A default gateway defined in /etc/defaultrouter at activation of a system is not valid.
The setting of a default gateway defined in /etc/defaultrouter is set in /etc/rc2.d/S69inet at activation of a system. At this time, when an interface of the same segment as that of the specified router, or when not activated, it is not possible to set a default gateway. In a Redundant Line Control function, a virtual interface is activated at activation of a userApplication in cluster operation. Therefore, occasionally not possible to set a default gateway.
When using a virtual interface as a sending interface to a default gateway in cluster operation, change the timing to activate a virtual interface by a hanetparam command.
It is not possible to user a virtual interface as a sending interface to a default gateway in cluster operation.
When using a physical IP address takeover function, and also when not activating an interface in a standby node, it is not possible to use a physical interface as a sending interface to a default gateway.
It is not possible to use a virtual interface as a sending interface to a default gateway in cluster operation.
The static route information set by a route add command is deleted.
In a Redundant Line Control function, when activating and deactivating an interface, or when detected an error in a transfer route, the route information is flushed and in.routed is reactivated if necessary. At this time, the static route information set by a route command is deleted.
When using in.routed, necessary to define the static route information in /etc/gateways. For instance, to set the route information to a specific network (suppose network: 192.13.80.0, gateway address: 192.13.70.254, and metric value: 3), /etc/gateways is described as follows:
net 192.13.80.0 gateway 192.13.70.254 metric 3 passive |
The following message is displayed and activation of a system or an interface hangs up.
ypbind[xxxx]: [ID xxxxxx daemon.error] NIS server not responding for domain "domain_name"; still trying |
When a system that a Redundant Line Control function works is set as an NIS client, occasionally not possible to connect NIS server temporarily due to the process to deactivate an interface executed by a Redundant Line Control function. In such a case, if set a netmask to an interface by an ifconfig command, occasionally the process to activate a system or an interface hangs up because an ifconfig command waits for the connection with NIS server to get a subnet mask.
Be sure to set as follows when using a Redundant Line Control function in the NIS environment.
To specify "files" first in /etc/nsswitch.conf to refer "netmasks".
[Example of setting]
netmasks: files |
or
netmasks: files [NOTFOUND=return] nis |
As to accessing NIS server, design a network not to use an interface that is the target of control in a Redundant Line Control function (activation/deactivation) as possible.
Automatic stateless address configuration for IPv6 may not operate instantly when activating IPv6. As a consequence, it takes time to add site-local/global addresses.
When activating an interface for IPv6, a link-local address is added to the physical interface to activate the physical interface. To instantly create site-local/global address by the automatic stateless address configuration, it transmits the "router solicitation message" to the adjacent router to request for router advertisement message from the router. However, once the interface activates, if spanning tree protocol (STP) is running on the HUB, it takes time to hold a communication. Thus it may fail to request router advertisement messages. Because IPv6 router transmits the router advertisement message periodically and automatic stateless address automatic configuration runs after certain amount of time, it is possible to hold a communication of site-local/global addresses. Nevertheless, if the time interval parameter of transmitting the router advertisement message is set for a considerably long time, it may consume a long time until the automatic stateless address configuration starts and to hold a communication. In such case, either establish a link for operation NIC and standby NIC or modify the router setting so that a router transmits the router advertisement message within a fewer minutes interval.
