Unable to ping Virtual server

Hi Yehey,

 

 

You'll definitely want ARP enabled on the virtual address:

 

 

b virtual address 10.1.0.15 list

 

virtual address 10.1.0.15 {}

 

[root@ve1:Active] config ping 10.1.0.15

 

PING 10.1.0.15 (10.1.0.15) 56(84) bytes of data.

 

64 bytes from 10.1.0.15: icmp_seq=1 ttl=255 time=4.09 ms

 

64 bytes from 10.1.0.15: icmp_seq=2 ttl=255 time=1.13 ms

 

 

--- 10.1.0.15 ping statistics ---

 

2 packets transmitted, 2 received, 0% packet loss, time 1026ms

 

rtt min/avg/max/mdev = 1.131/2.612/4.094/1.482 ms

 

 

[root@ve1:Active] config b virtual address 10.1.0.15 arp disable

 

 

[root@ve1:Active] config ping 10.1.0.15

 

PING 10.1.0.15 (10.1.0.15) 56(84) bytes of data.

 

 

--- 10.1.0.15 ping statistics ---

 

3 packets transmitted, 0 received, 100% packet loss, time 2082ms

 

 

Aaron

HI Aaron,

 

 

I enabled ARP on that VIP but im still not able to ping it from a local server.

 

 

 

[root@lb1:Active] config tcpdump -i vlan1 host 192.168.100.5

 

tcpdump: listening on vlan1

 

04:45:14.277739 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:15.277727 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:16.277306 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:17.277723 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:18.277376 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:19.276774 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:20.276336 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:21.276775 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

04:45:22.276277 192.168.100.1 > 192.168.100.5: icmp: echo request (DF)

 

 

 

 

[root@lb1:Active] config b virtual address 192.168.100.5 list

 

virtual address 192.168.100.5 {

 

route advertisement enable

 

mask 255.255.255.252

 

arp enable

 

 

 

 

 

 

Any ideas on what might be hindering the icmp requests?

 

 

 

 

 

Thanks,

 

 

 

Yehey

 

Do you have 192.168.100.5 defined as a standard virtual server as well? If so, can you make sure it's set up as a host as opposed to a network virtual server?

 

 

Aaron

We utilize two LB's for failover in case the primary goes down. 192.168.100.6 is the primary and configured as a host while 192.168.100.5 is the secondary and is configured as a network. We have a couple of vip configured with this setup and this is the only one i can't ping.

 

 

I'm able to telnet to the vip and it forwards me to the primary node on the pool. Basically, the LB is working as designed, but im curious why it does not respond to pings. I checked the vlan configs on our router and all is good. We're running on Version: 9.4.1.

 

 

 

Yehey

 

It could be because of this: https://support.f5.com/kb/en-us/solutions/public/16000/200/sol16284.html