Hey all,
I really struggle on vSRX to monitor interfaces and traffic flow problems just something I don't seem to be able to get my head around.
I seem to have all working then I make a couple of config changes and ICMP stops working for no apparent reason but I'm unable to figure out how to monitor why it suddenly stops sending a response. I've tried a few of the steps online like creating a PCAP but they haven't revealed much to me.
This is in a lab so I've opened up everything as below:
interfaces {
ge-0/0/2 {
gigether-options {
redundant-parent reth0;
}
}
ge-0/0/3 {
gigether-options {
redundant-parent reth0;
}
}
ge-0/0/4 {
unit 0 {
family inet {
address 202.20.89.1/28;
}
}
}
ge-7/0/2 {
gigether-options {
redundant-parent reth0;
}
}
ge-7/0/3 {
gigether-options {
redundant-parent reth0;
}
}
fab0 {
fabric-options {
member-interfaces {
ge-0/0/1;
}
}
}
fab1 {
fabric-options {
member-interfaces {
ge-7/0/1;
}
}
}
reth0 {
redundant-ether-options {
redundancy-group 1;
lacp {
active;
periodic slow;
}
}
unit 0 {
family inet {
address 172.16.1.1/24;
}
zones {
security-zone trust {
tcp-rst;
host-inbound-traffic {
system-services {
ping;
}
}
interfaces {
reth0.0;
}
}
security-zone untrust {
screen untrust-screen;
host-inbound-traffic {
system-services {
ping;
}
}
interfaces {
ge-0/0/4.0;
}
policies {
from-zone trust to-zone trust {
policy default-permit {
match {
source-address any;
destination-address any;
application any;
}
then {
permit;
}
}
}
from-zone trust to-zone untrust {
policy default-permit {
match {
source-address any;
destination-address any;
application any;
}
then {
permit;
}
}
}
from-zone untrust to-zone trust {
policy default-permit {
match {
source-address any;
destination-address any;
application any;
}
then {
permit;
}
}
}
default-policy {
deny-all;
}
Everything was working ok until I tried to setup NAT then internal (trust) pings stopped and even after deleting the NAT config I still get this in wireshark:
1078 661.403516 172.16.1.9 172.16.1.1 ICMP 98 Echo (ping) request id=0xd60b, seq=127/32512, ttl=64 (no response found!)
Can anyone help me monitor this interface/traffic flow to see what is going?
I can see the ICMP traffic getting to the interface then not getting a response and it seems to be happening over and over again with the smallest of config changes.
Thanks,
Charles