05-21-2012
Solaris Problem
I have a SUnfire V120 solaris 10 machine I have recently added memory to. After installation of the RAM, powering back on, the machine did not come back on the network. Consoled into the machine, the routing table has been wiped out completely and I had to reconfigure the IP address. I got the IP address reconfigured, but I cannot add a default gateway. I keep getting network unreachable. I am unable to add routes back into the routing table.
I have changed the network cable. I have even tried on the eri1 interface (it's main configuration was on the eri0). I still got the same result.
So, I am thinking perhaps the hardware for the ethernet ports have failed on the shutdown/reboot. Is there something else I can try to get my server back online? or should I find a new server or a Solaris specific tech that can possibly troubleshoot and replace the parts that are broken?
The memory is reading find. I don't think the RAM has affected it. I just think the server is old and hardware failure. I would like to exhaust all my options before officially declaring it "dead".
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Copyright 2007 Sun Microsystems, INC. All rights reserved.
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LEARN ABOUT X11R4
routing
routing(7P) Protocols routing(7P)
NAME
routing - system support for packet network routing
DESCRIPTION
The network facilities provide general packet routing. The routing interface described here can be used to maintain the system's IPv4 rout-
ing table. It has been maintained for compatibility with older applications. The recommended interface for maintaining the system's routing
tables is the routing socket, described at route(7P). The routing socket can be used to manipulate both the IPv4 and IPv6 routing tables
of the system. Routing table maintenance may be implemented in applications processes.
A simple set of data structures compose a "routing table" used in selecting the appropriate network interface when transmitting packets.
This table contains a single entry for each route to a specific network or host. The routing table was designed to support routing for the
Internet Protocol (IP), but its implementation is protocol independent and thus it may serve other protocols as well. User programs may
manipulate this data base with the aid of two ioctl(2) commands, SIOCADDRT and SIOCDELRT. These commands allow the addition and deletion of
a single routing table entry, respectively. Routing table manipulations may only be carried out by privileged user.
A routing table entry has the following form, as defined in /usr/include/net/route.h:
struct rtentry {
unit_t rt_hash; /* to speed lookups */
struct sockaddr rt_dst; /* key */
struct sockaddr rt_gateway; /* value */
short rt_flags; /* up/down?, host/net */
short rt_refcnt; /* # held references */
unit_t rt_use; /* raw # packets forwarded */
/*
* The kernel does not use this field, and without it the structure is
* datamodel independent.
*/
#if !defined(_KERNEL)
struct ifnet *rt_ifp; /* the answer: interface to use */
#endif /* !defined(_KERNEL) */
};
with rt_flags defined from:
#define RTF_UP 0x1 /* route usable */
#define RTF_GATEWAY 0x2 /* destination is a gateway */
#define RTF_HOST 0x4 /* host entry (net otherwise) */
There are three types of routing table entries: those for a specific host, those for all hosts on a specific network, and those for any
destination not matched by entries of the first two types, called a wildcard route.
Each network interface installs a routing table entry when it is initialized. Normally the interface specifies if the route through it
is a "direct" connection to the destination host or network. If the route is direct, the transport layer of a protocol family usually
requests the packet be sent to the same host specified in the packet. Otherwise, the interface may be requested to address the packet to an
entity different from the eventual recipient; essentially, the packet is forwarded.
Routing table entries installed by a user process may not specify the hash, reference count, use, or interface fields; these are filled in
by the routing routines. If a route is in use when it is deleted, meaning its rt_refcnt is non-zero, the resources associated with it will
not be reclaimed until all references to it are removed.
User processes read the routing tables through the /dev/ip device.
The rt_use field contains the number of packets sent along the route. This value is used to select among multiple routes to the same desti-
nation. When multiple routes to the same destination exist, the least used route is selected.
A wildcard routing entry is specified with a zero destination address value. Wildcard routes are used only when the system fails to find a
route to the destination host and network. The combination of wildcard routes and routing redirects can provide an economical mechanism for
routing traffic.
ERRORS
EEXIST A request was made to duplicate an existing entry.
ESRCH A request was made to delete a non-existent entry.
ENOBUFS Insufficient resources were available to install a new route.
ENOMEM Insufficient resources were available to install a new route.
ENETUNREACH The gateway is not directly reachable. For example, it does not match the destination/subnet on any of the network
interfaces.
FILES
/dev/ip IP device driver
SEE ALSO
route(1M), ioctl(2), route(7P)
SunOS 5.10 9 Nov 1999 routing(7P)