7-14
MAX Administration Guide
Administering TCP/IP
Displaying Multicast information
Listing multicast clients
To display a list of multicast clients, enter the Show IGMP Clients command. For example:
ascend% show igmp clients
IGMP Clients
Client Version RecvCount CLU ALU
0(Mbone) 1 0 0 0
2 1 39 68 67
1 1 33310 65 65
Table 7-6 describes the output of the Show IGMP Clients command.
Members
Interface ID on which the membership resides. The number 0 repre-
sents the Ethernet interface. Other numbers represent WAN inter-
faces, numbered according to when they became active. The
interface labeled
Mbone
is the one on which the multicast router
resides.
Expire time
Time at which this membership expires. The MAX sends out IGMP
queries every 60 seconds, so the expiration time is usually renewed.
If the expiration time is reached, the entry is removed from the table.
Periods in this field indicates that the membership never expires.
Counts
Number of packets forwarded to the client, number of packets
dropped because of a lack of resources, and state of the membership
(the state is displayed for debugging purposes).
Table 7-5. Output of the Show IGMP Groups command (continued)
Field
Description
Table 7-6. Output of the Show IGMP Clients command
Field
Description
Client
Interface ID on which the client resides. The number 0 represents
the Ethernet. Other numbers are WAN interfaces, numbered accord-
ing to when they became active. The interface labeled
Mbone
is the
one on which the multicast router resides.
Version
Version of IGMP being used.
RecvCount
Number of IGMP messages received on that interface.
CLU
(CurrentLine
Utilization) and
ALU
(Average Line
Utilization)
Percentage of bandwidth utilized across this interface. If bandwidth
utilization is high, some IGMP packet types will not be forwarded.