0 Replies Latest reply on Sep 27, 2018 7:44 AM by jawwad05

    GRE tunnel Status

    jawwad05

      We are monitoring gre tunnels between our core Juniper SRX Junos firewall and ISP, problem is that -even if the router on the other end is down, tunnel still shows green and up.describe more detail when see the interface status… its always up … but when we go in deep and show interface detail ..its show Gre keepalives adjacency state which show the real status i.e. Down or Up,  Screen shot attached of NMS and the configuration for your ready reference.

       

       

      Please guide further.

       

       

      DR-WAN-RTR-A> show interfaces terse | match gr- 

      gr-0/0/0 up    up

      gr-0/0/0.0 up up   inet     172.31.0.XX/30

      gr-0/0/0.1 up up   inet     172.31.0.XX/30

       

      {master}

      RTR-A> show interfaces gr-0/0/0.0 detail

        Logical interface gr-0/0/0.0 (Index 401) (SNMP ifIndex 636) (Generation 228)

          Flags: Up Point-To-Point SNMP-Traps 0x0 IP-Header 172.31.0.121:172.31.0.122:47:df:64:0000000000000007 Encapsulation: GRE-NULL

          Gre keepalives configured: On, Gre keepalives adjacency state: up

          Traffic statistics:

           Input  bytes :         254200311977

           Output bytes :         193909078145

           Input packets:           1576686792

           Output packets: 880040711

          Local statistics:

           Input  bytes :            258920888

           Output bytes :            539360136

           Input packets: 4608673

           Output packets: 6734033

          Transit statistics:

           Input  bytes : 253941391089 121064 bps

           Output bytes : 193369718009 86872 bps

           Input packets: 1572078119 66 pps

           Output packets: 873306678 52 pps

          Protocol inet, MTU: 1476, Generation: 287, Route table: 7

            Flags: Sendbcast-pkt-to-re

            Addresses, Flags: Is-Preferred Is-Primary

              Destination: 172.31.0.XX/30, Local: 172.31.0.XX, Broadcast: 172.31.0.XX, Generation: 248

       

       

      {master}

      -RTR-A> show interfaces gr-0/0/0.1 detail   

        Logical interface gr-0/0/0.1 (Index 400) (SNMP ifIndex 637) (Generation 229)

          Flags: Up Point-To-Point SNMP-Traps 0x0 IP-Header 172.31.0.137:172.31.0.138:47:df:64:0000000000000007 Encapsulation: GRE-NULL

          Gre keepalives configured: On, Gre keepalives adjacency state: up

          Traffic statistics:

           Input  bytes :           1951865462

           Output bytes :           2215152952

           Input packets: 9453720

           Output packets: 8966679

          Local statistics:

           Input  bytes : 5690860

           Output bytes : 8190988

           Input packets: 101615

           Output packets: 102384

          Transit statistics:

           Input  bytes : 1946174602 0 bps

           Output bytes : 2206961964 0 bps

           Input packets: 9352105 0 pps

           Output packets: 8864295 0 pps

          Protocol inet, MTU: 1476, Generation: 289, Route table: 7

            Flags: Sendbcast-pkt-to-re

            Addresses, Flags: Is-Preferred Is-Primary

              Destination: 172.31.0.XX/30, Local: 172.31.0.XX, Broadcast: 172.31.0.XX, Generation: 294

       

      {master}