IPExpert V2 Lab2

6.0 redistribution

In case of mutual redistribution between 3 process (R5 & R6), keep in mind to tag redistributed route in the transit area (ospf) with the originating tag.

cycle redistribution RIP -> OSPF -> EIGRP -> RIP

Ex : redistribute rip in ospf with tag 25, redistribute ospf with tag 58 and ospf coming from RIP with tag 25 into eigrp. When redistributing to orignating RIP, filter tag 25, redistribute 58 with tag 58 and EIGRP with tag 20.

7.6 BGP MED

In order to make the R5 route prefered MED must be compared, as R5 set a MED and R6 not, R6 is preferedd.

bgp bestpath med missing-as-worst permits to set a MED TO THE LARGEST VALUE WHEN HE IS NO SET
Easier to do

8.2 NTP Authentication

Authentication permit to authentication the clock source not the recipient and on the demand of the recipient.

Case 1 : Server Y, Client N : sync but no authenticated
Case 2 : Server N, Client Y : no sync
Case 3 : Server Y, Client Y :

Server Side
ntp authentication-key 1 md5 060F1F24545E0C0B11 7
ntp authenticate
ntp master

Client side
ntp authentication-key 1 md5 060F1F24545E0C0B11 7
ntp authenticate
ntp server 10.10.10.4 key 1
ntp trusted-key 1


10.2 Qos

In order to drop traffic and use NBAR, use policy-amp with action drop

policy-map DROP
class P2P
drop