Best guess approximation? Say not more than 1 minute per router (* N router hops between 1 edge of network and the other?) typically more like 10 seconds on moderately loaded routers/links? Assuming you aren't re-establishing each iBGP session from scratch and only receiving an update from 1 connection (peer or customer)? Does that sound reasonable? -Deepak. On Wed, 18 Nov 1998, Sean M. Doran wrote:
Ben Black wrote:
| The key to this is that the administrative preference in question has domain | scope. Assuming you are correctly implementing iBGP, whether with a full | mesh, reflectors, or confederations, and assuming consistent announcements | from external route originators, then you can't make a loop because the | same policy is in effect for all the routers in the AS.
You will not form a *persistent* loop or black-hole. However, as there is invariably some degree of propagation delay among iBGP speakers, particularly in a large network, there can be short-lived loops or black-holes when converging upon routing changes.
Sean.