User's Manual

79-6
GR: Graceful restart. In order to transmitting uninterruptedly, require the router confer to extend to
support the GR ability.
MAD: Multi-Active Detection
79.1.4 VSF Typical Application
Figure 83-6: application of VSF in the campus data center
Figure 83-6 is the application of VSF in the campus internet. After using the VSF, it groups several facilities
together to become the single logic facility and connect to the virtual facility. After the predigestion, the
network do not need to use MSTP, VRRP protocol, it simplifies the network configuration. At the same time, it
relies on the cross facilities to aggregate the link. When some of the members are out of order, it will not rely
on MSTP, VRRP protocol etc constringency, thus in increase the reliability.
79.1.5 LACP MAD
lacp mad is the dynamic aggregation method based on lacp. Each member device of vsf has one port
connecting to the middle device at least.
Notice: The middle device must be the device which supports the extended function of lacp.