Nikolay Abromov blog

important point if you have to do UDP-JITTER SLA: Time synchronization, such as that provided by NTP, is required between the source and the target device in order to provide accurate one-way delay (latency) measurements. To configure NTP on the source and target devices, perform the tasks in the "Performing Basic System Management" chapter of the Cisco IOS Network Manageent Configuration Guide. Time synchronization is not required for the one-way jitter and packet loss measurements, however. If the time is not synchronized between the source and target devices, one-way jitter and packet loss data will be returned, but values of "0" will be returned for the one-way delay measurements provided by the UDP jitter operation. You must configure NTP between the routers you are measuring the jitter (under question, confirming that with the INE guys right now) R5#show ntp as R5#show ntp associations address ref clock st when poll reach delay offset ...

how to push one of the routers in the broadcast ospf segment to be elected as a ABR; it's simple, based on rfc 1587 the only thing you should do is to make more preferable RID (higher RID)

I am quite sure I am able to explain what I think about the social networking and things like facebook but have you think about what would be if networks like linkedin extend their capabilities so you can actually chat with your business network or people interested in the same things as you. So, why facebook ? :) What facebook can offer you if you are looking for pro connections and people with common interests. - my 1 cent thought

Looks like the recommendation from the most of people I asked is to skip the very first labs and jump on 26-35 (the version 4),however, still the very first labs are great in terms of building strong knowledge on things like redistribution,route filtering and troubleshooting. I am about to finish lab 7 and jump to lab 26.

NMC lab5; task 14.4;ipv6 l2 multicast

Wrong vlan mappings for sw2 to R1;

Router R3 is connected on it's ethernet interface to SW3 (working only as a l2 switch) and we have to send him default gateway via IRDP. This how such configuration would looks like: R3 R3#sh run int fast 0/0.50 Building configuration... Current configuration : 262 bytes ! interface FastEthernet0/0.50 encapsulation dot1Q 50 ip address 172.16.30.3 255.255.255.128 ip irdp ip irdp multicast ip irdp maxadvertinterval 20 ip irdp minadvertinterval 20 ip irdp holdtime 60 ip irdp preference 100 ip irdp address 0.0.0.0 100 end R3# and SW3#sh run int vlan 50 Building configuration... Current configuration : 93 bytes ! interface Vlan50 ip address 172.16.30.10 255.255.255.128 ip irdp ip irdp multicast end SW3# however, to make it work you'd need to enable it by entering ip gdp irdp SW3#show ip route Gateway Using Interval Priority Interface 172.16.30.3 IRDP 20 100 Vlan50 Default gateway is 172.16.30.3 Host Gateway Last Use...