Ucarp - Flapping
Hello Everyone!
I am already configured ucarp with 2 Virtual Machine on separate HOST (vmware vshere 5.1). Everything works fine! Today network admin talked about flapping between the two vm's which i am configured ucarp. When i open logs for both vm, it show me a lot of warnoing as bellow:
ucarp[473]: [WARNING] Bad digest – md2=[f9dc12f8…] md=[09c565cf…] – Check vhid, password and virtual IP address
OS: Oracle Linux 6.6
My configuration as bellow:
Server 1
/etc/ucarp/vip-001.conf
ID=”001″
BIND_INTERFACE=”eth0″
SOURCE_ADDRESS=”x.x.x.y”
VIP_ADDRESS=”x.x.x.z”
PASSWORD=”mypass”
OPTIONS=”–shutdown –preempt –advskew=10″
----------------------------------------------------------------------------
Server 2
/etc/ucarp/vip-001.conf
ID=”001″
BIND_INTERFACE=”eth0″
SOURCE_ADDRESS=”x.x.x.a”
VIP_ADDRESS=”x.x.x.z”
PASSWORD=”mypass”
------------------------------------
/usr/libexec/ucarp/vip-up
#!/bin/sh
exec 2>/dev/null
/sbin/ifconfig eth0:0 x.x.x.z/24 up
-------------------------------------------------------
/usr/libexec/ucarp/vip-down
#!/bin/sh
exec 2>/dev/null
/sbin/ifconfig eth0:0 down
-----------------------------------------------
I am already enabled promiscuous mode on both hosts network (vmware)
Where is the issue?
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