Nortel Agent Greeting NTVQ09AB, Руководство по техническому обслуживанию и устранению неисправностей

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Troubleshooting Agent Greeting Page 55 of 66
Agent Greeting Card Maintenance and Troubleshooting Guide
Multi-Card operation across routers
Changing Multi-cast parameters
Agent Greeting multicast packets have their TTL (Time To Live) values set
to 1 by default. This ensures that the multicast traffic from Agent Greeting is
contained within a single subnet. In some setups it may be required to have
server cards and client cards separated by routers. To facilitate this the TTL
value must be made greater than 1. Each time the packet traverses a router this
value is decremented by 1. If a router sees a packet with a TTL of 1 it silently
drops the packet. This protects networks from proliferation of broadcast and
multicast packets. If you wish to propagate the multicast packets across
routers then you must set the TTL to a value of the number of routers to be
traversed plus one.
This can be done using the
mcShellSetMcOptions
command from the
maintenance port. This command also allows the multicast address and port
number to be changed. Table 6 on page 25 provides further information on
multi-card commands.
Agent Greeting card spontaneous reboots
Cards may reboot spontaneously in the following conditions :
• when the ethernet driver has reported an invalid Ethernet address error
(FF:FF:...:FF) and after a timeout of 15 minutes without receiving any
Multicast frames.
• when a card (Unassigned or Client) is distributed a keycode by the Agent
Greeting Server card, it will then be forced to reboot by the Server.
• when a Client is released by its Server : its files are erased (it becomes
Unassigned) and the card is asked to reboot by the Server.
• after a load upgrade, the mcUpgradePCMCIA utility automatically
causes the cards to reboot.
In addition cards can be rebooted from the Browser:
• when the operator clicks on "Reset" button, the Server and every card in
the group will reboot.
• after a new group keycode is entered.