Hi! Did you check for MTU problems? Like: The router cannot handle MTUs that are sent, and does not fragment, but discard them? Anyway tcpdump or wireshark might help.
Regards, Ulrich >>> Spike White <spikewhit...@gmail.com> schrieb am 21.06.2012 um 04:41 in Nachricht <CAO2Co24d=lc29vxtxmoa0n2wdk3lhoq+cp2q7avefzekv3t...@mail.gmail.com>: > Hi. > > I have dual redundant dedicated iSCSI NICs with RHEL5.7. So I'm running > the iscsi-initiator-utils--6.2.0.872-10.0.1.el5 that comes w/ RHEL 5.7. > It's based directly on open-iscsi. > > Using CHAP authentication. No iSCSI off-loading. > > When I do layer 2 (flat routing) where the iSCSI target portal and iSCSI > NICs are on the same subnet, all works great. > > When I move the NICs one subnet over (one hop to the iSCSI target portal), > then ping to portal works. Discovery of iSCSI targets works. But logins > to all targets hang and ultimately fail. Why? > > I've defined the gw for each iSCSI NIC in the > /etc/sysconfig/network/ifcfg-eth* files. (That's why ping and traceroute > works). > > Why did I move one subnet over? Because my network guy wants me to measure > the increased latency introduced by going from zero hops to one hop. > (They're not a fan of flat networks, too inflexible in large env's). > > Spike -- You received this message because you are subscribed to the Google Groups "open-iscsi" group. To post to this group, send email to open-iscsi@googlegroups.com. To unsubscribe from this group, send email to open-iscsi+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/open-iscsi?hl=en.
