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| Chapter 6 Using Multicast Manager 133 | |
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| Table 39 General tab fields (continued) | ||
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| Field | Description |
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| Robustness | Robust value (based on the network’s tendency to lose |
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| data). This value, along with the query interval, is used to |
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| determine the group membership timeouts. It should be |
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| set to that of the multicast router in the network. If more |
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| than one multicast router is within a VLAN and the robust |
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| values are different, set the Passport switch to the highest |
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| value. The range is 2 to 255. The default is 2. |
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| QueryInterval(sec) | In general, the time between queries sent to the host. this |
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| value is used to determine the multicast group |
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| membership timeouts. The real interval between queries |
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| is still dependent on the multicast router within the VLAN. |
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| Set this value to be the same as that of the multicast |
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| routers in the VLAN. If there are multiple multicast routers |
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| on the net, select the highest query interval value. The |
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| query interval is in seconds (1 to 65535) with a default of |
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| 125 seconds. |
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| MRouterPorts | Ports that have been configured as Multicast Router |
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| Ports. Such ports provide connectivity but do not have to |
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| be directly attached to a multicast router so the multicast |
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| data and group reports are forwarded to the router. |
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| ActiveMRouter | Active Multicast Router Ports are ports that provide |
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| connectivity but do not have to be directly attached to a |
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| multicast router. These ports include the Querier port and |
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| all ports in the forwarding state that were configured by |
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| the user, as well as those that were dynamically learned |
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| using receiving queries. |
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| ActiveQuerier | IP address of the last querier (multicast router) of this |
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| VLAN that was heard by the switch. |
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| QuerierPort | Port on which the LastQuerier is being heard. |
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| MRouterExpiration | Time remaining before the multicast router is aged out. If |
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| the switch does not receive any queries before this time |
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| expires, it flushes out all group memberships known to the |
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| VLAN. The Query Max Response Interval (obtained from |
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| the Queries received) is used as the timer resolution. |
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Receiver tab
The Receiver tab (Figure 60) provides information about IGMP group receivers.
Using Optivity Switch Manager, Release 1.1.0.0