Key 0 will show up if you have specified MD5 authentication, but not actually configured a valid MD5 password. This can lead you to think you are authenticating, but likely getting 0 points.
On Tue, Aug 16, 2011 at 11:36 AM, Atle Ørn Hardarson <[email protected]> wrote: > Hi guys > > Regarding Lab 3 in Workbook II: > > Task 3.2 states: "Configure MD5 authentication for the link between R7 and > R8 with password cisco". > > The Solution Guide provides the correct solution, but has an additional > comment which I do not understand - > > "Verify with show ip ospf interface. Look carefully at the last few lines. > Key ID is 0, which is a null key". > > -------------------------------------------------------------------- > R8# show ip ospf int > Serial0/0/0 is up, line protocol is up > Internet address 110.99.78.8/24, Area 100 > Process ID 1, Router ID 110.99.8.8, Network Type POINT_TO_POINT, Cost: 64 > Enabled by interface config, including secondary ip addresses > Transmit Delay is 1 sec, State POINT_TO_POINT, > Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5 > oob-resync timeout 40 > Hello due in 00:00:02 > Supports link-local signalling (LLS) > Index 1/1, flood queue length 0 > Next 0x0(0) / 0x0(0) > Last flood scan length is 1, maximum is 1 > Last flood scan time is 0 msec, maximum is 0 msec > Neighbor Count is 1, Adjacent neighbor count is 1 > Adjacent with neighbor 110.99.7.7 > Suppress hello for 0 neighbor(s) > Message digest authentication enabled > Youngest key id is 1 > R8# > R8# > -------------------------------------------------------------------- > > The Key ID in the output is 1, in fact, it is not possible to configure a > key ID of 0 with MD5 authentication: > > R7(config-if)#ip ospf message-digest-key ? > <1-255> Key ID > > So what is the solution guide referring to here? Is it a typo, or is my puny > brain missing something? What is a "null key" in this scenario? > > One more thing - the "Initial Config" of R9 is really the "Final Config". It > has the MLPPP with multicast routing and everything. Can you please correct > this, and update the downloadable fileset to include the correct Initial > Config for R9. Thanks... > > Atle Hardarson > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com > _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
