Configuration Guide

Table Of Contents
©2021 Extreme Networks, Inc. All rights reserved
October 2021
50
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Simply provision by enabling SPB multicast globally, enable MVPN on the VRF, and
enable IP SPB Multicast on some or all of the VLANs within the L3VSN
Only those VLANs that have IP SPB Multicast enabled can pass multicast traffic
o
It is not a requirement to enable IP Shortcuts in order to support IP Multicast in the
L3VSN
o
IPVPN creation and ISID assignment for the IPVPN is required – but the IPVPN does not
need to be enabled
o
Any device in the L3VSN can start a multicast stream
Note that you can still use any of the various IGMP features on the VRF VLAN
such as allow or deny certain IGMP group addresses
o
SMLT operation – does not apply to the ERS 4800 or ERS 5900
On the Primary IST BEB
Primary BVLAN traffic is forwarded to the SMLT and Single Homed
UNIs
Secondary BVLAN traffic is forwarded only to Single Homed UNIs
With SMLT Down on the Primary IST BEB, the primary IST BEB does
not forward any primary BVLAN traffic to the SMLT
With SMLT Down on the Primary IST BEB, the Secondary IST BEB
forwards both primary and secondary BVLAN traffic to the SMLT
On the Secondary IST BEB
Primary BVLAN traffic is forwarded only to Single Homed UNIs
Secondary BVLAN traffic is forwarded to the SMLT and Single Homed
UNIs
IP Shortcuts (GRT) with IP Multicast
o
All or a subset of VLANs within GRT can exchange IP multicast traffic between
themselves
o
Simple provision by enabling SPB multicast globally and enabling IP SPB Multicast on
some or all of the GRT VLANs
Only those VLANs that have IP SPB Multicast enabled can pass multicast traffic
o
It is not a requirement to enable IP Shortcuts in order to support IP multicast in the GRT
using SPB
o
Any device in the GRT can start a multicast stream
Note that you can still use any of the various IGMP features on the GRT VLAN
such as allow or deny certain IGMP group addresses