The other nite I changed my IP address scheme at home. For a Gentoo box:
I also had to changed
SSH, mySQL config file, apache listening IP and it’s virtual hosts, and the permitted hosts for Samba.
hero etc # vim /etc/conf.d/net
config_eth0=(
“10.10.1.2/28″
“10.10.1.9/28″
“10.10.1.8/28″
routes_eth0=(
“default via 10.10.1.1″
)
hero etc # ifconfig
eth0 Link encap:Ethernet HWaddr 00:11:11
inet addr:10.10.1.2 Bcast:10.255.255.255 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:50625745 errors:0 dropped:0 overruns:0 frame:0
TX packets:78935112 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:888751433 (847.5 Mb) TX bytes:2592627611 (2472.5 Mb)
Interrupt:16
eth0:1 Link encap:Ethernet HWaddr 00:11:11
inet addr:10.10.1.9 Bcast:10.255.255.255 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3103 errors:0 dropped:0 overruns:0 frame:0
TX packets:3103 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:227515 (222.1 Kb) TX bytes:227515 (222.1 Kb)
Interrupt:16
eth0:2 Link encap:Ethernet HWaddr 00:11:11
inet addr:10.10.1.8 Bcast:10.255.255.255 Mask:255.255.255.240
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3103 errors:0 dropped:0 overruns:0 frame:0
TX packets:3103 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:227515 (222.1 Kb) TX bytes:227515 (222.1 Kb)
Interrupt:16
To convert all chars to lower case in the lines 1 to 155
:1,155!tr [A-Z] [a-z]
If your router takes a long time to boot up and it is looking for config files from a tftp server type no service config.
(tftp://255.255.255.255/cisconet.cfg) failed
00:37:25: %SYS-4-CONFIG_RESOLVE_FAILURE: System config parse from
(tftp://255.255.255.255/
http://www.velocityreviews.com/forums/t296140-router-looking-for-cfg-files.html
5 min avg: .1.3.6.1.4.1.9.9.109.1.1.1.1.8.1
1 min avg: .1.3.6.1.4.1.9.9.109.1.1.1.1.7.1
5 sec avg: .1.3.6.1.4.1.9.9.109.1.1.1.1.6.1
Adding a SNMP by MIB in Sitescope is a little tricky. But select .1.3.6.1.4.1, then select all, Sitescope will then list all alerts to be monitored. Do a search (Ctrl+F) for the exact string: 109.1.1.1.1.7.1, and Sitescope will show the name of the SNMP string. i.e.
iso/org/dod/internet/private/enterprises/cisco/ciscoMgmt/109/1/1/1/1/7/ciscoMgmt.109.1.1.1.1.7.1
http://www.cisco.com/warp/public/477/SNMP/collect_cpu_util_snmp.html
Wikipedia has a image of RAID 5 and parity.
http://en.wikipedia.org/wiki/Image:RAID_5.svg
The minimum amount of drives need is 3. In this example, if Disk 3 is lost, the RAID set can use A1, A2, A3 to create A’s parity. Likewise, B1, B2 and Bp will be used to create B3. If you lose two drives at once, then you are out of luck.
I don’t know how they can extract the parity’s data to “recreate” the data…
I guess it is like SAN/NAS and snapshot technology, which I never fully understood either.
We wanted Austin, SA, Dallas numbers to be forwarded to our general office cheaply and easily. I did some research and the term is “virtual phone numbers.” All the VoIP providers have that feature, but all require a phone to be placed in our office. In the end we went with Skype. Other providers I looked at:
www.grandcentral.com (for personal use only)
www.phonenumberbank.com (needed a number already)
www.ureach.com (only 1800 numbers)
www.callcentric.com
I recently finished Network Warrior and it was a really good networking book. It had a lot of cool tips that other technical books don’t offer. Anyhow here are my notes to help me remember stuff.
http://www.movement3.com/docs/network_warrior.pdf
Same doc as the PDF, but you can open this file in Textedit.
http://www.movement3.com/docs/network_warrior
