Members are increasingly interested in expanding
their Internet connections beyond 1Gb.
In an ideal world, budgets would be plentiful enough to make investments
in a (preferably redundant) 10Gb edge routing infrastructure. But what if funding is unavailable,
10Gb is seen as unnecessary or excessive, or Enterprise Edge architecture makes
such a move unfeasible?
In these cases, one potential solution is to terminate
numerous 1Gb connections into a CPE.
Providing the member’s on-premises equipment has sufficient available
ports to support the handoffs, this method provides a flexible and cost
effective design. Once multiple
connections exist between OSHEAN’s equipment and CPE, additional BGP peerings
can be established. Activating BGP multipath
will then allow for parallel routes, of equal cost, to be added to the routing
table.
Prior to making such a change to the edge routing
environment, it’s important to first verify that the router(s) on which the new
peering(s) will be set up will have sufficient memory to store the next hop for all
associated prefixes. Although from a
memory perspective, adding an addition default I1 route should make minimal
impact, expanding I2 routing tables which contain 14,000 prefixes and
especially full I1 routing tables which are just shy of 500,000 prefixes
require some additional consideration.
Typical IPv6 routing tables contain considerably fewer prefixes.
OSHEAN’s engineering
staff has extensive experience establishing these peerings and are available to
assist members as they investigate the various options available to them. If your organization is interesting in
establishing BGP multi-path, please call the OSHEAN NOC.