SRX

 View Only
last person joined: 3 days ago 

Ask questions and share experiences about the SRX Series, vSRX, and cSRX.

  • 1.  what is the command that allow configure MTU 1336 for st0

    Posted 25 days ago
      |   view attached

    hello

    show ospf interface extensive           ( srx 100)         

    st0.0               PtToPt  0.0.0.0         0.0.0.0         0.0.0.0            1

      Type: P2P, Address: 0.0.0.0, Mask: 0.0.0.0, MTU: 9192, Cost: 2======>  the problem  how to configure this with mtu MTU: 1336

      Adj count: 0

      Hello: 10, Dead: 40, ReXmit: 5, Not Stub

      Auth type: None

      Protection type: None

      Topology default (ID 0) -> Cost: 2

    st0.0               PtToPt  0.0.0.0         0.0.0.0         0.0.0.0            0

      Type: P2P, Address: 172.16.7.2, Mask: 255.255.255.252, MTU: 1336, Cost: 2

      Adj count: 0, Passive

      Hello: 10, Dead: 40, ReXmit: 5, Not Stub

      Auth type: None

      Protection type: None

      Topology default (ID 0) -> Passive, Cost: 2

    SRX100

    what the command  that allow  configure MTU  1336 for st0

    st0.0              

      Type: P2P, Address: 0.0.0.0, Mask: 0.0.0.0, MTU: 9192, Cost: 2=========>  msut  will be MTU : 1336

    like

    st0.0               PtToPt  0.0.0.0         0.0.0.0         0.0.0.0            0

      Type: P2P, Address: 172.16.7.2, Mask: 255.255.255.252, MTU: 1336, Cost: 2================>  this is ok

    because the ospf neigbhor is extract bewtenn fortigate and srx  100

    Dans  le srx93



    ------------------------------
    Dhikra Marghli
    ------------------------------


  • 2.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 25 days ago

    For the st0 interfaces the mtu gets set down at the unit level per instances.  For example

    set interfaces st0 unit 0 family inet mtu 1336



    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
    ------------------------------

    Original Message


  • 3.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 25 days ago

    hello

    thanks  for your reply

    we try to configure but the problem   that  i want  

    show ospf interface extensive           ( srx 100)         

    st0.0               PtToPt  0.0.0.0         0.0.0.0         0.0.0.0            1

      Type: P2P, Address: 0.0.0.0, Mask: 0.0.0.0, MTU: 9192, Cost: 2======>  the problem  how to configure this with mtu MTU: 1336

    because  9192  and  we have SRX100H  so how i can force    address: 0.0.0.0, Mask: 0.0.0.0, MTU  ===> 1336 ??

    regards 



    ------------------------------
    Dhikra Marghli
    ------------------------------

    Original Message


  • 4.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 25 days ago

    I don't have an old SRX to check, but on a newer one with JunOS 21.4, the output of show interface st0.0 and show ospf interface extensive do show the same MTU. Are you saying that's not the case for you? Please run both commands and confirm.

    You shouldn't need to, but you can also try configuring an MTU value in OSPF configuration as well: set protocols ospf area 0.0.0.0 interface st0.0 mtu 1336



    ------------------------------
    Nikolay Semov
    ------------------------------

    Original Message


  • 5.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 23 days ago

    hello

    Thanks for your reply

    But   set protocols ospf area 0.0.0.0 interface st0.0 mtu 1336  is  eardy   configured 

    and then  you will have 

    i don't unterstand how configure or edit 9000 by 3336  ?

    i wait a reply

    regards 



    ------------------------------
    Dhikra Marghli
    ------------------------------

    Original Message


  • 6.  RE: what is the command that allow configure MTU 1336 for st0

     
    Posted 23 days ago

    I understand what you're asking/saying, but what difficulties are you facing i.e. what problem are you trying to solve?


    Original Message


  • 7.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 20 days ago

    st0.0               PtToPt  0.0.0.0         0.0.0.0         0.0.0.0            0

      Type: P2P, Address: 172.16.7.2, Mask: 255.255.255.252, MTU: 1336, Cost: 2=======> it is ok  ========>  mtu  ospf  is ok 

      Adj count: 0, Passive

      Hello: 10, Dead: 40, ReXmit: 5, Not Stub

      Auth type: None

      Protection type: None

      Topology default (ID 0) -> Passive, Cost: 2

    SRX100

    st0.0              

      Type: P2P, Address: 0.0.0.0, Mask: 0.0.0.0, MTU: 9192, Cost: 2=========>  it is not ok===>  because still  9192  

    how i can force  that mtu( physique )  in st0  must 1336  AND  not   9192 

    because ospf bewteen fortigate and srx  are exstrat and full

    please i wait your reply and help 

    regrads



    ------------------------------
    Dhikra Marghli
    ------------------------------

    Original Message


  • 8.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 24 days ago

    I'm able to configure and see the assigned mtu on an SRX100H in my lab.

    root@steve> show configuration interfaces st0

    unit 0 {

        family inet {

            mtu 1336;

        }

    }

    root@steve> show interfaces st0 

    Physical interface: st0, Enabled, Physical link is Up

      Interface index: 130, SNMP ifIndex: 503

      Type: Secure-Tunnel, Link-level type: Secure-Tunnel, MTU: 9192

      Device flags   : Present Running

      Interface flags: Point-To-Point

      Input rate     : 0 bps (0 pps)

      Output rate    : 0 bps (0 pps)

      Logical interface st0.0 (Index 85) (SNMP ifIndex 507)

        Flags: Point-To-Point SNMP-Traps Encapsulation: Secure-Tunnel

        Input packets : 0

        Output packets: 0

        Security: Zone: Null

        Protocol inet, MTU: 1336

          Flags: Sendbcast-pkt-to-re, User-MTU



    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
    ------------------------------

    Original Message


  • 9.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 17 days ago

    Hello

    The problem is that OSPF is not working between Fortigate and SRX due to an MTU issue.

    So, can you please help me?

    Which commands can you provide to investigate this problem?

    i wait  your reply

    regards 



    ------------------------------
    Dhikra Marghli
    ------------------------------

    Original Message


  • 10.  RE: what is the command that allow configure MTU 1336 for st0

    Posted 13 days ago

    The key is to set the mtu on the interface hierarchy itself as  well , not just under OSPF

    set interfaces st0 unit 0 point-to-point
set interfaces st0 unit 0 family inet mtu 1336
set interfaces st0 unit 0 family inet address 172.16.7.2/30

show interfaces st0.0                              
  Logical interface st0.0 (Index 85) (SNMP ifIndex 507)
    Flags: Point-To-Point SNMP-Traps Encapsulation: Secure-Tunnel
    Input packets : 0
    Output packets: 0
    Security: Zone: Null
    Protocol inet, MTU: 1336
      Flags: Sendbcast-pkt-to-re, User-MTU
      Addresses, Flags: Is-Preferred Is-Primary
        Destination: 172.16.7.0/30, Local: 172.16.7.2


    ------------------------------
    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
    ------------------------------

    Original Message