ccnp route 642-902

there is a small change in redistribution simulation

after configure redistribution btwn eigrp and ospf in R2 and R3 .Then configure Ad value to select the best to the network 172.16.100.0/24 from Router2 .Here the best path is R1>R2>R3>R4 but R2 forward the traffic to 192.168.3.1(direct to r4 ) b cos the other path hving highest ad of external eigrp (170) so we should decrease the ad value of externel eigrp using

following commd

router eigrp 100

distance eigrp 90(internel) 105(external)

Recover ios in a cisco router

Recover IOS using tftpdnld from ROMMON

In Cisco 2600/2800/3800 Series Router we can recover IOS using Trivial File Transfer Protocol (TFTP) over ethernet interface using the ROMmon tftpdnld command.
tfptdnld is more faster rather than recovering IOS via Xmodem.

rommon 1 > IP_ADDRESS=10.0.0.1 //The IP address for this unit

rommon 2 > IP_SUBNET_MASK=255.255.255.0 //The subnet mask for this unit

rommon 3 > DEFAULT_GATEWAY=10.0.0.13 //The default gateway for this unit
rommon 4 > TFTP_SERVER=10.0.0.13 //The IP address of the server to fetch from
rommon 5 > TFTP_FILE=c3845-adventerprisek9-mz.124-21.bin //The ios image file
rommon 6 > tftpdnld //this is the command

WARNING: all existing data in all partitions on flash will be lost!
Do you wish to continue? y/n: [n]: y

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