Tuesday, December 30, 2008

4 Byte Autonomous System Numbers

Starting Jan 1 2009 Arin will allocate 4 Byte ASNs by default, 2 Byte ASNs by request only.

http://www.arin.net/policy/nrpm.html#five1

Cisco support documented here.

http://www.cisco.com/en/US/docs/ios/iproute/configuration/guide/irp_bgp_overview.html#wp1055927

Wednesday, September 3, 2008

Policy Change to Payment for CCIE Labs

As of September 6th Cisco will require payment for CCIE lab dates 90 days in advance. Click the link for the official post.

http://www.cisco.com/web/learning/le3/ccie/announcements/index.html#policypayment

Monday, August 18, 2008

Tuesday, April 22, 2008

FBI Fears Chinese Hackers and/or Government Agents Have Back Door Into US Government & Military Computer Networks

FBI investigating sources of counterfeit Cisco equipment, read the slide show here, to see some of the sources.

Sunday, April 13, 2008

Cisco Router As A Linux Server?

Cisco is enabling the ISR routers to run custom or third party applications on the AIM module, or a Network module. Check out the link for more...

http://www.cisco.com/en/US/products/ps9701/index.html

Sunday, February 17, 2008

Synchronizing the Software Clock to the Hardware Clock on a Cisco Router

The router is a 2811 Cisco ISR, it has the following configuration regarding its clock settings:

!
clock timezone eastern -5
clock summer-time eastern recurring
!

Here is the current time on the router:

Certchaser#show clock
*10:10:41.235 eastern Sun Feb 17 2008

The actual time is 10:04

Setting the clock on the router can correct the time setting, currently this router is fast by about six minutes

Certchaser#show clock
*10:14:35.055 eastern Sun Feb 17 2008

Certchaser#clock set 10:09:00 february 17 2008

*Feb 17 15:09:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 10:15:23 eastern Sun Feb 17 2008 to 10:09:00 eastern Sun Feb 17 2008, configured from console by console.

Certchaser#show clock
10:09:08.659 eastern Sun Feb 17 2008

After a reload the router returns to its incorrect time settings, this was verified by writing the config and reloading the router, then comparing to the current time on a PC. This router has a hardware clock, changing the software clock on the router does not update the hardware clock. The command to update the hardware clock is clock update-calendar The hardware clock can be displayed with the command show calendar

Certchaser#show clock
10:27:10.159 eastern Sun Feb 17 2008

Certchaser#show calendar
10:27:14 eastern Sun Feb 17 2008

Certchaser#clock set 10:21:00 february 17 2008

Feb 17 15:21:00.000: %SYS-6-CLOCKUPDATE: System clock has been updated from 10:27:36 eastern Sun Feb 17 2008 to 10:21:00 eastern Sun Feb 17 2008, configured from console by console.

Certchaser#clock update-calendar

Certchaser#show clock
10:21:19.083 eastern Sun Feb 17 2008

Certchaser#show calendar
10:21:27 eastern Sun Feb 17 2008