Здравствуйте!
Есть Cisco 5300

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Cisco Internetwork Operating System Software
IOS (tm) 5300 Software (C5300-IS-M), Version 12.3(1a), RELEASE SOFTWARE (fc1)
Image text-base: 0x6000894C, data-base: 0x6155A000
ROM: System Bootstrap, Version 12.0(2)XD1, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
BOOTLDR: 5300 Software (C5300-BOOT-M), Version 12.1(3), RELEASE SOFTWARE (fc1)
cisco AS5300 (R4K) processor (revision A.32) with 131072K/16384K bytes of memory.
R4700 CPU at 150Mhz, Implementation 33, Rev 1.0, 512KB L2 Cache
Channelized E1, Version 1.0.
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
Primary Rate ISDN software, Version 1.1.
Backplane revision 2
1 Ethernet/IEEE 802.3 interface(s)
1 FastEthernet/IEEE 802.3 interface(s)
219 Serial network interface(s)
8 Channelized E1/PRI port(s)
60 DSP(s), 120 Voice resource(s)
128K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
8192K bytes of processor board Boot flash (Read/Write)
)

С 8-мью Е1 портами. Примерно раз в сутки – зависает и не отвечает ни по одному интерфейсу.
Подскажите, пожалуйста, как можно выявить проблему. Какую диагностику провести?
Заранее огромное спасибо!