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
Tuesday, December 30, 2008
Tuesday, September 16, 2008
Network World Chat on IPv6
These guys try to present a business case for running IPv6.
http://www.networkworld.com/cgi-bin/mailto/x.cgi?pagetosend=/export/home/httpd/htdocs/chat/archive/2008/091108-ipv6-strategies-chat.html&pagename=/chat/archive/2008/091108-ipv6-strategies-chat.html&pageurl=http://www.networkworld.com/chat/archive/2008/091108-ipv6-strategies-chat.html&site=lanwan
http://www.networkworld.com/cgi-bin/mailto/x.cgi?pagetosend=/export/home/httpd/htdocs/chat/archive/2008/091108-ipv6-strategies-chat.html&pagename=/chat/archive/2008/091108-ipv6-strategies-chat.html&pageurl=http://www.networkworld.com/chat/archive/2008/091108-ipv6-strategies-chat.html&site=lanwan
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
http://www.cisco.com/web/learning/le3/ccie/announcements/index.html#policypayment
Monday, August 18, 2008
Complete lack of Interest in IPv6
Less than 1/100th of 1% of the traffic on the internet is IPv6...
http://asert.arbornetworks.com/2008/08/the-end-is-near-but-is-ipv6/
http://asert.arbornetworks.com/2008/08/the-end-is-near-but-is-ipv6/
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
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
!
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
Friday, February 15, 2008
Ping A Group of IP Addresses with a Script on Cisco Routers and Switches
Here is a quick rundown of the scripts to ping multiple IPs on a Cisco Router or Switch.
IOS Router Using Tcl
Use the show ip aliases command to collect the IP addresses from all of the devices you would like to ping, and paste the results into notepad. Do a find and replace for Interface, and all of the blank space up to the IP address. Replace with nothing, leaving only the IP addresses.
Router#show ip aliases
Address Type IP Address Port
Interface 10.2.2.2
Interface 10.3.3.3
Interface 10.1.1.1
Interface 10.4.4.4
Then paste the IP addresses into the following script
tclsh
foreach ip {
10.2.2.2
10.3.3.3
10.1.1.1
10.4.4.4
} {ping $ip}
Router#tclsh
Router(tcl)#foreach ip {
10.1.1.1
10.2.2.2
10.3.3.3
10.4.4.4
} {ping $ip}
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
type tclquit to exit from Tcl Shell
IOS Switch Using a Macro
Use the show ip aliases command to collect the IP addresses from all of the devices you would like to ping, and paste the results into notepad. Do a find and replace for Interface, and all of the blank space up to the IP address. replace with "do ping "
Switch#show ip aliases
Address Type IP Address Port
Interface 10.2.2.2
Interface 10.3.3.3
Interface 10.1.1.1
Interface 10.4.4.4
Then paste the IP addresses into the following script
enable
conf t
macro name ping
do ping 10.2.2.2
do ping 10.3.3.3
do ping 10.1.1.1
do ping 10.4.4.4
@
Macro global apply ping
Switch#enable
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
Switch(config)#macro name ping
Enter macro commands one per line. End with the character '@'.
do ping 10.2.2.2
do ping 10.3.3.3
do ping 10.1.1.1
do ping 10.4.4.4
@
Switch(config)#
Switch(config)#Macro global apply ping
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
IOS Router Using Tcl
Use the show ip aliases command to collect the IP addresses from all of the devices you would like to ping, and paste the results into notepad. Do a find and replace for Interface, and all of the blank space up to the IP address. Replace with nothing, leaving only the IP addresses.
Router#show ip aliases
Address Type IP Address Port
Interface 10.2.2.2
Interface 10.3.3.3
Interface 10.1.1.1
Interface 10.4.4.4
Then paste the IP addresses into the following script
tclsh
foreach ip {
10.2.2.2
10.3.3.3
10.1.1.1
10.4.4.4
} {ping $ip}
Router#tclsh
Router(tcl)#foreach ip {
10.1.1.1
10.2.2.2
10.3.3.3
10.4.4.4
} {ping $ip}
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
type tclquit to exit from Tcl Shell
IOS Switch Using a Macro
Use the show ip aliases command to collect the IP addresses from all of the devices you would like to ping, and paste the results into notepad. Do a find and replace for Interface, and all of the blank space up to the IP address. replace with "do ping "
Switch#show ip aliases
Address Type IP Address Port
Interface 10.2.2.2
Interface 10.3.3.3
Interface 10.1.1.1
Interface 10.4.4.4
Then paste the IP addresses into the following script
enable
conf t
macro name ping
do ping 10.2.2.2
do ping 10.3.3.3
do ping 10.1.1.1
do ping 10.4.4.4
@
Macro global apply ping
Switch#enable
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#
Switch(config)#macro name ping
Enter macro commands one per line. End with the character '@'.
do ping 10.2.2.2
do ping 10.3.3.3
do ping 10.1.1.1
do ping 10.4.4.4
@
Switch(config)#
Switch(config)#Macro global apply ping
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
Thursday, February 14, 2008
Cracking level 7 Encrypted Cisco Passwords
This is a cool way to see the passwords generated by service password-encryption, check out this link!
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