Cisco SCE 2000 4/8xFE Uživatelský manuál stáhnout pdf (Strana 22)

Limitations and Restrictions

Release Notes for Cisco Service Control Operating System (SCOS) 2.5.10

OL-7085-08

Limitations and Restrictions

• The upgrade to the various SCOS 2.5.x releases may include re-initialization of the SCE

1000 or SCE 2000 hardware Bypass module. This re-initialization process may cause a

failure of the GBE link where the system stalls for a period of less than 1 sec.

The table below states the various cases when these re-initialization may occur (marked as

"Yes")

From

2.5.0 2.5.1 2.5.2 2.5.5 2.5.6 2.5.7 2.5.8 2.5.9 2.5.10

2.5.0

- Yes Yes Yes Yes Yes Yes Yes Yes

2.5.1

- - No No Yes Yes Yes Yes Yes

2.5.2

- - - No Yes Yes Yes Yes Yes

2.5.5

- - - - Yes Yes Yes Yes Yes

2.5.6

- - - - - Yes Yes Yes Yes

2.5.7

- - - - - - Yes Yes Yes

2.5.8

Yes Yes

2.5.9

Yes

• The SCE platform may experience a reboot when a port scan operation is performed on the

SCEs management port. This reboot is initiated by the SCE platform due to scheduling

optimization for detecting failover conditions in periods of less than 1 second in a

configuration of two cascaded SCE platforms.

The following is recommended:

• Use IP access lists to eliminate port scans that take place due to actual attacks.

• If the system administrator needs to perform a port scan operation as part of a security

check, it is advisable to disable the SCE platform watchdog only for the period of time in

which the port scan is performed, using the following CLI commands:

configure/interface linecard 0/0 no watchdog

configure/watchdog software-reset disabled

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Cisco SCE 2000 4/8xFE Uživatelský manuál Strana 22