We are current preparing the redesign of the whole Datacenter Jena1 Backbone Area.

The goals of the new design are:
* more reliability than the old architecture
* more bandwidth for connected servers
* more redundancy
* load-balancing
* removal of the last SPOFs for some servers
* higher L2-security

It is planned to deploy the new architecture for Block C and D until 12/2016 and A+B until 12/2017.

* dsw-c6kb is now connected to new datacenter backbone design, we are now going to deploy the new whole dc backbone

* dsw-c6ka is now connected to new datacenter backbone design

* dsw-c6kc is now connected to new datacenter backbone design

* dsw-c6kd is now connected to new datacenter backbone design

We have started to implement incoming routing path for load-sharing and redundancy to IP-networks in Datacenter Jena1.
The following networks have been migrated today for the incoming path ("Internet -> Server"):

network 84.23.94.0/24
network 81.7.2.0/24
network 81.7.12.0/24
network 81.7.19.0/24
network 81.7.18.0/24
network 91.143.94.0/24
network 91.143.89.0/24
network 91.143.86.0/24
network 91.143.93.0/24
network 91.143.92.0/24
network 91.143.91.0/24
network 91.143.90.0/24
network 81.7.17.0/24
network 81.7.16.0/24
network 81.7.14.0/24

* new redundant links for east/west direction dsw-c6kc/dsw-c6kd added
* IPv6 has been implemented for whole new DCJ1 network

* webspace accounts switched to new IPv6 backbone config

new links added for east / west DCJ1-B to DCJ1-C

inbound load sharing added for the following networks:

network 81.7.10.0/24
network 81.7.11.0/24
network 81.7.13.0/24
network 81.7.15.0/24
network 85.31.184.128/25
network 85.31.185.0/25

We have started to implement outgoing routing path for load-sharing and redundancy to IP-networks in Datacenter Jena1.
The following networks have been already migrated for the outgoing path ("Server -> Internet"):

network 84.23.94.0/24
network 81.7.2.0/24
network 81.7.12.0/24
network 81.7.19.0/24
network 81.7.18.0/24
network 91.143.94.0/24
network 91.143.89.0/24
network 91.143.86.0/24
network 91.143.93.0/24
network 91.143.92.0/24
network 91.143.91.0/24
network 91.143.90.0/24
network 81.7.17.0/24
network 81.7.16.0/24
network 81.7.14.0/24

PC load sharing optimized between datacenter routers

additional redundancy fiber links added dsw-c6kc -> bbsw-h3-j1cr

outbound load sharing added for the following networks:

network 81.7.10.0/24
network 81.7.11.0/24
network 81.7.13.0/24
network 81.7.15.0/24
network 85.31.184.128/25
network 85.31.185.0/25

inbound load sharing added for the following networks:

network 81.7.3.0/24
network 81.7.4.0/24
network 81.7.5.0/24
network 81.7.6.0/24
network 81.7.7.0/24
network 81.7.8.0/24
network 81.7.9.0/24
network 85.31.184.0/25
network 85.31.186.0/23
network 91.143.80.0/24
network 91.143.81.0/24
network 91.143.82.0/24
network 91.143.83.0/24
network 91.143.84.0/24
network 91.143.85.0/24
network 91.143.87.0/24
network 91.143.88.0/24

finally all IPv4 dedicated server DCJ1 networks have been migrated to inbound load sharing.

outbound load sharing added for the following networks:

network 81.7.3.0/24
network 81.7.4.0/24
network 81.7.5.0/24
network 81.7.6.0/24
network 81.7.7.0/24
network 81.7.8.0/24
network 81.7.9.0/24
network 85.31.184.0/25
network 85.31.186.0/23
network 91.143.80.0/24
network 91.143.81.0/24
network 91.143.82.0/24
network 91.143.83.0/24
network 91.143.84.0/24
network 91.143.85.0/24
network 91.143.87.0/24
network 91.143.88.0/24

finally all IPv4 dedicated server DCJ1 networks have been migrated to outbound load sharing.

old OSPF config removed from bbsw-h2-dcj1a and bbsw-h3-dcjcr

We are going to prepare the gateways in DCJ1 for hardware and software upgrade:

* preparation done for Hosting-Platform VLAN IPv4/6 migrated to dsw-c6kb
* dsw-c6ka is now ready for upgrade

First step is to upgrade the router "dsw-c6ka" to a more powerful hardware and a software-version that is able to loadbalance IPv6 outgoing traffic. This task needs the following actions:

* shutdown the switch
* remove the old hardware linecards
* add the new hardware linecards
* reboot the switch
* import the prepared config
* do some reconfiguration if needed

During this time the following datacenter racks are affected with a hard downtime:

* all racks of DCJ1-A
* all racks of DJ1-CR
* IPv6 for DCJ1-A,B,C,D + CR

reason of downtime:
* theres racks are still not migrated to redundant uplink connections

estimated downtime: 30-60 min

in- and outbound load sharing added to Datacenter Jena1 Block A

We have decided to cleanup the config at router dsw-c6ka before upgrade. No impact for customers expected.

Due to a L2-topology change we had within the last 15 Minutes a short time with higher latency in DCJ1-A and B. No further impact has been seen.

We will perform the upgrade at 10.11.2016 in time-window 0600 - 0800 CET

The upgrade was finished at 0740 CET.

We have started the incoming IPv4 and IPv6 routing path ("Internet -> Servers") for vServers.