Midokura open sources its software

Midokura, vendor of the overlay network software MidoNet is open sourcing its core product to align itself more closely with OpenStack. MidoNet, one of the few companies who’re doing networking right, is pushing its efforts to openstack. Their previous competitor in the area of overlay virtualization networks – nicira – was aquired by VMware and their knowledge was integrated into NSX.…

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BGP Route Injection Script

BGP Route Injection Script

Maybe you’ll want to play with scaling of full feeds but you won’t setup a BGP-Session to your vital routing systems. On the other hand simulating a fullfeed takes some configuration time adding some hundred thousand routes on your testing equipment. That’s where bgp_simple enters the game. It’ a BGP route injection script and it will take a file containing paths and routing-updates in bgpdump-format and inject these into an established BGP-Session. Take a Linux-System with Net::BGP installed and get a snapshot of a Remote Route Collector, e.g. from RIPE. The Script doesn’t…

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400GbE - Ethernet Alliance Study Group

As mentioned on the Website of the Ethernet Alliance, a new study group is established which will take concern of 400 Gigabit Ethernet. It’s quite funny… 40GbE is just at finding its way into datacenters and carriers which aren’t top-notch and blessed with budgets, 100GbE is really hard to find, and the experts are already talking about the successor. Of course, equipment working and scaling to and around TBit, it’ll just be a matter of time when the new gear hits the market. At prices in the orbit, imho. Some of the questions which arise togehter with…

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Cisco releases Parts of EIGRP to the IETF

In January Cisco decided to release parts of their proprietary routing protocol “Enhanced Interiour Gateway Routing Protocol” (EIGRP) to the IETF.As one might think, not every single detail is handed over to the Internet Engineering Task force. According to the FAQ parts as “EIGRP Stub Networks” are kept close. Well, at least if you don’t need DMVPN the release may still be useful. If you’re running a heterogeneous network consisting of 2+ different vendors, chances are that the bigger ones may adopt that in upcoming firmware releases. No need to say that this will – maybe – reduce the…

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Packet of Death interrupting Intel-NICs

As reported by Kristian Kielhofner there seems to be an issue in some Intel NICs shipped with the 82475-chip onboard. Packets with certain content causes the NIC to fail, which results in a disconnect and traffic disruption.Quite interesting, as the failure was more or less found by accident during drops of SIP-Calls. During the SDP-Sessions Kris recognized some weird Traffic (duplicate Audio Offers, some other traffic duplications) followed by a “link down”. Yes, link down. Combined with a lights out at the switch and loss of communication between the computer system and the PHY on the NIC. Short and…

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ProCurve 6600 Reboots - Solution

We’ve got an update to our case regarding the spontaneous reboots of our 6600’s. Well, the cause of the reboot isn’t always a memory leak or other violations… Sometimes the real issue is a layer deeper.. The engineers at HP found out (after a couple of weeks), that the issue which lead to our mendtioned reboots, is somehow coupled with the number of PSUs which are plugged in. With only one PSU the switch may reboot after ~256 days, with two PSUs the time’s divided by two, ~152 days. Now, don’t care about power redundancy…

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Thank god switches don't have a screen

Strange… nearly exactly 152 days after a firmwareupgrade some HP ProCurve 6600ml-24G’s they rebooted again. Just 152 days before they rebooted after 152 days of successfull operation, that’s why I ran a firmwareupgrade on them. Weird crashlog: CRASHLogfileshow ...Crash Log File Header.......................... Product:   HP J9263A Name:      HP Switch E6600ml-24G Date:      Oct  8 2011 17:39:18 Build:     85 Version:   K.15.06.0008 Directory: /sw/code/build/btm(K_15_06) CPU:       PPC85XX crash rec index = 1 boot type    = Hard Boot willBootType = UNKNOWN BOOT .................................................. CrashRecordPointer (ffe4ea8)  for Crash Record Index 1 ----- Crash Record:   1 at 0xffe4ea8 -----…

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