System Management Release Notes
4.16 OpenVMS Cluster Systems
4.16.1.3 Alpha Satellite Node Requires LAN Channels With Disk Server
V8.4
Alpha satellite boot fails in an IP only environment. That is, while booting an
Alpha satellite, if all the nodes, including the boot servers, are using only IP
channels for cluster communication, the satellite boot fails with the following
message:
cluster-W-PROTOCOL_TIMEOUT, NISCA protocol timeout %VMScluster-I-REINIT_WAIT,
Waiting for access to the system disk server
4.16.1.4 IPv6 Support
V8.4
Cluster over IP does not support IPv6 type address for cluster communication
interface.
4.16.1.5 Dynamic Host Configuration Protocol (DHCP) or Secondary Address Support
V8.4
Cluster over IP requires the addresses that are used for cluster communication,
which are static, primary address on that interface. Furthermore, IP address
used for cluster communication must not be used for Failsafe configuration.
4.16.1.6 Multiple IP Interface Configuration
V8.4
If you configure multiple IP interface with the same default gateway, loss of
communication on any interface may result in disrupted cluster communication
with CLUEXITS.
4.16.1.7 ifconfig Command Usage
V8.4
If the interface used for cluster communication is reactivated by ifconfig, it
results in losing cluster communication to other nodes and also results in cluexit
of nodes.
4.16.1.8 Multiple Gateway Configuration
V8.4
Cluster over IP configuration information is stored in the configuration files,
which are loaded early in the boot time. This configuration information also
includes the default route or gateway that is used by TCP/IP. Currently, only one
default route can be entered in the configuration file and used during the node
bootup.
4.16.1.9 Block Transfer XMIT Chaining
V8.4
PEdriver emulates each IP interface used for cluster communication similar to
lan interface (BUS). An IP bus will have the characteristics of Xchain_Disabled
status as shown. This means that the block transfer packets transmitted through
TCP/IP are copied from the PEdriver to the TCP/IP buffers.
System Management Release Notes 4–15
