8/31/2017 0 Comments Install Ip Protocol 47Snort is a free lightweight network intrusion detection system for both UNIX and Windows. In this article, let us review how to install snort from source. Guide: Installing Oracle Enterprise Manager 10g Grid Control Rel 5 on Oracle Database 11g and Linux by Mike Revitt. Now we've done it! Install any VPN service on Amazon Fire TV to enjoy all the content available on it without being blocked by geo-fencing. This works! Introduction. One of the intriguing aspects of Cisco routers, especially for those new to routing, is how the router chooses which route is the best among those. Enhanced Interior Gateway Routing Protocol (EIGRP) is an interior gateway protocol suited for many different topologies and media. In a well designed. Then click Continue. Licensing – VPX Mac Address. To license a NetScaler VPX appliance, you will need its MAC address. Go to the Configuration tab. About this Book This manual, the vShield Installation and Upgrade Guide, describes how to install and configure the VMware®vShield IP address lookup, location, proxy detection, email tracing, IP hiding tips, blacklist check, speed test, and forums. Find, get, and show my IP address. Enhanced Interior Gateway Routing Protocol. Introduction. Enhanced Interior Gateway Routing Protocol (EIGRP) is an interior gateway protocol suited for many different topologies and media. In a well designed network, EIGRP scales well and provides extremely quick convergence times with minimal network traffic. EIGRP Theory of Operation. Some of the many advantages of EIGRP are: very low usage of network resources during normal operation; only hello packets are transmitted on a stable networkwhen a change occurs, only routing table changes are propagated, not the entire routing table; this reduces the load the routing protocol itself places on the networkrapid convergence times for changes in the network topology (in some situations convergence can be almost instantaneous)EIGRP is an enhanced distance vector protocol, relying on the Diffused Update Algorithm (DUAL) to calculate the shortest path to a destination within a network. Major Revisions of the Protocol. There are two major revisions of EIGRP, versions 0 and 1. Cisco IOS versions earlier than 1. EIGRP; some explanations in this paper may not apply to that earlier version. We highly recommend using the later version of EIGRP, as it includes many performance and stability enhancements. Basic Theory. A typical distance vector protocol saves the following information when computing the best path to a destination: the distance (total metric or distance, such as hop count) and the vector (the next hop). For instance, all the routers in the network in Figure 1 are running Routing Information Protocol (RIP). Router Two chooses the path to Network A by examining the hop count through each available path. Since the path through Router Three is three hops, and the path through Router One is two hops, Router Two chooses the path through One and discards the information it learned through Three. If the path between Router One and Network A goes down, Router Two loses all connectivity with this destination until it times out the route of its routing table (three update periods, or 9. Router Three re- advertises the route (which occurs every 3. RIP). Not including any hold- down time, it will take between 9. Router Two to switch the path from Router One to Router Three. EIGRP, instead of counting on full periodic updates to re- converge, builds a topology table from each of its neighbor's advertisements (rather than discarding the data), and converges by either looking for a likely loop- free route in the topology table, or, if it knows of no other route, by querying its neighbors. Router Two saves the information it received from both Routers One and Three. It chooses the path through One as its best path (the successor) and the path through Three as a loop- free path (a feasible successor). When the path through Router One becomes unavailable, Router Two examines its topology table and, finding a feasible successor, begins using the path through Three immediately. From this brief explanation, it is apparent that EIGRP must provide: a system where it sends only the updates needed at a given time; this is accomplished through neighbor discovery and maintenancea way of determining which paths a router has learned are loop- freea process to clear bad routes from the topology tables of all routers on the networka process for querying neighbors to find paths to lost destinations. We will cover each of these requirements in turn. Neighbor Discovery and Maintenance. To distribute routing information throughout a network, EIGRP uses non- periodic incremental routing updates. That is, EIGRP only sends routing updates about paths that have changed when those paths change. The basic problem with sending only routing updates is that you may not know when a path through a neighboring router is no longer available. You can not time out routes, expecting to receive a new routing table from your neighbors. EIGRP relies on neighbor relationships to reliably propagate routing table changes throughout the network; two routers become neighbors when they see each other's hello packets on a common network. EIGRP sends hello packets every 5 seconds on high bandwidth links and every 6. Ethernet, Token Ring, and FDDIpoint- to- point serial links, such as PPP or HDLC leased circuits, Frame Relay point- to- point subinterfaces, and ATM point- to- point subinterfacehigh bandwidth (greater than T1) multipoint circuits, such as ISDN PRI and Frame Relay. T1 bandwidth or slower, such as Frame Relay multipoint interfaces, ATM multipoint interfaces, ATM switched virtual circuits, and ISDN BRIs. The rate at which EIGRP sends hello packets is called the hello interval, and you can adjust it per interface with the ip hello- interval eigrp command. The hold time is the amount of time that a router will consider a neighbor alive without receiving a hello packet. The hold time is typically three times the hello interval, by default, 1. You can adjust the hold time with the ip hold- time eigrp command. Note that if you change the hello interval, the hold time is not automatically adjusted to account for this change - you must manually adjust the hold time to reflect the configured hello interval. It is possible for two routers to become EIGRP neighbors even though the hello and hold timers do not match. The hold time is included in the hello packets so each neighbor should stay alive even though the hello interval and hold timers do not match. While there is no direct way of determining what the hello interval is on a router, you can infer it from the output of show ip eigrp neighbors on the neighboring router. If you have the output of a show ip eigrp neighbors command from your Cisco device, you can use Cisco CLI Analyzer (registered customers only) to display potential issues and fixes. To use Cisco CLI Analyzer, you must have Java. Script enabled. router# show ip eigrp neighbors. IP- EIGRP neighbors for process 1. H Address Interface Hold Uptime SRTT RTO Q Seq Type. Cnt Num. 1 1. 0. Et. 1 1. 3 1. S0 1. 74 1. 2: 0. IP- EIGRP neighbors for process 1. H Address Interface Hold Uptime SRTT RTO Q Seq Type. Cnt Num. 1 1. 0. Et. 1 1. 2 1. S0 1. 73 1. 2: 0. IP- EIGRP neighbors for process 1. H Address Interface Hold Uptime SRTT RTO Q Seq Type. Cnt Num. 1 1. 0. Et. 1 1. 1 1. S0 1. 72 1. 2: 0. The value in the Hold column of the command output should never exceed the hold time, and should never be less than the hold time minus the hello interval (unless, of course, you are losing hello packets). If the Hold column usually ranges between 1. If the Hold column usually has a wider range - between 1. If the numbers do not seem to fit one of the default timer settings, check the interface in question on the neighboring router - the hello and hold timers may have been configured manually. Note: EIGRP does not build peer relationships over secondary addresses. All EIGRP traffic is sourced from the primary address of the interface. When configuring EIGRP over a multi- access Frame Relay network (point- to- multipoint, and so on), configure the broadcast keyword in the frame- relay map statements. Without the broadcast keyword the adjacencies would not establish between two EIGRP routers. Refer to Configuring and Troubleshooting Frame Relay for more information. There are no limitations on the number of neighbors that EIGRP can support. The actual number of supported neighbors depends on the capability of the device, such as: memory capacityprocessing poweramount of exchanged information, such as the number of routes senttopology complexitynetwork stability. Building the Topology Table. Now that these routers are talking to each other, what are they talking about? Their topology tables, of course! EIGRP, unlike RIP and IGRP, does not rely on the routing (or forwarding) table in the router to hold all of the information it needs to operate. Instead, it builds a second table, the topology table, from which it installs routes in the routing table. Note: As of Cisco IOS versions 1. Installing Oracle Database 1. Release 2 on Linux x. DBA: Linux by John Smiley Learn the basics of installing Oracle Database 1. Release 2 on Red Hat Enterprise Linux or Novell SUSE Enterprise Linux, from the bare metal up (for evaluation purposes only). It starts with the basics and walks you through an installation of Oracle Database 1. Release 2 from the bare metal up. This guide will take the approach of offering the easiest paths, with the fewest number of steps for accomplishing a task. To use that method instead of the one described here, refer to this Novell- supplied install guide. The instructions assume a fresh install of Linux (as opposed to an upgrade), that the server will be dedicated to Oracle, and that no other operating systems or data are on the server. RHEL4. Oracle Database 1. Release 2 is certified to run the base release of RHEL4 (Advanced Server and Enterprise Server) without updates. If you have update CDs, you can use the boot CD from the update instead of the boot CD from the base release to automatically apply all updates during the installation. All updates from Red Hat are supported by Oracle. The easiest and fastest way to apply the updates for a fresh install of Linux is to perform the install by using the update CDs. If Linux is already installed or you don't have the updates on CDs, they can be applied through RHN. Because this guide is designed for a fresh Linux install, you'll use the update CDs. Boot the server using the first CD. If you are unsure how to proceed, stop and get help, or you will risk losing data!)This guide uses the following partitioning scheme, with ext. The 9. GB disk on the first controller (/dev/sda) will hold all Linux and Oracle software and contains the following partitions: - 1. MB /boot partition - 1,5. MB swap partition—Set this to at least twice the amount of RAM in the system but to no more than 2. GB. This approach is purely to simplify installation for the purposes of this guide. A more robust partitioning scheme would separate these directories onto separate filesystems. Boot Loader Configuration Network Configuration It is usually best to configure database servers with a static IP address. To do so, click on Edit . A pop- up window appears. Uncheck the Configure using DHCP box, and enter the IP Address and Netmask for the server. Be sure that Activate on boot is checked, and click on OK . In the Hostname box, select manually and enter the hostname. In the Miscellaneous Settings box, enter the remaining network settings. Firewall Configuration For the purposes of this walk- through, no firewall is configured. Select No firewall. Select Disabled on the . Click on Proceed when the . Setting the system clock to UTC is usually a good practice for servers. To do so, click on System clock uses UTC. Set Root Password Enter a password for root, and enter it again to confirm. Package Installation Defaults Select Customize software packages to be installed. Package Group Selection Select only the package sets shown here and leave all others unselected. Desktop. Applications. Graphical Internet (optional)Servers. Do not select anything in this group. Development. System. Administration Tools. System Tools. Add the package 'sysstat' by clicking on the Details link and selecting . Change disks as prompted. Congratulations Remove the installation media from the system, and click on Reboot . The system automatically reboots and presents a new welcome screen. If you agree to the terms, select Yes, I agree to the License Agreement and click on Next. Date and Time Set the Date and Time. If you want to use an NTP server (recommended), select Enable Network Time Protocol and enter the name of the NTP server. Display Accept the defaults or change as required. Red Hat Login. Enter your Red Hat Network login and password or create a new one. System User. Create an account for yourself. Do not create an account for oracle at this time. Creating the oracle account is covered later in this section. Additional CDs. Finish Setup. A graphical login screen appears. Congratulations! Your RHEL4 software is now installed. Verifying Your Installation. Required kernel version: 2. EL This kernel, or any of the kernels supplied in updates, works with Oracle Database 1. Release 2 . Check your kernel version by running the following command. Once you've completed the steps above, all of the packages required for Oracle Database 1. Release 2 will have been installed. Required package versions (or later): binutils- 2. EL4compat- db- 4. EL4gcc- c++- 3. 4. EL4glibc- 2. 3. 4- 2glibc- common- 2. EL4libstdc++- devel- 3. EL4make- 3. 8. 0- 5pdksh- 5. RHEL4. 2 (Required only to install Oracle demos. Service Packs and package updates are available from Novell, either on CDs or online via its support portal. In this guide, we will install on the SLES9 base release. Boot the server, using the SLES9 CD. If you are unsure how to proceed, stop and get help, or you will risk losing data!)This guide uses the following partitioning scheme, with ext. The 9. GB disk on the first controller (/dev/sda) will hold all Linux and Oracle software and contains the following partitions: - 1. MB /boot partition - 1,5. MB swap partition—Set this to at least twice the amount of RAM in the system but to no more than 2. GB. This approach is purely to simplify installation for the purposes of this guide. A more robust partitioning scheme would separate these directories onto separate filesystems. Software Click on the link for Software. The Software Selection screen appears. Click on Detailed Selection. The left- hand window displays a list of software selections. Click on the box next to each selection to select/deselect it. Select the following software (this is the recommended set; all others should be deselected): - Basis Runtime System - Ya. ST - Linux Tools - Help & Support Documentation - Graphical Base System - GNOME System - C/C++ Compiler and Tools - Analyzing Tools. It is recommended that the following items not be installed, as they may conflict with Oracle products providing the same service: - Simple Webserver - Authentication Server (NIS, LDAP, Kerberos)Time Zone Click on Accept. A warning box appears. Click on Yes, install when ready to proceed. Change CDs as prompted by the installer. Confirm Hardware Detection Network Cards – Click on OK. Password for . Select No, Skip This Test. Service Configuration There is no need to configure CA Management or Open. LDAP Server. Select Skip Configuration. User Authentication Method Select Local(/etc/passwd). Add a New Local User Create an account for yourself. Do not create the oracle account at this time; we'll do that later. Release Notes. Hardware Configuration Confirm Hardware Detection – Graphics Cards – click on Continue. There is no need to configure sound cards for a database – click on Skip.
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