Category / NETWORK

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  • Installing JunOS by using a USB Drive

    I had to install a Junos on EX2300-C switch and I used this steps: 1.step: Download JunOS from juniper web site: Click here   I recommend to use EX2300(-C) and EX3400 Series (USB)…

  • Limiting Mac learning enable on Juniper- Junos Cli

    We can limit to mac address on juniper devices and command is here:’ cli configure #Edit ethernet-switching-options secure-access-port #Set interface ge-0/0/7 persisttent-learning #Set interface ge-0/0/7 mac-limit2 Commit checkShow ethernet-switching table persistent-mac Set…

  • Firewall Filter Types Layer 3

    Firewall Filters Layer 3 Switch Security  Firewalls are a popular choice used in restricting network traffic at layer 3  Stateless Firewalls:  Statefull Firewalls  Firewall filter:Denying traffic from entering or exiting an interface  Firewall Filtreleme suralara uygulanabilir:  -Vlans  -Switch Ports  -RVIs  *EX…

  • What is Bidirectional Forwarding Detection (BFD) on Junos ?

    The Bidirectional Forwarding Detection (BFD) protocol is a simple mechanism that detects failures in a network and works in a wide variety of network environments and topologies. In BFD operation, switches exchanges…

  • Unified In-Service Software Upgrade (ISSU) on Juniper

    The unified in-service software upgrade (ISSU) feature enables you to upgrade between two different Junos OS releases with no disruption on the control plane and with minimal disruption of traffic.  NOT:Unified ISSU is supported only on dual…

  • ROUTING POLICIES and FIREWALL FILTERS

     ​​​​ ROUTING POLICIES​​ ExplainA routing policy enables you to control (filter) which routes a routing protocol imports into the routing table and which routes a routing protocol exports​​ from the routing table. A routing policy…
  • JUNIPER DEVICES CLI — CHANGE ROOT PASSWORD

      You can change root password on juniper devices like this: 1.OPTION: *Connect to switch by putty *4start switch *press control+c *choose recovery mode  from boot menu *root> configureEntering configuration mode root#…

  • NETWORKING TUNNELS with Dynamic Routing Protocols on Juniper Devices

    NETWORKING TUNNELS *Network tunnel s typically bridge networks*Traffic can be encrypted*Examples of tunnel use includes: ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Hiding network traffic ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Providing dedudant ​​ links ​​ ​​ ​​ ​​ ​​ ​​ ​​​​ Sending non-IP over IP Networks*Encapsulators and decapsulatiors are better known as tunnel endpoins*Tunnel layersMost networks…
  • IS-IS ROUTING PROTOCOL CONFIGURATION ON JUNIPER

    IS-IS ROUTING PROTOCOL(Intermediate System-to-Intermediate System)*Link state ​​ protocol​​ ve IGP​​ protocol and​​ runs over​​ ​​ CLNS​​ *ISIS​​ doen not have phsichal​​ (Necessary for​​ Ospf )*Can support ​​ 1000 router​​ in​​ IS-IS area ​​ ​​ ​​ . (OSPF 50​​ only​​ )*Using​​ PARTIACL ROUTE Calculation (rpc)​​ algorithma​​ ​​ in IS-IS ip routing table​​ Use​​ SPF algorithm for connection…
  • OSPF Routing Protocol Configuration on Juniper Devices

    OSPF Routing Protocol OSPF has 3 types versionOSPv1, OSPv2,OSPv3​​ Routers running OSPF will usually use the destination IP Addresses 224.0..0.5 and 224.0.0.6 to send hello packets and LSAs onto the network segmentUses shortest path OSPF…
  • Routing Protocols Owerview

    Routing Protocol Types 1-Static 2-Distance Vector Protocols There are max hub Does not calculate Distance vector protocols are  “route by rumor” It is ok for middle networks They use split horizon mechanisim…

  • Juniper Software upgrades on a switch with a single Routing Engine

    1-Download the software package. 2-(Optional) Back up the current software configuration to a second storage option. See the Junos OS Installation and Upgrade Guide for instructions on performing this task. 3-(Optional) Copy…

  • Juniper – Assign IP Address on switch

    Fxp0: management interface  Cli Configure To configure a management  port by CLI commands.    Use the command “family inet address” to configure a management IP address on the interface.   set interfaces…

  • Juniper -Factory Default Setting

    Juniper cihazlarda tek tek configurasyon silmekle uğraşmak yerine iki satır kodla işleminizi gerçekleştirebilirsiniz. CLI üzerinde load factory-default komutunu kullanarak ayarlarınızı sıfırlayabilirsiniz fakat bu komut sonrasinda sistem size commit izni vermeyecektir nedeni ise…

  • Juniper Devices Session TIMEOUT

    Aktif network ekipmanlarında network yöneticilerin en çok göz ardı ettiği ve aslında güvenlik unsurlarından biri olarak göze çarpan durumlardan biriside console ile cihaza bağlanıldıktan sonra logout yapılmamasıdır. Bu tarz durumları önlemek için…