Services
7750 SR OS Services Guide Page 39
• IGMP snooping is not supported on a default SAP. This would require remembering
VLAN tags per hosts. By not allowing IGMP snooping of this SAP, all IGMP packets will
be transparently forwarded.
• This type of SAP is mutually exclusive with a SAP defined by explicit null encapsulation
(for example, 1/1/1:0). This avoids conflict as to which SAP untagged frames should be
associated.
Services and SAP Encapsulations
:
Port Type Encapsulation
Ethernet Null
Ethernet Dot1q
Ethernet Q-in-Q
SONET/SDH IPCP
SONET/SDH BCP-null
SONET/SDH BCP-dot1q
SONET/SDH ATM
SONET/SDH Frame Relay
SONET/SDH Cisco HDLC
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