How to configure APA for HP-UX?
What is HP APA:
HP (APA) “Auto Port Aggregation ” is a software that make possible to create link aggregates group. This software provide a logical grouping (lan900-lan901 etc.) two or more physical network interface under into one logical interface.
HP APA Provides this features:
• Automatic link failure detection and recovery
• Support for load balancing of network traffic across all of the links in the aggregation.
• Support for the creation of failover groups, providing a failover capability for links.
• Support for the TCP Segmentation Offload (Large Send) feature, if an aggregate is created with all Ethernet cards capable of TCP Segmentation Offload (TSO).
• Support for Virtual VLANs (VLANs) over APA link aggregates and failover groups.
• Support for 64-bit MIB (RFC 2863) statistics, if all the interfaces within a link aggregate or failover group support 64-bit statistics.
• Support for IPv6 addresses on a link aggregate or failover group.
You can get all information about HP APA features from this link.
How to Install and Configure HP APA:
Step 1: Check binaries
You can use “swlist” command for hp-ux to check if binary installed on your server.
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# swlist -l product | grep -i HP-APA HP-APA-FMT B.11.31.1705 HP Auto-Port Aggregation APA formatter product. HP-APA-KRN B.11.31.1705 HP Auto-Port Aggregation APA kernel products. HP-APA-LM B.11.31.1705 HP Auto-Port Aggregation APA LM commands. HP-APA-NETMOD B.11.31.1705 HP Auto-Port Aggregation nwmgr/NCweb libraries. HP-APA-RUN B.11.31.1705 HP Auto-Port Aggregation APA command products. |
Step 2: Verify that package is configured in the kernel
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# what /stand/vmunix | egrep -i hp_apa $Revision: hp_apa: B.11.31.1705_LR |
Step 3: Check already configured APA interface
We can observe that there is one apa interface that already configured. If you will intend to create a new APA configuration, you should remove existing configuration.These command sets will remove lan900 and save configuration. But on the other hand you can continue without remove “lan900” . So you will use next available interface which “lan901”.
# nwmgr -d -S apa -A links=all -c lan900
# nwmgr -s -S apa -A all –saved –from cu
#ifconfig lan2
#ifconfig lan2 unplumb
#ifconfig lan3
#ifconfig lan3 unplumb
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# nwmgr -S apa Class Mode Load Speed- Membership Instance Balancing Duplex ======== =========== ========= ==================== =========================== lan900 MANUAL LB_MAC 2.000000 Gbps Full Duplex2,3 lan901 Not_Enabled LB_PORT 0.000000 Mbps - lan902 Not_Enabled LB_PORT 0.000000 Mbps - lan903 Not_Enabled LB_PORT 0.000000 Mbps - lan904 Not_Enabled LB_PORT 0.000000 Mbps - |
Step 4: Create link aggregation
You need to check configuration file that configured SYSLOG and other options.
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# cat /etc/rc.config.d/hp_apaconf|grep -v '#' HP_APA_USE_SYSLOG=1 HP_APA_START_LA_PPA=900 HP_APA_DEFAULT_PORT_MODE=MANUAL HP_APA_INTERFACE_NAME[0]=lan900 HP_APA_LOAD_BALANCE_MODE[0]=LB_MAC |
Find suitable interface that you will use to create aggregation. We will use lan2 and lan3 for our test.
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#nwmgr Name/ Interface Station Sub- Interface Related ClassInstance State Address system Type Interface ============== ========= ============== ======== ============== ========= lan0 DOWN 0xD439EF06A2A0 iocxgbe 10GBASE-KR lan1 DOWN 0xD429EF0AA2A4 iocxgbe 10GBASE-KR lan2 UP 0xD429EF2bA2A8 iocxgbe 10GBASE-KR lan3 UP 0xD41E126V3ABC iocxgbe 10GBASE-KR lan4 UP 0xE4115B6V4248 iocxgbe 10GBASE-KR lan5 UP 0xE4115B6V424C iocxgbe 10GBASE-KR |
Now, we create a command sets to configure lan900 and also save it. You can check APA document which I added above. There are some options that you need to change. For example I used lb mode LB_MAC. This mode is used by default.
Other options is “mode”. You can define this parameter like “LACP_AUTO ” etc. It depends on what you need?
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##Create lan900 interface## #nwmgr -a -S apa -c lan900 -A links=2,3 -A mode=MANUAL -A lb=LB_MAC ##Save Configuration## #nwmgr -s -S apa -A all --saved --from cu ##Check Configuration## #nwmgr -S apa -I 900 -A all |
Step 5: Configure IP information
You sould edit this configuration file to define IP address.(/etc/rc.confg.d/netconf )
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#vi /etc/rc.confg.d/netconf INTERFACE_NAME[1]="lan900" IP_ADDRESS[1]="192.128.125.80" SUBNET_MASK[1]="255.255.255.0" BROADCAST_ADDRESS[1]="" INTERFACE_STATE[1]="up" DHCP_ENABLE[1]="0" INTERFACE_MODULES[1]="" ROUTE_SOURCE[1]="" ROUTE_SKIP[1]="" ROUTE_GATEWAY[1]="192.128.125.10" ROUTE_DESTINATION[1]="default" ROUTE_COUNT[1]="1" |
Step 6: Restart APA and Network
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##Apa Restart## #/sbin/init.d/hpapa stop #/sbin/init.d/hpapa start ##Network Restart## #/sbin/init.d/net stop #/sbin/init.d/net start |
Abdurrahim
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