Dear IS Customer
Wednesday, 2nd November 2005.
IS has, for quite some time and certainly longer than a year ago, maintained standard configuration to detect, and re-route excess traffic, on the peering circuit between IS and SAIX, via its international links, to maintain service, primarily in the face of outages of the peering link, but also more recently under extreme peering congestion. The solution works transparently. When the peering circuit is working within capacity (i.e. within the 140mb ATM limit imposed by Telkom which is insufficient) there is no re-routing that needs to occur. Currently, we routinely see excess traffic peaking at 50Mb/s.
Earlier this week, SAIX implemented filters that prohibit the entry of IS-based addresses via their international links. This, in effect, incapacitates IS configuration to effect automatic re-routing decisions, and has the overall side effect of denying IS access to the SAIX network, in the event of a local peering failure.
In the current situation of endemic over-congestion on the peering link, significant volumes of traffic would continuously flow to the SAIX network via IS' international bandwidth. IS is now dropping 70mb/s on the IS side of the interface to the peering link with SAIX. We have escalated this to an Executive level within Telkom to assist with the resolution of this issue.
This is receiving urgent attention and we will keep you informed of the status in resolving this problem.
Regards,
IS Operations
Please note: do not reply to this email, as it is generated by an automated system. Thank you.
Wednesday, 2nd November 2005.
IS has, for quite some time and certainly longer than a year ago, maintained standard configuration to detect, and re-route excess traffic, on the peering circuit between IS and SAIX, via its international links, to maintain service, primarily in the face of outages of the peering link, but also more recently under extreme peering congestion. The solution works transparently. When the peering circuit is working within capacity (i.e. within the 140mb ATM limit imposed by Telkom which is insufficient) there is no re-routing that needs to occur. Currently, we routinely see excess traffic peaking at 50Mb/s.
Earlier this week, SAIX implemented filters that prohibit the entry of IS-based addresses via their international links. This, in effect, incapacitates IS configuration to effect automatic re-routing decisions, and has the overall side effect of denying IS access to the SAIX network, in the event of a local peering failure.
In the current situation of endemic over-congestion on the peering link, significant volumes of traffic would continuously flow to the SAIX network via IS' international bandwidth. IS is now dropping 70mb/s on the IS side of the interface to the peering link with SAIX. We have escalated this to an Executive level within Telkom to assist with the resolution of this issue.
This is receiving urgent attention and we will keep you informed of the status in resolving this problem.
Regards,
IS Operations
Please note: do not reply to this email, as it is generated by an automated system. Thank you.