gre lessons

not have the opportunity to re-think, but it is not a pity, it can be said to deserve, Because the online test has already appeared in the time of this problem, alive did not solve, must be self-righteous think that the problem of the environment, must be considered to be a problem of the machine, and never think of it is not their own problems, so many long-winded, a little disciplining feeling, want to wall the feeling. If the problem is not solved, you have no experience, you will not grow,

Blood lessons --- ogg must use the latest version, and blood lessons --- ogg must useThis cocould be a Bug 19517566-ie extract abend with OGG-01161 bad column index relating to the extract where the extract was still resolving the old metadata and having the excluded column as a part of the key column. I have tried this is on my machine with OGG binaries on 11.2.1.0.27 and did the same steps which you have

1,gre, the Generic Routing Encapsulation Protocol, the GRE tunnel is a ip-over-ip tunnel that establishes a virtual point-to-point connection, encapsulates the datagram of some network layer protocols through the tunnel, enabling these encapsulated datagrams to be transmitted in the Ipv4/ipv6 network, in tunnel The two ends of the datagram are encapsulated and packaged separately.To create a

Sysname R1 Interface GigabitEthernet0/0/0 Ip address 202.100.1.1 255.255.255.0 Interface LoopBack0 Ip address 192.168.4.1 255.255.255.0 Interface Tunnel0/0/1 Ip address 192.168.1.1 255.255.255.0 Tunnel-protocol gre Source 202.100.1.1 // local public network address Destination 202.100.2.3 // public IP address of the Peer end Ospf 110 router-id 192.168.1.1 Area 0.0.0.0 Network 192.168.1.1 0.0.0.0 Network 192.168.4.1 0.0.0.0 Ip route-static 0.0.0.0 0.0

Summary of GPRS APN-GRE Tunnel ConfigurationThis article is a practical application case about the establishment of the APN-GRE tunnel, the configuration is based on the Cisco 12012 router, using TFTP. You can see that similar applications may be encountered in the future! Welcome to the discussion! Using 990 out of 29688 bytes ! Version 12.2: Service timestamps debug uptime Service timestamps log uptime N

Experimental environment: Here we use a Huawei s3526 switch to simulate Internet two H3C firewalls, two quidway s2403h-hi switches Two 192.168.1.0 and 192.168.2.0 network segments are connected by the two sides of Huawei's firewall respectively Achieving cheap connectivity using VPN technology To allow two LANs to communicate with each other, the GRE tunneling technique is used between two firewalls (the so-called tunnels are logical virtual) Exp

GRE over IPSEC route configuration r1 (0/0) --- r2 -- (1/1) r3 GRE over IPSEC first ipsec solves the problem that ipsec cannot transmit multicast traffic in gre, that is, you can run the Routing Protocol in ipsec, and the protocol is encrypted !! R1: crypto isakmp policy 10 hash md5 authentication pre-encryption crypto isakmp key zaq address 2.3.0.1 !! Crypto ips

In the network, how do we achieve cross-border transmission of a protocol? This requires a concept of protocol encapsulation. The GRE protocol is used to complete the job. Now let's give a detailed explanation of this important agreement. 1. GRE protocol Concept Generic Routing Encapsulation (GREGeneric Routing Encapsulation) encapsulates packets of certain network layer protocols such as IP and IPX, so tha

The first two posts examine the network architecture of the compute node and the neutron node respectively. This paper analyzes the process of specific network process through some typical process cases.0. EnvironmentWith learning OpenStack (7): Neutron in-depth learning OVS + the environment used in the Neutron node of GRE.Briefly summarize:The Compute node is responsible for the neutron-ovs-agent: Br-int: Each virtual machine is connected to the OvS Bridge via a Linux Brige Br-tun

Generic Enapsulation Tunnel is a kind of network tunneling technology, it is called General tunneling technology, it can be used to package the Ethernet, IP, MPLS and other packets in the IP packet to be forwarded in the network, there is a large-scale application.The Linux system natively supports the GRE interface with the following configuration commands:IP tunnel Add gret1 mode GRE remote 45.42.104.183

Metering_agent_install=yconfig_neutron_l2_plugin=ml2config_neutron_ml2_type_drivers=greconfig_neutron_ml2_ Tenant_network_types=greconfig_neutron_ml2_tunnel_id_ranges=100:1000config_neutron_ovs_tenant_network_type= greconfig_neutron_ovs_tunnel_ranges=100:1000config_neutron_ovs_tunnel_if=eth1config_cinder_volumes_create=n### ##### #CONFIG_LBAAS_INSTALL =yconfig_ceilometer_install=yconfig_heat_cloudwatch_install=yconfig_heat_cfn_install =yconfig_heat_install=y(6) Run configuration filePackstack--

1. PrefaceKubernetes designed a special network model that deviates from the native Docker network model. In this design, Kubernetes defines an abstract concept: pods, each pod is a collection of containers, and there is a shared IP, and all containers share the same network namespace. Pods can communicate not only with physical machines, but also between containers across the network. Kubernetes's ip-per-pod design idea has many benefits, such as: From port assignment, network, naming, service

R6 Router GRE partial configurationEnConfig TNo IP domain-lookupIP classlessIP Subnet-zeroHost R6Interface Loopback 0IP address 10.1.1.1 255.255.255.0Interface Serial 1/2IP address 173.16.1.1 255.255.255.252No shutdownint FA 2/0IP addr 11.0.0.1 255.0.0.0No shutdownInterface Tunnel 0IP unnumbered serial 1/2Tunnel Source Serial 1/2Tunnel Destination 173.16.1.2No shutExitIP Route 0.0.0.0 0.0.0.0 173.16.1.2IP Route 10.2.2.0 255.255.255.0 tunnel0EndShow IP

: * Force traffic to a specific address * hide private network address * Deliver non-IP packets on IP network * Provides data security supportTunnel Technical BenefitsTunnel protocol has many advantages, for example, in dial-up network, most users accept the dynamic IP address assigned by the ISP, while the enterprise network usually uses security measures such as firewall and NAT to protect its network, and enterprise employees can not access intranet resources through the firewall when they di

"Gre/gmat/lsat long difficult sentence 300 cases explaining scouring" is the GRE Super popular teacher Chen Qi teachers team of another new work, but also "want Your Life 3000" of the newly member, from the previous words, phrases, exercises, to the long difficult sentence level, I believe that after the completion of this book, candidates in the preparation stage will certainly be higher. In addition, the

Network node: 192.168.10.99Control node: 192.168.10.95Compute nodes: 192.168.10.101Network node: 192.168.10.99#[ml2]Crudini--set/etc/neutron/plugins/ml2/ml2_conf.ini ML2 type_drivers Flat,vlan,gre,vxlanCrudini--set/etc/neutron/plugins/ml2/ml2_conf.ini ML2 tenant_network_types VxlanCrudini--set/etc/neutron/plugins/ml2/ml2_conf.ini ML2 mechanism_drivers openvswitchCrudini--set/etc/neutron/plugins/ml2/ml2_conf.ini ML2 PATH_MTU 1550Crudini--set/etc/neutro

Description: A company's PC1 network segment 192.168.1.0/24 to and B Company PC2 Network segment 172.16.2.0/24 establish GRE tunnel communicationConfiguration ideas:1, R1 and R2 to be able to communicate--R1 and R2 respectively configure default routes to the ISP2, the new tunnel port, set the IP, the two sides to the same network segment, configure the source is the public network export IP and destination is the other public network export IP3, at t

Affected Systems: Cisco IOS 12.2 Cisco IOS 12.1 Cisco IOS 12.0 Description: Cisco Internet OS IOS) is the operating system used by Cisco devices. Cisco Systems IOS has a vulnerability in parsing GRE packets containing GRE source route information. Remote attackers may cause devices to process packets incorrectly. If a specially crafted GRE message is received,

Tutorial topology: Topology analysis:Consists of four routes. The e0/1 ports of R1 and R4 simulate pc1 and pc2R2 and R3 simulate the InternetPurpose:The two ends of the LAN can communicate with each other and can run dynamic routing protocols;Encryption of LAN traffic at both ends;LAN at both ends can access the InternetExperiment Analysis:Use IpSec to encrypt traffic at both endsIf the LAN can run the dynamic routing protocol, GRE must be run on the

1. First, load the kernel module ip_gre.o. the GRE module in the previous versions of kernal is ip_gre.o, and RHEL5 is called ip_gre.ko. Modprobe-l | grep ip_gre.ko The above command is to look at this module Insmode/lib/modules/2.4.20-8/kernel/net/ipv4/ip_gre.ko The above command loads the ip_gre.ko module. Note that you need to load it again after each restart or logout. 2. Start the GRE Tunnel Ip