Cabletron Systems 6500 - Manual (Page 58)

3-10 SmartSwitch 6500 User Guide
Creating an Emulated LAN IP Over ATM and LANE
Best Effort Elan Join Test
The following describe the Best Effort test.
1. Does the client specify the name of the ELAN it wants to join?
- If yes, check whether an ELAN exists by that name. If an ELAN exists by that name, assign the
client to the ELAN. If no ELAN exists by that name, assign the client to the default ELAN
(ELAN 0).
- If no, check the client against the configuration information stored by the add lecselanlec
command (see The LECSELANLEC Table, on page -11). If an entry exists that corresponds to
the client, assign the client to the ELAN indicated. If the client does not correspond to an entry,
assign it to the default ELAN (ELAN 0).
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 3-1
lists the ELAN join policies that can be configured on the SmartSwitch 6500.
Note For detailed information on each of the commands that ELAN join policies
interacts with, see the command descriptions in the SmartSwitch 6500 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
Table 3-1 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.