System information

82 IBM and Cisco LAN Switching: Interoperability and Migration Guide
The LECS has a security function. By creating the LECS/LES Interface, a
LEC has to be validated by the LECS, to join a LES and become a member of
the ELAN. The criteria for validation is the LES Policy.
Figure 54. Creating LECS/LEC Security
By creating this feature, we force both of the LECs to connect the LECS using
the validation of the policy ELAN name (S1Ethernet and S1TokenRing). We
wanted the Cisco LEC to join our ELAN using ILMI to get the LECS, and then
the ELAN name S1Ethernet to get the LES ATM address.