Panasonic 324566-A - Manual (Page 65)

Nortel Secure Router 8012
Hardware Description
4 Boards
Issue 5.3 (6 April 2009) Nortel Networks Inc. 4-7
Slot number Working
mode
1 2 and 4 3, 5, and 7 6 and 8
1xOC3/STM1
ATM(SFP)
1x155 POS CPOSCT1
(SFP)
1xOC3/STM1
ATM(SFP)
1x155 POS
During initialization, the system mode is determined as follows: The router scans slot 1, 3, 5, and 7 in
sequence; when the first HIC is found, the router determines the system working mode according to the
card type; in the successive scanning, if the router finds that an HIC in a slot breaks the card mixture rule,
the slot is marked as ABNORMAL and is not initialized.
During hot swapping, the system mode is determined as follows: The router detects whether the type of
card that is inserted into slot 1, 3, 5, or 7 conflicts with the current system mode; if yes, the slot is
marked as ABNORMAL and is not initialized.
4.1.2 Logical relationship among boards
Figure 4-3 shows the logical relationship among the boards of a Secure Router 8012.