Redundant links between subnets

We have two subnets connected by two wireless connections. The wireless
connections are unreliable.

The wireless connections have IP nodes on each end.. thus we have the
10.0.0.250 and 10.0.0.254 links on our 10.0.0.0/24 subnet and the
10.0.1.250 and 10.0.1.254 nodes on the 10.0.1.0/24 subnet.

I'd like to use the links (a) redundantly and (b) in a load-balancing
fashion. We have two cisco 1841 routers in each subnet acting as a
firewall and defaultroute. I know etherchannel/trunk will make two
layer 2 links redundant. But I dont know what to use.

I've been reading on VRRP HSRP and GLBP, but they make routers
redundant. This would work if the wireless nodes were cisco, alas
they're not. I read about DLSw+ but that works on layer2 as well.

Then I've been digging around OSPF and EIGRP, which might solve the
problem. But OSPF links go down having not received hello packets 3
times or so. That may take 10 seconds of total downtime before IP is
routed through the other link. Our application is tolerant of upto 2-3
seconds of delay (TCP/ODBC), but will break if packets are dropped with
destination host unreachable. I dont know if in this case OSPF will
resend the packet through the other link so nothing is lost. If it
does, and hello packets are frequent enough, my problem is solved.

But I'm wondering about other cisco shrink-wrapped technology that just
works for redundant layer 3 routes without a full-blown routing
protocol. Can any expert here give me a better clue before I give
OSPF/EIGRP a shot?

Yes I've scoured the cisco site, news groups and routerie.com for the
past 5 days.

.

Relevant Pages

  • Re: Redundant links between subnets
    ... layer 2 links redundant. ... This would work if the wireless nodes were cisco, ... Then I've been digging around OSPF and EIGRP, ... But OSPF links go down having not received hello packets 3 ...
    (comp.dcom.sys.cisco)
  • Re: Redundant links between subnets
    ... The wireless connections have IP nodes on each end.. ... layer 2 links redundant. ... details on those wireless boxes would be requireded - make, model,OS ...
    (comp.dcom.sys.cisco)