dedicated network interface card for backup on hpux

[Shivkumar]

How to figure out whether any particular dedicated network interface is being used for taking backup on hpux system ?

Thanks,
Shiv

[Mel Burslan · Accepted solution]

to accomplish this, you need to specify a static route to the backup media server, i.e., between the server to be backed up and server which hosts the backup tape drives. After this, when backup process needs to transfer data to the devices, it will use this static route

[baiju_3]

Do a trace route to your backup server and see through which i/f the packets are routed .


The backup trafic will use the same i/f during backup operation.

thx,
bl.

[Arunvijai_4]

Shiv, You need to do a traceroute to the backup media and find out how it goes.

# traceroute
Version 1.4a5 with HP mods
Usage: traceroute [-dFInrvx] [-6] [-f first_ttl] [-g gateway] [-i iface]
[-m max_ttl] [ -p port] [-q nqueries]
[-s src_addr] [-t tos] [-w waittime]
host [packetsize]

-Arun

[morganelan]

if you plan to do backup during production hours by using snapshot or BCV technology, and the production servers themselves run the backup engine through the SAN, then using a third HBA zoned with the tape library is a good idea. This will prevent and tape traffic from running over the load balanced production disk HBAs.

[Devender Khatana]

Hi,

Normally one interface is defined as default and the same is used to reach all undefined network IPs. Here you can define one more route through second interface to your backup server so that the route to backup server is through the second interface.

#netstat -rn
Routing tables
Destination Gateway Flags Refs Interface Pmtu
127.0.0.1 127.0.0.1 UH 0 lo0 4136
10.51.11.100 10.51.11.100 UH 0 lan901 4136
10.51.10.100 10.51.10.100 UH 0 lan900 4136
10.51.11.0 10.51.11.100 U 2 lan901 1500
10.51.10.0 10.51.10.100 U 2 lan900 1500
127.0.0.0 127.0.0.1 U 0 lo0 0
default 10.51.10.1 UG 0 lan900 0

#lanscan
Hardware Station Crd Hdw Net-Interface NM MAC HP-DLPI DLPI
Path Address In# State NamePPA ID Type Support Mjr#
LinkAgg0 0x00306E4AF6EA 900 UP lan900 snap900 8 ETHER Yes 119
LinkAgg1 0x00306E49B86A 901 UP lan901 snap901 9 ETHER Yes 119



Like in current configuration, the interface used for network 10.51.10.0 is 10.51.10.100 whereas for 10.51.11.0 it is 10.51.11.100.

HTH,
Devender

[Muthukumar_5]

You can use vsar tool for this. It is good to keep track which data is going with which network. It will live update.

or with,

# netstat -in

hth.