Nortel 15000 参考指南
show dvmrp tunnels
308689-B Rev 00
45
Data Encapsulation
Mode that DVMRP uses to encapsulate a tunneled
multicast datagram:
•
multicast datagram:
•
IP-in-IP -- DVMRP encapsulates the tunneled multicast
datagram in an IP unicast datagram (ip-in-ip).
datagram in an IP unicast datagram (ip-in-ip).
•
LSSR -- DVMRP loosely encapsulates multicast
datagrams using the LSSR option.
datagrams using the LSSR option.
Control Encapsulation
Encapsulation mode for IGMP control packets:
•
•
No-encaps -- IGMP sends control messages in regular
IGMP packets with the IP protocol type set to
IP_PROTOCOL_IGMP.
IGMP packets with the IP protocol type set to
IP_PROTOCOL_IGMP.
•
Encaps -- IGMP encapsulates control messages inside
IP packets with the IP protocol type set to
IP_PROTOCOL_IPINIP.
IP packets with the IP protocol type set to
IP_PROTOCOL_IPINIP.