Setting up redundancy on a Catalyst switch with dual supervisor modules is pretty simple. You must have the same version of IOS to have the supervisors in Hot standby mode. With the modules in place, perform the following at the global config prompt: redundancy keepalive-enable mode sso main-cpu auto-sync running-config This will auto sync the… [Read more…]
September 7, 2011
Cisco just released a vulnerability on the Nexus 5000 and 3000 running 5.0(2) and 5.0(3) code, prior to version 5.0(3)N2(1). Version 4.0 code is not affected. The vulnerability occurs when you have a remark configured on an ACL prior to a deny in the ACL such as in the example below: ip access-list acl-ipv4-01 remark this ACL… [Read more…]
September 7, 2011
In Checkpoint firewalls, when having an issue with logging not working for your firewalls, check that the CLM and the CMA databases are in sync. The main indicator that the CMA and CLM are out of sync is that there are objects in the CMA that are not in the CLM To fix this, go… [Read more…]
September 2, 2011
The procedure to upgrade the code on a Nexus 5000 is pretty easy. Go to the downloads section on Cisco.com and get the new version of the System software and Kickstart image. A CCO login is required. Put these files on an ftp, secure shell/sftp/scp, or tftp server. Check the space in bootflash on your… [Read more…]
August 31, 2011
I don’t usually go into my trade on this blog, but since I have been working so much on Nexus switches over the last year I thought I would share some of the knowledge I have. There are several advantages to the new Nexus platform including the fact it was built to be more modular… [Read more…]
September 12, 2011
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