Problem-Statement: 

LEF Connectivity via ADC towards Analytics/Log-Collector is not getting established since the return route from Analytics/Log-Collector was not configured towards the tvi IP assigned by the Director for LEF connectivity on the Controller.

Please be sure to add a return route on Analytics to establish the LEF connectivity

ANALYTICS/LOG-COLLECTOR: 

Below we don't see a response, since there is no reverse route.

admin@van-analytics:~$ sudo tcpdump -i eth1 port 1234

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

listening on eth1, link-type EN10MB (Ethernet), capture size 262144 bytes

01:42:33.489763 IP 10.10.0.0.58702 > van-analytics-01.1234: Flags [S], seq 3354439400, win 65535, options [mss 1200,nop,wscale 6,sackOK,TS val 343785 ecr 0], length 0

01:42:36.689462 IP 10.10.0.0.58702 > van-analytics-01.1234: Flags [S], seq 3354439400, win 65535, options [mss 1200,nop,wscale 6,sackOK,TS val 346984 ecr 0], length 0

01:42:39.888995 IP 10.10.0.0.58532 > van-analytics-01.1234: Flags [S], seq 3354439400, win 65535, options [mss 1200,nop,wscale 6,sackOK,TS val 350183 ecr 0], length 0

01:42:43.088265 IP 10.10.0.0.58532 > van-analytics-01.1234: Flags [S], seq 3354439400, win 65535, options [mss 1200,nop,wscale 6,sackOK,TS val 353383 ecr 0], length 0

CONTROLLER:

admin@Controller-cli> show configuration orgs org-services Versa adc lb virtual-services

VAN-VIP {

    type               any;

    address            10.10.0.0;

    port               1234;

    state              enabled;

    default-pool       VAN-Pool;

    fallback-to-active disabled;

    mac-track          disabled;

    routing-instance   Versa-Control-VR;

    snat-pool          Analytics_SNAT;

}

admin@Controller-cli> show configuration orgs org-services Versa objects snat Analytics_SNAT

v4-address-list [ 10.10.0.0 ];

ANALYTICS: 

Solution

Example: Add a route pointing to the GW on the Analytics:

admin@van-analytics:~$ sudo route -n

Kernel IP routing table

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface

0.0.0.0         10.40.0.1       0.0.0.0         UG    0      0        0 eth0

10.40.0.0       0.0.0.0         255.255.0.0     U     0      0        0 eth0

192.168.100.0   0.0.0.0         255.255.255.0   U     0      0        0 eth1

admin@van-analytics:~$ sudo route add -net 10.10.0.0/16 gw 192.168.100.102

Add a persistent route under /etc/network/interfaces

post-up route add -net 10.10.0.0 netmask 255.255.0.0 gw 192.168.100.102