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IT Information/Network Technical10

[Upgrade EX Switch] Stage 2 - Backup configuration SUMMARY: This article documents Stage 2 – Proactively Planning a Juniper EX Switch Upgrade. This will be the foresight to prevent losing current configuration on the switch while performing a Junos Software Upgrade. The discussion here centers on multiple methods of backing up the configuration on Juniper EX Switches. To go directly to other stages of the Junos upgrade on an EX switch, consult t.. 2013. 8. 6.
Cisco :: c2960 factory reset Cisco :: c2960 factory reset Switch# write erase Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]y[OK]Erase of nvram: complete Switch#Switch# reload System configuration has been modified. Save? [yes/no]: nProceed with reload? [confirm]y 참고: http://www.cisco.com/en/US/products/hw/switches/ps607/products_tech_note09186a00800c4546.shtml 2013. 5. 23.
Cisco :: Cisco c2960 IOS Recovery Cisco :: Cisco c2960 IOS Recovery 1. Bootloader mode 진입- power cable 연결- mode switch 15초간 push- Bootloader mode 진입 2. flash 내용 확인switch: flash_initswitch: dir flash:Directory of flash:/ 2 -rwx 6371328 Jan 1 1970 00:40:43 +00:00 c2960-lanlitek9-mz.122-46.SE.bin 3 -rwx 1784 Mar 1 1993 00:03:07 +00:00 config.text 4 -rwx 1921 Mar 1 1993 00:03:07 +00:00 private-config.text 5 -rwx 3096 Mar 1 1993 00:0.. 2013. 5. 23.
icmp protocol The Internet Protocol [IP] is not designed to be absolutely reliable. The purpose of these control messages [ICMP] is to provide feedback about problems in the communication environment, not to make IP reliable. There are still no guarantees that a datagram will be delivered or a control message will be returned. Some datagrams may still be undelivered without any report of their loss. The highe.. 2013. 5. 13.
tcpdump man page TCPDUMP Man Page 2013. 5. 6.