Allied Telesis AT-S63 - Manual (Page 584)

Chapter 31: Spanning Tree Protocol (STP) Commands
584 Section V: Spanning Tree Protocols
SET SWITCH MULTICASTMODE
Syntax
set switch multicastmode=[a|b|c|d]
Parameter
multicast mode Specifies the multicast mode. The options are:
a Discards all the ingress spanning tree BPDU
and 802.1x EAPOL packets.
b Forwards the ingress spanning tree BPDU and
802.1x EAPOL packets across all the VLANs
and the ports.
c Forwards ingress BPDU and EAPOL packets
only among the untagged ports of a VLAN
where an ingress port is a member.
d Forwards ingress BPDU and EAP packets on
both the tagged and untagged ports of a VLAN
where an ingress port is a member.
Description
This command controls the behavior of the switch or stack when
forwarding ingress spanning tree BPDU packets and 802.1x port-based
access control EAPOL packets when these features are disabled. Note
the following when setting this parameter:
 This parameter is only adjustable with this command. It cannot be
configured from the menus or web browser windows.
 The mode is set at the switch or stack level. It is not adjustable on a
per-port basis.
 Only one mode can be active at a time.
 The mode setting applies to the spanning tree protocol BPDUs when
STP, RSTP, and MSTP are disabled.
 The mode setting applies to the 802.1x port-based access control
EAPOL packets when 802.1x is disabled.
 There are four possible states: A, B, C, and D:
A - Discards all ingress spanning tree BPDU and 802.1x EAPOL packets
on all the ports. The switch or stack behaves as follows:
 If STP, RSTP, and MSTP are disabled, all the ingress BPDUs are
discarded.