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WEBSHARE 242W
71
Traps supported: Cold Start, Authentication Failure.
The following MIBs are supported:
• RFC 1213 (MIB-II):
System group
Interfaces group
Address Translation group
IP group
ICMP group
TCP group
UDP group
EGP (not applicable)
Transmission
SNMP group
• RFC1650 (EtherLike-MIB):
dot3Stats
• RFC 1493 (Bridge MIB):
dot1dBase group
dot1dTp group
dot1dStp group (if configured as spanning tree)
• RFC 1471 (PPP/LCP MIB):
pppLink group
pppLqr group
• RFC 1472 (PPP/Security MIB):
PPP Security Group)
• RFC 1473 (PPP/IP MIB):
PPP IP Group
• RFC 1474 (PPP/Bridge MIB):
PPP Bridge Group
• RFC1573 (IfMIB):
ifMIBObjects Group
• RFC1695 (atmMIB):
atmMIBObjects
• RFC 1907 (SNMPv2):
only snmpSetSerialNo OID
3.6.3.7.5 IGMP
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1
recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets
to a group of hosts on the network - not everybody and not just 1.
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish
membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC
2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If
you would like to read more detailed information about interoperability between IGMP version
2 and version 1, please see sections 4 and 5 of RFC 2236. The class D IP address is used to
identify host groups and can be in the range 224.0.0.0 to 239.255.255.255. The address
224.0.0.0 is not assigned to any group and is used by IP multicast computers. The address
224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts
(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP.
The address 224.0.0.2 is assigned to the multicast routers group.