Dynamic Virtual IP Address
A VIPA is configured on a TCP/IP stack. When you configure multiple paths to a stack by using VIPA and conventional IP addresses, you can eliminate hardware and transmission media as single points of failure for many connections. If a TCP/IP or its host operating system suffers an outage (for example, a power failure), you can move the VIPA to another TCP/IP stack. DVIPA automatically moves a VIPA to other TCP/IP stack members in a sysplex.
BMC AMI Ops Monitor for IPprovides the Dynamic VIPA views that you can use to monitor the DVIPAs on your z/OS host. These views display details about DVIPA configuration, DVIPA routing connection tables, and DVIPA destination port tables. You can use these views to identify the distribution of your TCP/IP resources that are attached to z/OS TCP/IP stacks.
The SYSPLEX views show all the dynamic VIPA’s for all the TCP/IP stacks in the sysplex. You can drill down on each dynamic VIPA and get more detailed information.
The following table describes the views that provide information about your DVIPAs:
Dynamic VIPA views
View | Description |
|---|---|
EZVIPA | Provides access to the Dynamic VIPA menu |
SYSPLEX | Displays dynamic virtual IP addresses (VIPAs) for all the TCP/IP stacks in the same sysplex as the current stack. |
SYSPLXCF | Displays all TCP/IP stacks in the sysplex, and the dynamic cross-system coupling facility (XCF) address that each stack is using. |
VIPABKUP (BMC.AMIOPS.SPE2401) | Displays VIPA backup configuration information |
VIPADEFN (BMC.AMIOPS.SPE2401) | Displays VIPA definition configuration information |
VIPARNGE (BMC.AMIOPS.SPE2401) | Displays VIPA range configuration information |
VIPADST | Displays VIPA distribution configuration information |
VIPARTE (BMC.AMIOPS.SPE2401) | Displays VIPA route configuration information |
VIPACONN | Displays all the connections that are being routed through the sysplex distributor to the dynamic VIPA |
VIPADYN | Displays general information about DVIPA |
VIPAWRKD | Displays VIPA Server Health Information |
VIPAPORT | Displays the VIPA destination port table information, which exists only on distributing stacks |
VIPAROUT | Displays route information |
VIPAWRKD | Displays VIPA Workload Distribution |
The VIPCONN view displays all the connections that are being routed through the sysplex distributor to the dynamic VIPA.
VIPACONN view
COMMAND ===> SCROLL ===> PAGE
CURR WIN ===> 1 ALT WIN ===>
M1 =VIPACONN=========TCPIP2======*=======ddmmmyyyy==hh:mm:ss=====MVIP=====D====0
Dest Dest Source Source Destination Stack
IPAddr Port IPAddr Port XCFAddr Name
172.19.170.20 21 172.18.198.67 3150 172.19.170.130 TCPIP2
172.19.170.20 21 172.18.198.67 3157 172.19.170.130 TCPIP2
172.19.170.20 21 172.18.198.67 3161 172.19.170.130 TCPIP2
172.19.170.20 21 172.18.198.67 3159 172.19.170.130 TCPIP2
172.19.170.20 21 172.18.198.67 3301 172.19.170.130 TCPIP2
172.19.170.20 21 172.18.198.67 3141 172.19.170.130 TCPIP2
The VIPAPORT view displays the VIPA destination port table information. The destination port table exists only on distributing stacks.
VIPAPORT view
COMMAND ===> SCROLL ===> CSR
CURR WIN ===> 1 ALT WIN ===>
W1 =VIPAPORT==========TCPIP====*========ddmmmyyyy==hh:mm:ss===MVIP=====D====8================================================================================
DVIPA Destination Dest Dest Appl Active Total Total Intvl Intvl Bytes Bytes Dist
DVIPA Port XCF Address Stack System Rdy Conns Conns Conn% Conn Conn% Out In WLM TSR Method Weight Flgs TCSR CER SEF
172.24.51.100 7521 172.24.49.149 TCPIP MZ24 0 0 0 0 0 0 0 0 0 100 BaseWLM 0 100 100 100
172.24.51.100 7521 172.24.51.137 TCPIPED2 ESAD 0 0 0 0 0 0 0 0 0 100 BaseWLM 0 100 100 100
172.24.51.100 7521 172.19.170.133 TCPIP IMSA 0 0 0 0 0 0 0 0 0 100 BaseWLM 0 100 100 100
172.24.51.100 7521 172.19.170.132 TCPIPM3 SYSM 0 0 0 0 0 0 0 0 0 100 BaseWLM 0 100 100 100
172.24.51.100 7521 172.19.170.135 TCPIP SYSP 0 0 0 0 0 0 0 0 0 100 BaseWLM 0 100 100 100
172.24.51.100 7521 172.19.170.130 TCPIP ESAJ 2 0 0 0 0 0 0 0 0 100 BaseWLM 0 100 100 100