raj@hpindwa.cup.hp.com (Rick Jones) (11/06/90)
Also sent to the Wellfleet mailing list - you aren't seeing double... ;-) Here is a routing/ICMP/brouter question... Consider a set of brouters joining several subnets with more than one brouter between any two subnets (parallel brouters) with a simple picture looking like: -------------------- subnet A ---------------------- | | ------------ ------------- | primary | | secondary | | brouter | | brouter | ------------ ------------- | | -------------------- subnet B ---------------------- Now, the question is what happens when primary dies? I assume that the 'b' part of the brouters will re-spanning-tree so that all the non-IP traffic will continue to flow. Will a similiar thing happen up at the IP routing layer? For example, will secondary send-out an ICMP redirect (broadcast?) to get hosts to switch gateways? I am really interested in solutions that do not involve much if any intelligence in the hosts except the ability to process an ICMP redirect 'the right way' ;-) Is this 'IP spanning-tree' kind of a thing available in any particular routing protocol, all protocols? Vendors? etc... rick jones