Free downloadable cable modem mac change mac programs like Router IP Address, IPNet Router, Ruby Text-Based Router Search. IPNetRouter is the simple low cost way to share your cable modem, ADSL, or dial-up internet connection with your entire LAN.
Introduction This document addresses frequently asked questions (FAQ) associated with Cisco cable modem configurations. What does the default bridging configuration look like in a Cisco cable modem? When the uBR9xx is pulled out of the box and powered up, it performs as a bridge. Remember that the default gateway for hosts behind the bridge must be the cable secondary IP address of the Cable Modem Termination System (CMTS). In this example, a uBR924 running Cisco IOS® Software Release 12.1(1)T is used. This is what the default configuration looks like as a bridge once the uBR924 comes online: Router# show run Building configuration. Current configuration:!!
No configuration change since last restart! Version 12.1 no service pad service timestamps debug uptime service timestamps log uptime no service password-encryption! Hostname Router!!
Clock timezone - -8 ip subnet-zero no ip routing!! Voice-port 0 input gain -2!
Voice-port 1 input gain -2!! Interface Ethernet0 ip address 10.2.3.6 255.255.255.0 no ip route-cache bridge-group 59 bridge-group 59 spanning-disabled! Interface cable-modem0 ip address negotiated no ip route-cache cable-modem downstream saved channel 525000000 7 1 cable-modem Mac-timer t2 40000 bridge-group 59 bridge-group 59 spanning-disabled! Ip default-gateway 10.2.3.1 ip classless no ip http server! Snmp-server engineID local B644 snmp-server packetsize 2048 snmp-server manager! Line con 0 transport input none line vty 0 4!
End Router# For more detailed information about routing and bridging configurations, refer to. How do I configure a Cisco cable modem for routing? The uBR9xx has a four port Ethernet hub on the back of the unit (the 4 in uBR90 4). The cable modems are bridge devices out of the box. Complete these steps to configure the uBR9xx as a router:. Remove the default commands bridge-group 59 and bridge-group 59 spanning-disabled from the Ethernet 0 (e0) and cable-modem 0 interfaces of the cable modem.
Issue the command no cable-modem compliant-bridge on the uBR9xx under the cable 0 interface. Router# configure terminal Enter configuration commands, one per line. End with CNTL/Z.
Router(config)# interface e0 Router(config-if)# no bridge-group 59 Router(config-if)# no bridge-group 59 spanning-disabled Router(config-if)# interface cable 0 Router(config-if)# no bridge-group 59 spanning-disabled Router(config-if)# no bridge-group 59 Router(config-if)# no cable-modem compliant bridge Router(config-if)# exit Router(config)# ip routing Router(config)# ^Z Router# Note: The default gateway for PCs behind the uBR9xx or Cable Voice Adapter 120 (CVA120) bridge must be set to the cable secondary IP address on the CMTS. When the cable modem is configured as a router, the default gateway of the host corresponds to the e0 interface of the cable modem. This is what the configuration of a uBR904 as a router looks like: no service pad service timestamps debug uptime service timestamps log uptime no service password-encryption! Hostname Router! Clock timezone - 0 ip subnet-zero! Interface Ethernet0 ip address 100.1.1.1 255.255.255.0 no ip directed-broadcast ip rip send version 2 ip rip receive version 2!
![Mac Change Emulator Cable Modem Mac Change Emulator Cable Modem](/uploads/1/2/5/5/125538317/489750578.png)
Interface cable-modem0 ip address negotiated no ip directed-broadcast ip rip send version 2 ip rip receive version 2 cable-modem downstream saved channel 453000000 28 1 cable-modem Mac-timer t2 40000 no cable-modem compliant bridge! Router rip version 2 network 10.0.0.0 network 100.0.0.0! Ip classless ip route 0.0.0.0 0.0.0.0 10.1.1.10 no ip http server!! Line con 0 transport input none line vty 0 4! End You also need to understand the limitations of the uBR9xx in bridging mode.
For more detailed information about routing and bridging configurations, refer to. How do I configure the cable modem as a router doing Network Address Translation (NAT)? How do I configure cable gateways to do VoIP statically without a gatekeeper? How do I configure H.323 RAS VoIP in the Cable environment? How do I configure IPSec on a cable modem? How do I configure GRE on a Cable Modem? What are the meanings of the commands cable-modem boot admin 2 and cable-modem boot oper 5, which appear under the cable interface in some cable modems?
The Cisco IOS commands cable-modem boot admin 2 and cable-modem boot oper 5 were added under the cable interface for cable modems to support a DOCSIS Engineering Change Notice regarding recovering from failed software upgrades. Those commands should not be changed or removed under any circumstances. As of Cisco IOS Software Release 12.1(3)T, these commands have been hidden from the configuration, which explains why some cable modems show these commands, and some do not.
What cable modems are DOCSIS 1.1 compliant?
Mac's and serial TTY's Mac's are excellent tools for accessing serial device TTY ports (to console into PBX's, switches, and routers). You just need a serial to USB adapter, the right driver, and some Terminal. You can use, although (or a ) offer more features and functionality. Drivers: Most Serial-to-USB adapters will work on a Mac with one of the following OS X drivers. UPDATE: Mavericks (10.9) includes a driver for FTDI-based Serial-to-USB adapters. Prolific PL2303: FTDI USB Serial: NOTE: It may be necessary to remove any previous driver before installing a newer one, eg: $ sudo rm -rf /System/Library/Extensions/ProlificUsbSerial.kext If your adapter doesn't work with either of these, try the following sources:.
CP210x USB to UART Bridge Virtual COM Port (VCP) drivers. USB Serial Adapters: F5U257, F5U103, F5U003 (poor OS X support). serial-USB adapter drivers can be found in their Support Section. After installing the correct driver, plug in your USB-Serial adapter, and open a Terminal session (Applications/Utilities).
Enter the command ls /dev/cu., and look for something like usbserial (or similar): $ ls /dev/cu. /dev/cu.Bluetooth-Modem /dev/cu.iPhone-WirelessiAP /dev/cu.Bluetooth-PDA-Sync /dev/cu.usbserial This indicates the USB-Serial driver is working. Select this port name in a terminal program. Note: Check your adapter works after an OS Update, as you may have to re-install the driver. You might notice that each serial device shows up twice in /dev, once as a tty.
and once as a cu. So, what's the difference? Well, TTY devices are for calling into UNIX systems, whereas CU (Call-Up) devices are for calling out from them (eg, modems).
We want to call-out from our Mac, so /dev/cu. is the correct device to use. The technical difference is that /dev/tty. devices will wait (or listen) for DCD (data-carrier-detect), eg, someone calling in, before responding. /dev/cu.
devices do not assert DCD, so they will always connect (respond or succeed) immediately. Software: Having installed the right driver, our USB-Serial adapter will show up in /dev/cu.
(shown above). We now need to install some terminal emulation software before we can connect to anything. Two terminal methods are and. For a GUI solution, see Note: If you can't find a driver for your adapter (eg, Belkin), try which has built-in support for many USB-Serial devices. Screen It's not actually necessary to download an install extra software, as you can use the Mac OS X built in Terminal and screen. Screen lacks some features, but it does include VT100/ANSI terminal emulation, and can be extremely useful. Open an OS X terminal session (window).
Find the right TTY device. Type: ls /dev/cu. With the USB-Serial adapter plugged in, you'll get a list, including something like this: $ ls /dev/cu. /dev/cu.Bluetooth-Modem /dev/cu.iPhone-WirelessiAP /dev/cu.Bluetooth-PDA-Sync /dev/cu.usbserial. Then type: screen /dev/cu.usbserial 9600 (in this example).
The 9600 at the end is the baud rate. You can use any standard rate, eg, 9600, or 19200 for a Sig Server!.
To quit the screen app, type CTRL-A, then CTRL-. Type man screen in Terminal for further information on screen.
(use 'enter' or 'space' to scroll, and 'q' to quit). Minicom Alternatively, if you'd like a few more features, and a retro feel, you can install. Minicom supports VT100 emulation, which means it sorta kinda works with Meridian Mail (Function keys: fn + f-key). Download and run the package installer. Then manually edit your $PATH with sudo nano /private/etc/paths. Add the following line to the bottom of the file: /opt/minicom/2.2/bin, save and exit - then relaunch the terminal. Run minicom -s first to configure your serial interface device name, and other options.
Then, Save setup as dfl (default) and Exit. Your serial interface device name is found with ls /dev/cu. (as shown above). Always launch minicom, with your selected serial adapter plugged in and available to avoid an error. In the example below, the serial device is /dev/cu.usbserial. Command Summary In minicom, commands can be called by CTRL-A, for example, change your serial port settings with CTRL-A P Press CTRL-A Z for a Command Summary, and help on special keys.
Enter CTRL-A X to quit. HINT: Change your OS X terminal window size to 80x25 (1 line more) so you can see the bottom Minicom status bar. (Terminal Preferences ► Settings ► Window). Open a new window for this change to take effect. Note, the minicom installer creates /opt, and its not hidden in the OS X finder. Rectify this with: sudo chflags hidden /opt Connecting With handshaking set to software ( xon/xoff) or none, which covers most devices, serial data communication needs just 3 wires: RXD (2), TXD (3), and GND (5). Generally, hitting should cause a response, or should 're-draw' the screen.
If you don't get any characters, try adding a Null-Modem cable or adapter, which swaps RXD and TXD (pins 2 and 3). Signal ground is Pin 5 in a DB-9, or Pin 7 in a DB-25.
Pin Functions for RS-232 Data TXD (3) Serial Data Output RXD (2) Serial Data Input GND (5) Signal Ground Other RI (9) Ring Indicator Handshake RTS (7) Request to Send CTS (8) Clear to Send DSR (6) Data Set Ready DCD (1) Data Carrier Detect DTR (4) Data Terminal Ready DB-9 Male Front (pin) view.