@Ronnie-Wong
I am using VIRL. here is a list of available interfaces
Router(config)# interface ?
Async Async interface
Auto-Template Auto-Template interface
BDI Bridge-Domain interface
BVI Bridge-Group Virtual Interface
CDMA-Ix CDMA Ix interface
CTunnel CTunnel interface
Dialer Dialer interface
GMPLS MPLS interface
GigabitEthernet GigabitEthernet IEEE 802.3z
Group-Async Async Group interface
LISP Locator/ID Separation Protocol Virtual Interface
LongReachEthernet Long-Reach Ethernet interface
Loopback Loopback interface
Lspvif LSP virtual interface
MFR Multilink Frame Relay bundle interface
Multilink Multilink-group interface
Null Null interface
Pseudowire Pseudowire Interface
Tunnel Tunnel interface
Vif PGM Multicast Host interface
Virtual-PPP Virtual PPP interface
Virtual-Template Virtual Template interface
I have the same question for Frame relay. I see here that there is a MFR interface. What is that? I activated it just out of curiosity and all the frame relay commands seem to be there.
Maybe I should set up a GNS3 lab alongside VIRL just for these types of situations.