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