H3C Technologies H3C MSR 5600 - Manual (Page 15)

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C: Caller-IP = 192.167.0.0, mask = 255.255.0.0
When a POS terminal sends packets with source IP address 192.168.1.2, the packets are counted for both
item A and item B.
Statistics based on caller numbers
This method collects statistics for POS terminals that do not use TCP access. When POS terminals transact
with the FEPs, the router counts the packets based on the configured caller numbers. Only packets
matching the caller numbers are counted.
Assume you define the following caller numbers:
A: Caller-ID = 82770009
B: Caller-ID = 82770008
C: Caller-ID = 82770007
To be counted in B, POS terminal packets must have the caller number 82770008.
Statistics based on terminal templates
This method collects statistics only for packets exchanged with POS terminals. The statistics include the
counts for the following items:
• Received packets, sent packets, and error packets
• Error packets due to application mapping failures
• Discarded packets due to full buffer
• Discarded packets due to link failures
Announce packets sent to POS terminals from the router
Statistics collection for a terminal template applies to all instances that use the terminal template.
Statistics based on application templates
This method collects statistics only for packets exchanged with FEPs. The statistics include the counts for
the following items:
• Received packets, sent packets, and error packets
• Error packets due to distributing and processing failures
• Discarded packets due to full buffer
• Discarded packets due to link failures
Statistics collection for an application template applies to all instances that use the application template.
FEP backup
If the router cannot reach the FEP because of FEP or link failure, the ongoing transaction fails. To solve this
problem, you can configure a backup FEP on the router by using the backup app command.
FEP backup is applicable only to POS TCP access. When a POS terminal launches a transaction, the
router tries to establish a TCP connection with the primary or backup FEP, depending on the FEP state. If
the FEP is unreachable, the router places the FEP to blocked state and starts a quiet timer. Before the timer
expires, the FEP keeps in blocked state. After the timer expires, the router places the FEP to non-blocked
state. You can set an individual quiet timer for each FEP.
The router selects an FEP for a transaction by following these selection rules: