# Before You Configure IPv6

Before you configure IPv6, you must create the lower-layer interfaces over which IPv6 traffic flows. For information about the modules that support IPv6:

- See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for modules supported on E120 and E320 routers.
- See ERX Module Guide, Appendix A, Module Protocol Support for modules supported on the ERX310, ERX710, ERX1410, and ERX1440 routers.

For example, to configure an ATM interface:

host1(config)#interface atm 1/0 host1(config-if)#atm sonet stm-1 host1(config-if)#no loopback host1(config-if)#atm clock internal chassis host1(config-if)#interface atm 1/0.10 host1(config-if)#atm pvc 10 0 20 aal5snap

See JunosE Link Layer Configuration Guide for information about configuring an ATM interface. See JunosE Physical Layer Configuration Guide for information about configuring an Ethernet interface.