Step 6- Verify that the Channel is trunking by using the show trunk command. Also verify that the spanning tree protocols view
3. TYPE FAST!
Keep on tapping the down arrow key (or any key that will not perform a function) to prevent a timeout while at the same time you change the console or the telnet timeout.
Example:
>Router_C con0 is now available
>Press RETURN to get started.
>Router_C>en Password:
Router_C#config t
Enter configuration commands, one per line.
End with CNTL/Z.
Router_C(config)#line 0
Router_C(config-line)#exec-timeout 0 0 Router_C(config-line)#
During the time I was keying in the above commands I was tapping the down arrow key.
Solution 4.
Create an additional vty connection and connect through this port.
The steps are as follows:
1. Turn the router off; turn the router on; and within 60 seconds, issue the break sequence of your terminal emulation package. If you are using hyperterminal, that would be <ctrl><pause>.
2. You will now be in ROM monitor mode indicated by the > prompt. Our goal here is to turn bit 6 on, so if the configuration register is set to 0x2102, we want to change the register to 0x2142. To determine the current configuration register setting, use the following command:
>e/s 2000002
To change the register:
>o/r 0x2142
To re-initialize the router
>I
3. After the router prompt appears log into the privileged mode.
4. Create vty 5.
5. Telnet to the router on connection 5.
6. Copy start to run.
7. Change the exec time-out.
8. Save your configuration.
Create vty 5
Router_C(config)#line vty 5 Router_C(config-line)#no login Telnet to vty 5
Attempt 1
>Router_A>telnet 172.16.1.2 Trying 172.16.1.2 ... Open User Access Verification Password:
< key <cntrl>-<shift>-<6> then
<x> to suspend the session Attempt 2
Router_A>telnet 172.16.1.2
(Create another session without logging into previous session.) Trying 172.16.1.2 ... Open
User Access Verification Password:
< key <cntrl>-<shift>-<6> then <x>
Attempt 3
Router_A telnet 172.16.1.2 Trying 172.16.1.2 ... Open User Access Verification Password:
< key <cntrl>-<shift>-<6> then <x>
Attempt 4
Router_A>telnet 172.16.1.2 Trying 172.16.1.2 ... Open User Access Verification Password:
< key <cntrl>-<shift>-<6> then <x>
Attempt 5
Router_A>telnet 172.16.1.2 Trying 172.16.1.2 ... Open User Access Verification Password:
< key <cntrl>-<shift>-<6> then <x>
Attempt 6 will be successful because this session will connect to vty 5 Router_A>telnet 172.16.1.2
Trying 172.16.1.2 ... Open Router_C# copy run start
Copyright © 1998-2000 CCPrep.com. All rights reserved. Do not duplicate or redistribute in any form. Home | Logon | Support | Advertise
Welcome, Sebastion! To access subscriber questions, select blue button on left. To update profile, please go to My Account.
Lab FastTrack 01|02|03|04 05|06|07|08 09|10|11|12 13|14|15|16 17|18|19|20 21|22|23|24 25|26|27|28 29|30|31|32 33|34|35|36 37|38|39|40 41|42|43|44 45|46|47|48 49|50|51|52 53|54|55|56 57|58|59|60 61|62|63|64 65|66|67|68 69|70|71
Lab FastTrack
For information on question codes, please refer to the Code Key.
Lab 16
-Trouble-Shooting Scenario
Upon returning from lunch you notice the following:
RouterA#sh ip ospf virtual-link
Virtual Link OSPF_VL2 to router 172.16.1.5 ...
is down
Run as demand circuit DoNotAge LSA allowed.
Transit area 1, Cost of using 65535 Transmit Delay is 1 sec, State DOWN,
Timer intervals configured, Hello 10, Dead ...
40, Wait 40, Retransmit
Using the following information, determine the problem and correct the situation:
Router_B#sh run
Building configuration...
Current configuration:
!
version 11.3
no service password-encryption
!
hostname Router_B
!
enable secret 5 ...
$1$ZC3M$GKUNYesHzPXAPslxN013S/
!
ipx routing 0007.7816.fe54
!
interface Tunnel0 no ip address ipx network DAD
tunnel source Serial0
tunnel destination 10.10.10.10
!
interface Serial0
ip address 172.16.1.5 255.255.255.252 clockrate 56000
!
interface Serial1
ip address 172.16.1.9 255.255.255.252
!
ip address 192.168.1.17 255.255.255.240 ring-speed 16
!
interface BRI0 no ip address shutdown
!
router ospf 100
network 192.168.1.0 0.0.0.255 area 0 network 172.16.1.5 0.0.0.0 area 1 area 1 virtual-link 172.16.1.6
!
ip classless
ip route 10.10.10.0 255.255.255.0 Null0 access-list 800 permit DAD
!
%SYS-5-CONFIG_I: Configured from console by ...
console
Current configuration:
!
version 11.3
no service password-encryption
!
hostname RouterA
!
enable secret 5 ...
$1$jc6O$TJi97lu4oUgulXMTiysAs1 enable password ccnp
!
interface Ethernet0
ip address 10.0.1.17 255.255.255.240 no cdp enable
no mop enabled
!
interface Serial0
ip address 172.16.1.6 255.255.255.252 no ip mroute-cache
no fair-queue no fair-queue interface Serial1
ip address 172.16.1.13 255.255.255.252 no cdp enable
!
router ospf 100
network 10.0.1.17 0.0.0.0 area 1 network 172.16.1.13 0.0.0.0 area 2 network 172.16.1.6 0.0.0.0 area 1 area 1 virtual-link 172.16.1.5
!
ip classless
!
line con 0 exec-timeout 0 0 line 1 8
line aux 0 line vty 0 4 password ccda login
! end
Router_A# show ip ospf neighbor
Neighbor ID Pri State Dead ...
Time Address Interface 192.168.1.17 1 FULL/ - ...
00:00:32 172.16.1.5 Serial0
00:00:37 172.16.1.14 Serial1
Solution:
When a virtual link is created it must point to the remote router ID;
NOT the interface to which it is connected.
The router ID of Router_B is 192.168.1.17; as determined by using the "show ip ospf neighbor" command.
The correct configuration of Router_A should be:
router ospf 100
network 10.0.1.17 0.0.0.0 area 1 network 172.16.1.13 0.0.0.0 area 2 network 172.16.1.6 0.0.0.0 area 1 area 1 virtual-link 192.16.1.17 RouterA#sh ip ospf virtual-link
Virtual Link OSPF_VL3 to router 192.168.1.17 ...
is up
Run as demand circuit DoNotAge LSA allowed.
Transit area 1, via interface Serial0, ...
Cost of using 64
Transmit Delay is 1 sec, State ...
POINT_TO_POINT,
Timer intervals configured, Hello 10, Dead ...
40, Wait 40, Retransmit 5 Hello due in 00:00:04
Adjacency State LOADING (Hello ...
suppressed)
Copyright © 1998-2000 CCPrep.com. All rights reserved. Do not duplicate or redistribute in any form. Home | Logon | Support | Advertise
Welcome, Sebastion! To access subscriber questions, select blue button on left. To update profile, please go to My Account.
Lab FastTrack
For information on question codes, please refer to the Code Key.
Lab 17
-Trouble-Shooting Scenario
Problem: You come back from lunch to find out that you can longer log in to your Catalyst 5000 switch.
Cisco Systems Console Welcome to BOBCAT1 Enter password:
Sorry. Try again.
Enter password:
Sorry. Try again.
Enter password:
Sorry. Try again.
Solution:
Password recovery on a Catalyst switch is vastly different than with the Cisco Router. For 60 seconds after the initial power on, the
Catalyst switch will have no password regardless of the configuration.