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тАО05-11-2010 06:09 AM
тАО05-11-2010 06:09 AM
I recently put a fresh installation of 11.23 on our server network, and it was working fine (aside from a random SSH disconnect issue). After apply patches, no network traffic is leaving the local network on this server. There are other servers on this network that can communicate with separate networks without issue and this server can communicate with other servers on the same network without issue, but no traffic is reaching the gateway.
# netstat -rn lists the appropriate default route to the gateway.
/etc/resolv.conf
/etc/hosts
/etc/nsswitch.conf
/etc/rc.config.d/netconf
/etc/rc.config.d/nddconf
All of these config files have accurate or appropriate data in them, similar to the configuration that is working on other servers on the same network.
One side affect I have noticed is that swinstall takes an extraordinarily long time to process anything because of the lack of network communication. When starting up swinstall, I see it hangs on the "Contacting the target..." message.
Any thoughts on what might be causing the issues with networking?
Any help is greatly appreciated.
Thanks,
--John
Solved! Go to Solution.
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тАО05-11-2010 06:22 AM
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тАО05-11-2010 06:33 AM
тАО05-11-2010 06:33 AM
Re: 11.23 networking setup
This is true for other servers on the same network, and they work without issue.
Thanks
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тАО05-11-2010 08:56 AM
тАО05-11-2010 08:56 AM
Re: 11.23 networking setup
It may be duplex or negotiation error of some sort possibly at your lan switch end .
Can you post the output of
landmin -x n ,
lanadmin -g mibstats n and
landmin -g mibstats_ext n
where n is the ppa number indicated by lanscan .
To get around the the slow SD patch install problem make sure your host name is correct in the /etc/hosts file and change nsswitch.conf to use files first for DNS. SD does DNS name look up every time it calls a new function.
Mike
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тАО05-11-2010 09:13 AM
тАО05-11-2010 09:13 AM
Re: 11.23 networking setup
Sorry , typing trouble. The commands should of course be :
lanadmin -x n
lanadmin -g mibstats n
lanadmin -g mibstats_ext n
Mike
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тАО05-11-2010 10:06 AM
тАО05-11-2010 10:06 AM
Re: 11.23 networking setup
Here is the output:
# lanadmin -x 0
Current Config = 100 Full-Duplex AUTONEG
#
# lanadmin -g mibstats 0
LAN INTERFACE STATUS DISPLAY
Tue , May 11,2010 12:58:57
PPA Number = 0
Description = lan0 HP PCI 10/100Base-TX Core [100BASE-TX,FD,AUTO,TT=1500]
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 100000000
Administration Status (value) = up(1)
Operation Status (value) = up(1)
Last Change = 510345
Inbound Octets = 1516066569
Inbound Unicast Packets = 1130797
Inbound Non-Unicast Packets = 19470
Inbound Discards = 0
Inbound Errors = 0
Inbound Unknown Protocols = 54
Outbound Octets = 29432963
Outbound Unicast Packets = 275762
Outbound Non-Unicast Packets = 31
Outbound Discards = 0
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 655367
Ethernet-like Statistics Group
Index = 1
Alignment Errors = 0
FCS Errors = 0
Single Collision Frames = 0
Multiple Collision Frames = 0
Deferred Transmissions = 0
Late Collisions = 0
Excessive Collisions = 0
Internal MAC Transmit Errors = 0
Carrier Sense Errors = 0
Frames Too Long = 0
Internal MAC Receive Errors = 0
As for the SD problems, the thing that struck me as odd is that I do have files before dns in nsswitch.conf and hosts file is correct, but still the delay when using swinstall. I think that even tho nsswitch.conf had files before dns, it was still trying to use dns first, and had to timeout when trying to reach the dns server.
Thanks much for your help,
--John
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тАО05-11-2010 01:23 PM
тАО05-11-2010 01:23 PM
Re: 11.23 networking setup
Running this command:
ndd -get /dev/ip ip_ire_status shows this in the last line regarding the default gateway.
IRE_GATEWAY DEAD
Our Gateway does not respond to ping requests but see the output from the following command:
# ndd -get /dev/ip ip_ire_gw_probe
0
As I said before, netstat -rn shows the default route set correctly:
Routing tables
Destination Gateway Flags Refs Interface Pmtu
127.0.0.1 127.0.0.1 UH 0 lo0 4136
2XX.1XX.6X.X 2XX.1XX.6X.X UH 0 lan0 4136
2XX.1XX.6X.0 2XX.1XX.6X.X U 2 lan0 1500
127.0.0.0 127.0.0.1 U 0 lo0 4136
default 2XX.1XX.6X.254 UG 0 lan0 1500
# ndd -set /dev/ip ip_ire_gw_probe 0
#
# route add default 2XX.1XX.6X.254
add net default: gateway 2XX.1XX.6X.254: Network is unreachable
#
What could be wrong that the system cannot reach the default gateway? Other HP-UX installations on this network have no issue.
Thanks again,
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тАО05-11-2010 07:29 PM
тАО05-11-2010 07:29 PM
Re: 11.23 networking setup
Not sure if this is your situation but when I had a long swinstall time it was due to the fact that my servers were an ignite clone. Check /var/adm/sw/target_hosts You should see your server hostname and loopback in the file. Also another possible reason for the delay is your hostname not matching the primary DNS entry name. We had to get our DNS team to make a change and switch a DNS alias to primary on their side. (This was on an rx6600 11.23)
Lastly when we had network problems I had to work with my local network team. We traced the cables to the patch panel and then to the cisco switch. I was able to ping the switch IP from my server. It ended up being a misconfiguration on the switch itself and the network team had to apply a patch to the cisco switch.
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тАО05-11-2010 09:49 PM
тАО05-11-2010 09:49 PM
Re: 11.23 networking setup
When upgrading from hpux10.20 to 11.(11/23/31) I always put the three following lines into the bottom of this file: /etc/rc.config.d/nddconf
TRANSPORT_NAME[0]=ip
NDD_NAME[0]=ip_ire_gw_probe
NDD_VALUE[0]=0
reboot
Now the hpux 11.x will act like previous versions of hpux, no need to ping the gateway...
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тАО05-12-2010 12:23 AM
тАО05-12-2010 12:23 AM
Re: 11.23 networking setup
There are no errors on the card, so the flapping duplex problem is not likely to be the cause.
For the record my ip_ire_gw_probe is set to 1 but that is on a gigabit card.
It may be a dumb question but is the subnet mask set correctly, and is the port in the switch configured for this subnet and in the correct vlan if you are using them ?
What version of the cumulative ARPA Transport patch do you have installed ?
Mike