Routing

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN10;
                }
            }
        }
    }
    xe-0/0/1 {
        description "uplink to site B";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.1/30;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 10 {
            family inet {
                address 192.168.1.1/24;
            }
        }
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN10 {
        vlan-id 10;
        l3-interface irb.10;
    }
    default {
        vlan-id 1;
    }
}

Site B config

system {
    host-name SITE-B;
    login {
        user vagrant {
            uid 2000;
            class super-user;
            authentication {
            }
        }
    }
    services {
        ssh {
            root-login allow;
        }
        netconf {
            ssh;
        }
        rest {
            http {
                port 8080;
            }
            enable-explorer;
        }
    }
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "Host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN20;
                }
            }
        }
    }
    xe-0/0/1 {
        description "Uplink to Site A";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.2/30;
            }
        }
    }
    em0 {
        unit 0 {
            family inet {
                dhcp;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 20 {
            family inet {
                address 192.168.2.1/24;
            }
        }
    }
    lo0 {
        unit 0;
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
routing-options {
    router-id 192.168.1.1;
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN20 {
        vlan-id 20;
        l3-interface irb.20;
    }
    default {
        vlan-id 1;
    }
}

Hi, can 10.10.10.1 ping  10.10.10.2?   If not, check these things...

• Make sure you are connecting the vQFX PFE (vFP) and RE (vCP)  using the em1 interfaces on both pfe and re
• Check "show chassis fpc" and you should see slot 0 Online/Testing
  

I'm using vQFX in EVE-NG.  I'm assuming the setup is similar in GNS3, but I haven't used GNS3 in years.

This video I did may help.  https://youtu.be/jZY5JhEoY9s

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN10;
                }
            }
        }
    }
    xe-0/0/1 {
        description "uplink to site B";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.1/30;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 10 {
            family inet {
                address 192.168.1.1/24;
            }
        }
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN10 {
        vlan-id 10;
        l3-interface irb.10;
    }
    default {
        vlan-id 1;
    }
}

Site B config

system {
    host-name SITE-B;
    login {
        user vagrant {
            uid 2000;
            class super-user;
            authentication {
            }
        }
    }
    services {
        ssh {
            root-login allow;
        }
        netconf {
            ssh;
        }
        rest {
            http {
                port 8080;
            }
            enable-explorer;
        }
    }
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "Host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN20;
                }
            }
        }
    }
    xe-0/0/1 {
        description "Uplink to Site A";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.2/30;
            }
        }
    }
    em0 {
        unit 0 {
            family inet {
                dhcp;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 20 {
            family inet {
                address 192.168.2.1/24;
            }
        }
    }
    lo0 {
        unit 0;
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
routing-options {
    router-id 192.168.1.1;
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN20 {
        vlan-id 20;
        l3-interface irb.20;
    }
    default {
        vlan-id 1;
    }
}

Hi, can 10.10.10.1 ping  10.10.10.2?   If not, check these things...

• Make sure you are connecting the vQFX PFE (vFP) and RE (vCP)  using the em1 interfaces on both pfe and re
• Check "show chassis fpc" and you should see slot 0 Online/Testing
  

I'm using vQFX in EVE-NG.  I'm assuming the setup is similar in GNS3, but I haven't used GNS3 in years.

This video I did may help.  https://youtu.be/jZY5JhEoY9s

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN10;
                }
            }
        }
    }
    xe-0/0/1 {
        description "uplink to site B";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.1/30;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 10 {
            family inet {
                address 192.168.1.1/24;
            }
        }
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN10 {
        vlan-id 10;
        l3-interface irb.10;
    }
    default {
        vlan-id 1;
    }
}

Site B config

system {
    host-name SITE-B;
    login {
        user vagrant {
            uid 2000;
            class super-user;
            authentication {
            }
        }
    }
    services {
        ssh {
            root-login allow;
        }
        netconf {
            ssh;
        }
        rest {
            http {
                port 8080;
            }
            enable-explorer;
        }
    }
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "Host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN20;
                }
            }
        }
    }
    xe-0/0/1 {
        description "Uplink to Site A";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.2/30;
            }
        }
    }
    em0 {
        unit 0 {
            family inet {
                dhcp;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 20 {
            family inet {
                address 192.168.2.1/24;
            }
        }
    }
    lo0 {
        unit 0;
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
routing-options {
    router-id 192.168.1.1;
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN20 {
        vlan-id 20;
        l3-interface irb.20;
    }
    default {
        vlan-id 1;
    }
}

Hi, can 10.10.10.1 ping  10.10.10.2?   If not, check these things...

• Make sure you are connecting the vQFX PFE (vFP) and RE (vCP)  using the em1 interfaces on both pfe and re
• Check "show chassis fpc" and you should see slot 0 Online/Testing
  

I'm using vQFX in EVE-NG.  I'm assuming the setup is similar in GNS3, but I haven't used GNS3 in years.

This video I did may help.  https://youtu.be/jZY5JhEoY9s

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN10;
                }
            }
        }
    }
    xe-0/0/1 {
        description "uplink to site B";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.1/30;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 10 {
            family inet {
                address 192.168.1.1/24;
            }
        }
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN10 {
        vlan-id 10;
        l3-interface irb.10;
    }
    default {
        vlan-id 1;
    }
}

Site B config

system {
    host-name SITE-B;
    login {
        user vagrant {
            uid 2000;
            class super-user;
            authentication {
            }
        }
    }
    services {
        ssh {
            root-login allow;
        }
        netconf {
            ssh;
        }
        rest {
            http {
                port 8080;
            }
            enable-explorer;
        }
    }
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "Host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN20;
                }
            }
        }
    }
    xe-0/0/1 {
        description "Uplink to Site A";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.2/30;
            }
        }
    }
    em0 {
        unit 0 {
            family inet {
                dhcp;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 20 {
            family inet {
                address 192.168.2.1/24;
            }
        }
    }
    lo0 {
        unit 0;
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
routing-options {
    router-id 192.168.1.1;
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN20 {
        vlan-id 20;
        l3-interface irb.20;
    }
    default {
        vlan-id 1;
    }
}

Another interesting thing is that I downloaded the vqfx 20.2r1 images from juniper. When I boot them up and "run system software" it reports that it's running 19.4R1.10.  

Hi, can 10.10.10.1 ping  10.10.10.2?   If not, check these things...

• Make sure you are connecting the vQFX PFE (vFP) and RE (vCP)  using the em1 interfaces on both pfe and re
• Check "show chassis fpc" and you should see slot 0 Online/Testing
  

I'm using vQFX in EVE-NG.  I'm assuming the setup is similar in GNS3, but I haven't used GNS3 in years.

This video I did may help.  https://youtu.be/jZY5JhEoY9s

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN10;
                }
            }
        }
    }
    xe-0/0/1 {
        description "uplink to site B";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.1/30;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 10 {
            family inet {
                address 192.168.1.1/24;
            }
        }
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN10 {
        vlan-id 10;
        l3-interface irb.10;
    }
    default {
        vlan-id 1;
    }
}

Site B config

system {
    host-name SITE-B;
    login {
        user vagrant {
            uid 2000;
            class super-user;
            authentication {
            }
        }
    }
    services {
        ssh {
            root-login allow;
        }
        netconf {
            ssh;
        }
        rest {
            http {
                port 8080;
            }
            enable-explorer;
        }
    }
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "Host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN20;
                }
            }
        }
    }
    xe-0/0/1 {
        description "Uplink to Site A";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.2/30;
            }
        }
    }
    em0 {
        unit 0 {
            family inet {
                dhcp;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 20 {
            family inet {
                address 192.168.2.1/24;
            }
        }
    }
    lo0 {
        unit 0;
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
routing-options {
    router-id 192.168.1.1;
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN20 {
        vlan-id 20;
        l3-interface irb.20;
    }
    default {
        vlan-id 1;
    }
}

yeah, I'm starting to wonder if it's something not config related, but more an issue of the vQFX system functionality on GNS3... I'm using EVE-NG and I fired-up (2) vQFX's and imported your config's and pings and ospf are working fine.  check your arp cache and interface state.   my quess is you aren't learning an arp entry.  if not, you can't make a basic connection between the 2. 

also, does GNS3 use a RE and a separate PFE for a single vQFX node?  if so, are you making the connections between (2) different QFX's using the RE on both?  That's how I did it in EVE-NG.  like this...

site 1 (RE) xe-0/0/1 ------- xe-0/0/1 (RE) site 2

{master:0}
root@Site-A> ping 10.10.10.2
PING 10.10.10.2 (10.10.10.2): 56 data bytes
64 bytes from 10.10.10.2: icmp_seq=0 ttl=64 time=113.649 ms
64 bytes from 10.10.10.2: icmp_seq=1 ttl=64 time=114.210 ms
64 bytes from 10.10.10.2: icmp_seq=2 ttl=64 time=109.099 ms
^C
--- 10.10.10.2 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 109.099/112.319/114.210/2.289 ms

{master:0}
root@Site-A>

{master:0}
root@Site-A> show arp interface xe-0/0/1.0 no-resolve
MAC Address       Address         Interface         Flags
02:05:86:71:3f:07 10.10.10.2      xe-0/0/1.0               none

{master:0}
root@Site-A> show interfaces terse xe-0/0/1
Interface               Admin Link Proto    Local                 Remote
xe-0/0/1                up    up
xe-0/0/1.0              up    up   inet     10.10.10.1/30

{master:0}
root@Site-A>

{master:0}
root@Site-A> show ospf neighbor
Address          Interface              State     ID               Pri  Dead
10.10.10.2       xe-0/0/1.0             Full      192.168.1.1      128    39

Another interesting thing is that I downloaded the vqfx 20.2r1 images from juniper. When I boot them up and "run system software" it reports that it's running 19.4R1.10.  

Hi, can 10.10.10.1 ping  10.10.10.2?   If not, check these things...

• Make sure you are connecting the vQFX PFE (vFP) and RE (vCP)  using the em1 interfaces on both pfe and re
• Check "show chassis fpc" and you should see slot 0 Online/Testing
  

I'm using vQFX in EVE-NG.  I'm assuming the setup is similar in GNS3, but I haven't used GNS3 in years.

This video I did may help.  https://youtu.be/jZY5JhEoY9s

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN10;
                }
            }
        }
    }
    xe-0/0/1 {
        description "uplink to site B";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.1/30;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 10 {
            family inet {
                address 192.168.1.1/24;
            }
        }
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN10 {
        vlan-id 10;
        l3-interface irb.10;
    }
    default {
        vlan-id 1;
    }
}

Site B config

system {
    host-name SITE-B;
    login {
        user vagrant {
            uid 2000;
            class super-user;
            authentication {
            }
        }
    }
    services {
        ssh {
            root-login allow;
        }
        netconf {
            ssh;
        }
        rest {
            http {
                port 8080;
            }
            enable-explorer;
        }
    }
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {
    xe-0/0/0 {
        description "Host 1";
        unit 0 {
            family ethernet-switching {
                vlan {
                    members VLAN20;
                }
            }
        }
    }
    xe-0/0/1 {
        description "Uplink to Site A";
        mtu 9192;
        unit 0 {
            family inet {
                address 10.10.10.2/30;
            }
        }
    }
    em0 {
        unit 0 {
            family inet {
                dhcp;
            }
        }
    }
    em1 {
        unit 0 {
            family inet {
                address 169.254.0.2/24;
            }
        }
    }
    irb {
        unit 20 {
            family inet {
                address 192.168.2.1/24;
            }
        }
    }
    lo0 {
        unit 0;
    }
}
forwarding-options {
    storm-control-profiles default {
        all;
    }
}
routing-options {
    router-id 192.168.1.1;
}
protocols {
    ospf {
        area 0.0.0.0 {
            interface xe-0/0/1.0;
        }
    }
    igmp-snooping {
        vlan default;
    }
}
vlans {
    VLAN20 {
        vlan-id 20;
        l3-interface irb.20;
    }
    default {
        vlan-id 1;
    }
}

yeah, I'm starting to wonder if it's something not config related, but more an issue of the vQFX system functionality on GNS3... I'm using EVE-NG and I fired-up (2) vQFX's and imported your config's and pings and ospf are working fine.  check your arp cache and interface state.   my quess is you aren't learning an arp entry.  if not, you can't make a basic connection between the 2. 

also, does GNS3 use a RE and a separate PFE for a single vQFX node?  if so, are you making the connections between (2) different QFX's using the RE on both?  That's how I did it in EVE-NG.  like this...

site 1 (RE) xe-0/0/1 ------- xe-0/0/1 (RE) site 2

{master:0}
root@Site-A> ping 10.10.10.2
PING 10.10.10.2 (10.10.10.2): 56 data bytes
64 bytes from 10.10.10.2: icmp_seq=0 ttl=64 time=113.649 ms
64 bytes from 10.10.10.2: icmp_seq=1 ttl=64 time=114.210 ms
64 bytes from 10.10.10.2: icmp_seq=2 ttl=64 time=109.099 ms
^C
--- 10.10.10.2 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 109.099/112.319/114.210/2.289 ms

{master:0}
root@Site-A>

{master:0}
root@Site-A> show arp interface xe-0/0/1.0 no-resolve
MAC Address       Address         Interface         Flags
02:05:86:71:3f:07 10.10.10.2      xe-0/0/1.0               none

{master:0}
root@Site-A> show interfaces terse xe-0/0/1
Interface               Admin Link Proto    Local                 Remote
xe-0/0/1                up    up
xe-0/0/1.0              up    up   inet     10.10.10.1/30

{master:0}
root@Site-A>

{master:0}
root@Site-A> show ospf neighbor
Address          Interface              State     ID               Pri  Dead
10.10.10.2       xe-0/0/1.0             Full      192.168.1.1      128    39

Another interesting thing is that I downloaded the vqfx 20.2r1 images from juniper. When I boot them up and "run system software" it reports that it's running 19.4R1.10.  

Hi, can 10.10.10.1 ping  10.10.10.2?   If not, check these things...

• Make sure you are connecting the vQFX PFE (vFP) and RE (vCP)  using the em1 interfaces on both pfe and re
• Check "show chassis fpc" and you should see slot 0 Online/Testing
  

I'm using vQFX in EVE-NG.  I'm assuming the setup is similar in GNS3, but I haven't used GNS3 in years.

This video I did may help.  https://youtu.be/jZY5JhEoY9s

I am using GNS3.  I have 2 QFX devices configured for OSPF.  I see their hello packets to each other on wireshark but the 2 QFX devices don't see each other it seems.  They both show 0 received hello packets.  Can you take a look at my configs and tell me if you see what I am missing?

Site A config

system {
    host-name Site-A;
    syslog {
        user * {
            any emergency;
        }
        file messages {
            any notice;
            authorization info;
        }
        file interactive-commands {
            interactive-commands any;
        }
    }
    extensions {
        providers {
            juniper {
                license-type juniper deployment-scope commercial;
            }
            chef {
                license-type juniper deployment-scope commercial;
            }
        }
    }
}
interfaces {