Set the IP address of the Alpha Router

The so-called vro IP address, as the name implies, is the identifier of the vro body, just like the house number, to let the Data know from where to where, if the vro IP address is set incorrectly, then there will be problems with the network. How can we correctly set the router IP address? Here we will mainly introduce how to set the IP address of the Alpha router, and hope it will help you.
1. When the router receives a packet that does not know the IP address of the router, it will try to send an ARP broadcast for resolution. If a target host responds to this ARP broadcast, the router forwards the data packet to the target host. Www.2cto.com 1. If the router does not receive a response, it will send an ARP request for the next four packets. If 6th packets arrive, the MAC address of the target host has not been parsed. By default, the vro will discard 6th and subsequent data packets in the next 20 seconds, in addition, the system returns inaccessible host information to the source host.
2. the router sends an ARP query to the CIDR block. If the IP address of the router is 222.184.24.136, no computer is found, and the router considers that there is no target host in the CIDR block, therefore, an ICMP message is returned to the source computer indicating that the target host cannot be reached to notify the source host that there is a problem and the source data packet is discarded. 3. In order to reduce the log volume of the vroicmp, we use ip disable icmp-messages destination-unreachables in configuration mode to disable forwarding of such information. Both faults are caused by ICMP, in addition, in a sense, it is not a problem in system configuration, but caused by external factors.
Ii. troubleshooting: first, use the dedicated CONSOLE cable of the router to connect the COM port of the computer to the CONSOLE port of the router, and enable the Super Terminal to establish a connection with the router on the computer, after the power of the router is connected, you can see the following loading information on the Super Terminal: www.2cto.com Processor: R5000 rev 2.1 [0x2321], 198 MHz, (bus: 66 MHz ), 64 mb dram Cache 32 KB, linesize 32. d-Cache 32 KB, linesize 32 L2-Cache 512 KB, linesize 32, cache enable Mounting 8 MB Linear external flash card... Done initializing system ....... Failure Autoboot in 2 seconds-press ESC to abort and enter prom.
1. The system initialization fails. After you see Autoboot in 2 seconds-press ESC to abort and enter prom, press the ESC key to enter the startup mode. By default, the IOS system image file in the flash card is booted when the vro。 starts. If the IOS file is lost, the system initialization fails. To successfully boot the system, you must download the system image file again. 2. You can use the following steps to restore the lost IOS: set the IP address of the computer router and the IP address of the router Ethernet Management port to the same subnet, assume that the IP address of the router is 192.168.1.102 and the mask is 255.255.255.0. Then, the NIC of the computer is connected to the en0 of SSR using a crossover line.