Weird Juniper switch behavior I have bought EX4300 and SRX300 on ebay to study it and started to read documentation.
After some time i wanted to test my knowledge and configure it to test it at home.
I have managed to set up SRX300 as a router with ge-0/0/[0-3] ports configured as untagged with different subnetworks in each of them, and SRX works as a clock without any problem.
But when i wired SRX and EX, i found some unexpected behavior.
Configuration Description:
SRX subnetwork EX
ge-0/0/0 mgmt ge-0/0/0
ge-0/0/1 home ge-0/0/2
ge-0/0/2 pbx ge-0/0/4
ge-0/0/3 video ge-0/0/6
When i connected patch cord from SRX ge-0/0/1 to EX ge-0/0/2 (both interfaces configured as home subnetwork) all worked fine, but when i connected second patch cord from SRX ge-0/0/0 to EX ge-0/0/0 (both interfaces configured as mgmt subnetwork) all devices on home subnetwork stopped discovering default gateway in this subnetwork.
Same situation goes to other subnetworks, when i connect only pbx subnetwork patch cord all works fine, until i connect home subnetwork patch cord.
If i connect video and pbx subnetwork only pbx works.
If i connect all of them, only mgmt works.
All other configuration, except this 4 ports with untagged networks on each of them works fine.
I don't understand, what could cause this behavior, can someone explain it to me?
EX4300 configuration:
root> show configuration
## Last commit: 2019-04-16 10:40:12 EEST by root
version 20190319.203446_builder.r1013243;
groups {
global {
system {
login {
....
}
}
}
}
apply-groups global;
system {
login {
user root {
....
}
}
root-authentication {
....
}
services {
ssh {
root-login deny;
protocol-version v2;
port 22;
}
web-management {
http {
interface me0.0;
}
https {
system-generated-certificate;
}
}
}
auto-snapshot;
time-zone Europe/Kiev;
name-server {
8.8.8.8;
8.8.4.4;
1.0.0.1;
1.1.1.1;
}
syslog {
user * {
any emergency;
}
file messages {
any notice;
authorization info;
}
file interactive-commands {
interactive-commands any;
}
}
processes {
dhcp-service {
traceoptions {
file dhcp_logfile size 10m;
level all;
flag all;
}
}
}
}
interfaces {
ge-0/0/0 {
unit 0 {
family ethernet-switching {
vlan {
members mgmt;
}
}
}
}
ge-0/0/2 {
unit 0 {
family ethernet-switching {
vlan {
members home;
}
}
}
}
ge-0/0/4 {
native-vlan-id 22;
unit 0 {
family ethernet-switching {
interface-mode trunk;
vlan {
members [ pbx home ];
}
}
}
}
ge-0/0/6 {
unit 0 {
family ethernet-switching {
vlan {
members video;
}
}
}
}
ge-0/0/8 {
unit 0 {
family ethernet-switching {
vlan {
members guest;
}
}
}
}
ge-0/0/9 {
unit 0 {
family ethernet-switching {
vlan {
members home;
}
}
}
}
ge-0/0/10 {
unit 0 {
family ethernet-switching;
}
}
ge-0/0/11 {
unit 0 {
family ethernet-switching {
vlan {
members home;
}
}
}
}
ge-0/0/12 {
unit 0 {
family ethernet-switching {
vlan {
members video;
}
}
}
}
ge-0/0/13 {
unit 0 {
family ethernet-switching {
vlan {
members mgmt;
}
}
}
}
ge-0/0/14 {
unit 0 {
family ethernet-switching {
vlan {
members video;
}
}
}
}
ge-0/0/15 {
unit 0 {
family ethernet-switching {
vlan {
members mgmt;
}
}
}
}
ge-0/0/16 {
unit 0 {
family ethernet-switching {
vlan {
members pbx;
}
}
}
}
ge-0/0/17 {
unit 0 {
family ethernet-switching {
vlan {
members pbx;
}
}
}
}
ge-0/0/18 {
unit 0 {
family ethernet-switching {
vlan {
members pbx;
}
}
}
}
ge-0/0/19 {
unit 0 {
family ethernet-switching {
vlan {
members pbx;
}
}
}
}
ge-0/0/20 {
native-vlan-id 5;
unit 0 {
family ethernet-switching {
interface-mode trunk;
vlan {
members [ mgmt home guest ];
}
}
}
}
ge-0/0/21 {
unit 0 {
family ethernet-switching {
vlan {
members video;
}
}
}
}
ge-0/0/22 {
native-vlan-id 5;
unit 0 {
family ethernet-switching {
interface-mode trunk;
vlan {
members [ mgmt guest home ];
}
}
}
}
ge-0/0/23 {
unit 0 {
family ethernet-switching {
interface-mode trunk;
vlan {
members [ home pbx video guest mgmt ];
}
}
}
}
ge-0/2/0 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
xe-0/2/0 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
ge-0/2/1 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
xe-0/2/1 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
ge-0/2/2 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
xe-0/2/2 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
ge-0/2/3 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
xe-0/2/3 {
unit 0 {
family ethernet-switching {
storm-control default;
}
}
}
irb {
unit 5 {
family inet {
address 10.5.5.43/24;
}
}
unit 11 {
family inet {
address 10.33.11.43/24;
}
}
unit 12 {
family inet;
}
unit 22 {
family inet {
address 10.41.22.43/32;
}
}
unit 23 {
family inet;
}
}
me0 {
unit 0 {
family inet {
address 172.16.27.43/24;
}
}
}
}
forwarding-options {
storm-control-profiles default {
all;
}
dhcp-relay {
server-group {
home-dhcp {
10.33.11.1;
}
pbx-dhcp {
10.41.22.1;
}
}
group all {
interface irb.11;
interface irb.22;
}
}
}
protocols {
lldp {
interface all;
}
lldp-med {
interface all;
}
igmp-snooping {
vlan default;
}
rstp {
interface all;
}
}
poe {
interface all;
}
vlans {
home {
vlan-id 11;
l3-interface irb.11;
}
guest {
vlan-id 12;
l3-interface irb.12;
}
mgmt {
vlan-id 5;
l3-interface irb.5;
}
pbx {
vlan-id 22;
l3-interface irb.22;
}
video {
vlan-id 23;
l3-interface irb.23;
}
}
{master:0}
