Kategorie: Cisco

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Nicht cisco GBICs/SFPs

Cisco will das man nur seine eigenen GBICs benutzt. Bei manchen 3rd Party SFPs gibt es dann Fehler:%PHY-4-UNSUPPORTED_TRANSCEIVER: Unsupported transceiver found in Gi1/0/1%GBIC_SECURITY_CRYPT-4-VN_DATA_CRC_ERROR: GBIC in port gi 1/0/1 has bad crc Mittels der undokumentierten Befehleservice unsupported-transcieverno errdisable detect cause gbic-invalid kann man sein Glück trotzdem versuchen.Das klappt nicht auf allen Plattformen und leider nicht mit …

Cisco Die richtige Zeit Einstellung – Uhr und Sommerzeit

Zeitangaben im Logfile sind wichtig, wer will schon anhand der uptime Zurückrechnen, wann es zum Fehler gekommen ist? Folgendes hilft: service timestamps debug datetime localtimeservice timestamps log datetime localtimeclock timezone MET 1clock summer-time MEST recurring last Sun Mar 2:00 last Sun Oct 3:00 Die Zeit stellt man dann mitclock set 15:230:25 14 Dec 2009

How to Do a Password Recovery on a Cisco ASA Firewall

Perhaps you’ve forgotten the password to your firewall? This post will answer the question: How do I restore the password on a Cisco ASA? Password Recovery To recover passwords, perform the following steps: Console into the ASA. Reboot the ASA Press the escape key during reboot to enter ROMMON. Tell the firewall to ignore the …

Change Boot Image

Problem You want to boot using an alternate IOS image. Solution To specify which IOS image the router should load next time it reboots, use the boot system command: Router1# configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router1(config)# boot system flash:c3620-jk9o3s-mz.122-7a.bin Router1(config)#boot system flash:c3620-jos56i-l.120-11.bin Router1(config)#boot system slot0:c3620-ik9s-mz.122-13.bin Router1(config)#boot system rom Router1(config)#endRouter1(config)#write memory

How to Enable SSH on Cisco Switch, Router and ASA

Q: I have a Cisco switch in my network, which I can access by hooking up a console cable directly to the device. I like to access the switch remotely using SSH. How can I enable ssh on my Cisco 3750 Catalyst Switch? A: By default, when you configure a Cisco device, you have to use the …

Cisco 3750E Switch config SSH/Telnet

Telnet und ssh einschalten