S Series Switches
iStack Technology White Paper
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
The relay mode can be implemented in two ways: single switch as the MAD relay agent and
two stacks as MAD relay agents of each other.
The MAD relay agent is a switch that supports the MAD relay function. Currently,
S2750&S5700&S6700 series switches support this function.
Two stacks can function as a proxy of each other to implement MAD. The two stacks must be
configured with different MAD domain IDs.
Figure 2-18 Single switch as the MAD relay agent
SwitchA SwitchB
iStack
MAD link
iStack link
SwitchC
SwitchD
Eth-Trunk
Figure 2-19 Two stacks as MAD relay agents of each other
SwitchD SwitchE
iStack
MAD link
iStack link
SwitchF
Eth-Trunk
SwitchA SwitchB
iStack
SwitchC
Domain ID 1
Domain ID 2