Thanks meem for the answers. most of it is now clear except for the target systems. do target systems have to be on the same subnet as the test ips and reachable via immidiate router or it could be anywhere else on the network (somewhere in different subnets) and if you can provide example of configuring target hosts.
thanks patani > > > I have a doubt about the test Ips in the IPMP > group and the daemon's > > (mpathd) use of it to probe the target systems and > detect failure. > > > > Lets say i have qfe0 and qfe1 in the IPMP group > group1. > > Questions are: > > > > 1. Do the test IPs on this interfaces have to be > in the same subnet (e.g > > 10.5.30.5 and 10.5.30.6 v/s 10.5.30.5 and > 10.5.31.5) > > All test IP addresses should be on the same subnet -- > but this need not be > the same subnet as your data addresses. That is, > assuming multiple > subnets are present on the same wire, you can use > another subnet (we often > recommend RFC1918 addresses to reduce the burden on > routable IPv4 > addresses). However, there must be other hosts on > the link that have > addresses on whatever subnet you choose. > > > 2. The Data IP (which will float) accross this 2 > interfaces and which > > application will be using also have to be in the > subnet? (e.g 10.5.30.7) > > See above; no. > > > 3. Target hosts, does it have to be the hosts in > the same subnet or > > reachable via immediate router or it can be any > where in the > > network.Please provide example of configuring > target hosts (in both > > scenarios if the 2nd scenario of target host being > somewhere in the > > network table). > See above. > > > 4. Any suggestions on using Link based failure v/s > probe based failure > > detection > > As per in.mpathd(1M): > > The in.mpathd daemon can detect NIC failure > and repair > through two methods: by monitoring the > IFF_RUNNING flag for > each NIC (link-based failure detection), and by > sending and > receiving ICMP echo requests and replies on > each NIC > (probe-based failure detection). Link-based > failure detec- > tion requires no explicit configuration and thus > is always > enabled (provided the NIC driver supports the > feature); > probe-based failure detection must be enabled > through the > configuration of one or more test addresses > (described > below), but has the benefit of testing the > entire NIC send > and receive path. > there something more you're curious about? > > -- > meem > _______________________________________________ > networking-discuss mailing list > [email protected] > This message posted from opensolaris.org _______________________________________________ networking-discuss mailing list [email protected]
