By default Cisco routers and switches periodically test their (Fast) Ethernet links by sending out Loopback frames (ethertype 0x9000) addressed to themselves. Call it a “L2 self-ping” if you will. In a switched environment it can be used to test the functionality of the switch and/or keep the router’s MAC address in the switch’s address table.
In the exchange environment, this is not useful since we use MAC timeouts that are larger than the typical BGP and/or ARP timeouts. In fact, the keepalives may actually cause port security violations if they are being sent by an intermediate switch.
Since traffic over Omaha IX is exchanged based on BGP routes, there is no reason to answer ARP queries for any other IP address(es) than those that are configured on your exchange interface.
Unfortunately, some vendors (e.g. Cisco) ship their products with proxy ARP enabled by default.
Proxy ARP is not only sloppy, it can lead to unwanted traffic on your network. Consider that if you have it enabled at the AMS-IX, it’ll likely be enabled at other peering points, allowing parties on both sides to use you as a transit.
Proxy ARP is not allowed.
At the core of the exchange are two Arista 7550 switches that provides amble throughput using 1G/10G/40G/100G connections. Our backplane can support up to 400Gbps of traffic. The other key piece of equipment are the route servers. Our route servers are running BIRD – an internet routing daemon which has become the standard for internet exchanges.
The Omaha IX exchange point was started in January of 2014 at the Nebraska Colocation Center in Omaha, NE. This was a great location due to the connectivity that was already there and the dark fiber expansion by Neutral Path Communications. Modeled off what we learned with the Midwest Internet Cooperative Exchange – we knew there would be a great value for participents in the Omaha area.
What speed of connections are availableAlexander Martin2021-07-28T15:10:28+00:00
The speed is limited only to your connection. We currently offer 1G, 10G, 40G and 100G – in which multiple ports may be bonded together. We don’t charge you for the amount of traffic – just for your connection.
The BEST way to connect to the exchange is directly through a layer-3 device (router). It is the best chance of not leaking MAC addresses or STP traffic – as well as increases the stability of network. It is possible to connect via a layer-2 device (switch), however we strongly discourange it. If you must, there are a few guidelines in our configuration section you’ll have to meet to make sure not to disrupt your other peers
We do not require that you have your own ARIN assigned address allocation, but it certainly helps. If you do not though, we only require a Letter of Authority (LoA) from your ISP permitting you to advertise their IPv4 and/or IPv6 prefixes. You must have your own unique ASN though.