command).
2 By ATM Address Checks configuration information stored by the add lecselanlec command.
3 By MAC Address Checks configuration information stored by the add lecselanlec command.
4 By Route Descriptor Checks configuration information stored by the add lecselanlec command.
5 By LAN Type Checks configuration information stored during ELAN creation ( add elan
command).
6 By Packet Size Checks configuration information from the add lecspacketsize command.
7 By ELAN Name Checks configuration information stored by the add lecselannametable
command.