Tools for Network Administrators who want to explore ios cisco router or switch. This tool to explore various FTP or website that provides ios that we find. Total more than 1800 sources found by Hunter ios.
Ios from router to Cisco 800 Series Router with up to Cisco 7500 can we get with this tool. Switch series catalyst catalyst catalyst up to 8500!
Cisco ios other products that we can get a Cisco Access Server, Cisco concentrator, mica cisco modem, cisco analog modem, etc..
Unfortunately for the trial version all file can't be downloaded. But don't worry .. also many versions that can be downloaded.
Minimum Computer Specifications: Windows 95/98/Me/NT4/2000/XP
a. Installing Kiwi Syslog Daemon I use Kiwi Syslogd 8.2.18 for this setup. Please install Kiwi Syslog daemon untill you find this view. b. Install Syslog service and Start syslog service.
c. Configure Router/Switch
Switch#conf t Switch(config)#logging (Server IP Address) Switch(config)#logging trap informational Switch(config)#exit
For trap mode, you can choose trap mode. Here are 8 modes trap <0-7> Logging severity level
alerts Immediate action needed (severity=1) critical Critical conditions (severity=2) debugging Debugging messages (severity=7) emergencies System is unusable (severity=0) errors Error conditions (severity=3) informational Informational messages (severity=6) notifications Normal but significant conditions (severity=5) warnings Warning conditions (severity=4)
You can try if your syslog working or not by enter command clear counter Switch#clear counter Switch#
The Show Command List below are mostly used in my daily job.You can see it at Previledge mode.
show interfaces – Displays all the statistics for all the interfaces on the router. To view the statistics for a specific interface, enter the show interfaces command followed by the specific interface and port number.
show controllers serial – Displays information-specific to the interface hardware
show clock – Shows the time set in the router
show hosts – Displays a cached list of host names and addresses
show users – Displays all users who are connected to the router
show history – Displays a history of commands that have been entered
show flash – Displays information about flash memory and what IOS files are stored there
show version – Displays information about the router and the IOS that is running in RAM
show ARP – Displays the ARP table of the router
show protocol – Displays the global and interface specific status of any configured Layer 3 protocols
show startup-configuration – Displays the saved configuration located in NVRAM
show running-configuration – Displays the configuration currently running in RAM
This is the end of Configuring basic router.Please give comment and to my blog. I'm very apreciate it :)
To go previledge mode, you can use enable command, example
Router>enable enable command, goes to previledge mode Router#configure terminal goes to global configuration Enter configuration commands, one per line. End with CNTL/Z. Router(config)#? Configure commands: aaa Authentication, Authorization and Acc.. access-list Add an access list entry alias Create command alias appletalk Appletalk global configuration commands arap Appletalk Remote Access Protocol arp Set a static ARP entry
Exit command is used when you want to go to previous mode level, example :
Router(config)#exit 09:03:20: %SYS-5-CONFIG_I: Configured from console by con Router# After you have done something at your router, syslog will appears (only appears when you connect it wit console) Router(config)#interface interface Router(config-if)#exit Router#
End Command will bring you back to Previledge mode, wherever you are, example :
Router(config)# interface type port Router(config-if)# (commands) Router(config-if)# end (or Control-Z) Router#
In the telecommunication world, we can know link quality using RTT parameters.
Round Trip Times required for a network communication to travel from source the destination and back. RTT is used by something routing algorithms to aid in calculating optimal routes and measured in milliseconds or microseconds.
For example, we want to compare which provide that we have to choose before we make contract .
From the picture we assume one company want to choose provider A or provider B. Network Administrator configure HQ and branch with EIGRP. (No matter you use what kind of routing protocol)
HQ Configuration
interface Serial0/0/0 description .: Provider A : bandwidth 512 ip address 192.168.10.4 255.255.255.252 frame-relay lmi-type ansi frame-relay interface-dlci 102
interface Serial0/0/1 description .: Provider B : bandwidth 512 ip address 192.168.11.4 255.255.255.252 frame-relay lmi-type ansi frame-relay interface-dlci 103
Branch Configuration
interface Serial0/0/0 description .: Provider A : bandwidth 512 ip address 192.168.12.4 255.255.255.252 frame-relay lmi-type ansi frame-relay interface-dlci 102
interface Serial0/0/1 description .: Provider B :. bandwidth 512 ip address 192.168.13.4 255.255.255.252 frame-relay lmi-type ansi frame-relay interface-dlci 103
Now, we want to calculate Provider A RTT Step 1 :
Make sure there’s no traffic through both of interface by applying delay command at HQ and Branch Interface
Before you configure a Cisco router, you have to know what kind of Cisco Router Mode. There are 3 mode at Cisco Router.
1. User EXEC Mode , Router> In this mode, you can’t do many things even running configuration. Ping, traceroute are kinds of command that you can execute in this mode. 2. Previleged Mode , Router# View running configuration, save configuration can be executed in here. 3. Global configuration Mode, Router (config)# In this area you can configure router, interface configuration, routing, etc. 4. Specific Configuration Mode, example : Router (config-if)# Interface IP Address, shutting down, set VLAN number you can write in here.
If don’t have router at your place, you can use Cisco Simulator like GNS3, routersim, packet tracer.
Configuring Router Name
Router#config t Enter to global configuration Router(config)#hostname Jakarta make router name to Jakarta Jakarta(config)# Router name changed to Jakarta
Configuring Console Password
Router#config t Enter to global configuration Router(config)#line console 0 Enter to line console Router(config-line)#password test Give password to console with “test”
Virtual Terminal Password
Router#config t Enter to global configuration Router(config)#line vty 0 4 Enter to virtual line (telnet) from user 0 to user 4 (5 users) Router(config-line)#password test Give password to virtual line with “test”
Enable password
Router(config)#enable password erik Give enable password with “erik”
Password Encryption
Router(config)#service password-encryption Make your password encrypted
