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Ruwan Indika
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IPsec capture with decryption information
This is a capture I did from a StrongSwan net-to-net IPsec VPN I setup for testing. Packet capture :  https://drive.google.com/open?id=0B3ctVg8ubiwUd0lsbW9yeG82OHc Phase 1 main mode - IKEv1  Initiator cookie :  751b83775c20d140 Encryption key :  d38c64bef9f...

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OSPF adjacency not forming ?
Router ID 3.3.3.3 (172.16.1.1) and router ID 4.4.4.4 (172.16.1.2) is not forming adjacency. I was thinking how to troubleshoot this. Then I did a packet capture and saw that both routers are sending OSPF hello pkts So why are they not forming adjacency ??? ...

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Microwave oven interference
A customer I visited was complaining about connectivity issues in a staff common area. I was sitting there looking at the spectrum analyser and someone came in and started the microwaving. This is what I saw in the spectrum analyser.

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Packet capture samples
Some times I want to quickly look at a sample packet capture of some protocol but its not readily available somewhere in internet to download. So I thought of making a list. BGP packet capture -  https://drive.google.com/open?id=0B3ctVg8ubiwUa0FBZm5OM3dndE0...

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SNMPv3 with Aerohive APs and Net-SNMP

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Enable https management interface in Aerohive SR2208P, SR2224P, SR2324P and SR2348P
1) SSH in to the switch, username : admin password  is under device management settings 2) (AH-Switch) (Config)#crypto certificate generate 3) (AH-Switch) #ip http secure-server 4) (AH-Switch) #show ip http HTTP Mode (Unsecure)........................... Di...

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Aerohive SR2224P port routing configuration example
With this configuration one physical port need to be allocated per subnet ---  in configure ---- ip routing         %enable routing globally  interface 1/0/1 routing ip address 192.168.1.1 255.255.255.0 exit                    interface 1/0/2 routing ip add...

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Aerohive 2324P , 2348P SFP not working, how to fix ?
If you run in to the issue that in  SR2348P and SR2324 SFPs doesn’t link up (LED not turning on when the SFP and cables are connected from one switch to another), probably its a speed mismatch issue , SFP doesn’t work in auto mode. Set the speed according t...
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