IBM Direct Link
To create a new IBM Direct Link Connect service, customers need to create a Direct Link Connect service via the IBM portal and select the location (e.g. Amsterdam), provider (Colt) and a bandwidth between 50Mbps and 5Gbps. Customers will also be required to select routing details.
Once the service has been created, IBM need to approve the request – this may take several hours.
All Direct Link services are handed over on a shared NNI between Colt and IBM.
Connections to IBM Direct Link Connect ports
Connections to IBM Direct Link Connect ports are based on a 1:1 circuit connection to hosted port mapping. The cloud B end configuration is always based on single 802.1Q VLAN* – this is automatically configured when the default “Cloud VLAN” option is selected. * The Ethertype is 8100, although this is not visible to customers
The standard VLAN modes apply at the customer A end port, which are summarised in the below table:
|Application||Open port||Circuit occupies whole A end port||Port based handover, all traffic on the customer port is mapped to the cloud port|
|Add VLAN||Customer uses single tagged VLAN to map traffic||VLAN added on egress, towards customer (in translation mode). VLAN can be S-VLAN (88a8) or C-VLAN (8100). Standard H&S config. VLAN contains three “inner” VLANs. Customer needs to map inner VLANs to “outer” tag|
IBM Direct Link Connect configuration
The below diagram summarises the configuration:
Handoff to IBM is via a VLAN on a single NNI - based on 802.1Q tagging. Colt automatically assigns VLAN address on NNI
Ethernet circuit between IBM NNI and A end customer site
Handoff to customer is via a dedicated port (open mode) or via an NNI/hub (add VLAN).
Customer is responsible for establishing BGP peering between their router & IBM
End-to-end customer journey
The customer journey to establish end to end connectivity to an IBM interconnect port is illustrated below:
IBM Direct Link Dedicated Ports
Connections to 10Gbps IBM Direct Link dedicated ports can be supported via a standard DCNet On Demand port – providing a DC cross connect is requested via the On Demand portal (the IBM LOA should be attached to the cross connect request).