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http://w3.insidepacket.net/index.php/16-softlayer-ipsec-4 Recently, one Softlayer customer complained that they have issue when the servers on the corporate network talk to VM guest on Softlayer. &nbs
The below is real world Nexus 1000v archicture design based on Cisco UCS.Architecture Assumption: vCenter will run wthine the UCS systemKey Points:Two VSMs will work in active-standby way mode. VMware
When you perform packet capture on F5 LTM, you possibly notice there are some unknow fileds in the packet capture.These unknown data fileds are the additional diagnostic data which is encoded on tcpdu
When you analyse the packet capture in wireshark, you sometimes see the similar/nearly same packets more than 1 time. It is maybe due to duplicate packet or TCP retransimission. If it is TCP retransmi
Just performed a test at Singapore DC for Jumbo frame support.It is confirmed that Jumbo frame is supported on private network. The MTU is 9000bytes.On public network, it looks like that the MTU is se
The below is a real life example. Due to the poor IP addressing, you will see wrong OSPF summary routing has been added in the routing table under specific condition.As RFC 2328 suggests,the metric fo
Global IP's provide IP flexibility by allowing users to shift workloads between servers (even in different datacenters). Global IP's also provide IP persistence by allowing for transitions betwe
As a network guy, you possinly need to check Internet Routing table for your IP range from time to time,especailly when you have some routing change in your network.You can go to the link below and fi
(3)Customer end: Juniper SRX Firewall (policy based VPN)Phase 1set security ike proposal ike-phase1-proposal authentication-method pre-shared-keysset security ike proposal ike-phase1-proposal dh-group
(2)Customer end: Juniper SRX Firewall (route based VPN)Create tunnel interface, VPN security zone and bind tunnel interface into VPN security zoneset interfaces st0 unit 0 family inetset security zone
Who is SoftlayerSoftLayer, an IBM Company, provides cloud infrastructure as a service from 13 data centers in the United States, Asia, and Europe, and a global footprint of 17 network points of pres
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