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！！ Using the Telnetlib Library1 topologiesR4, R5 are not routed to 1.1.1.1 and 2.2.2.2 when the script is not running:The configuration document is placed in the same directory as the Python script:After running the Python script:-process=image/watermark,size_16,text_qduxq1rp5y2a5a6i,color_ffffff,t_100,g_se,x_10,y_10,shadow_90,type_ zmfuz3pozw5nagvpdgk= "alt=" Python configures Cisco network devices via Telnet/>Success!#conf.py 文件import timefrom telne
The following three options are available in Cisco, and Scenario 1 and Scenario 2 implement the same functionality, which is to bind a specific host's MAC address (the NIC hardware address) on the specific switch port. Scenario 3 is the MAC address (NIC hardware address) and IP address of the specific host that is bound on the specific switch port.1. Protocol Port-based MAC address bindingFor example, the Cisco
Generally in the device by default Cisco and ZTE three-tier devices are connected via the OSPF protocol, and packets below 500 can be ping-through, but once more than 500, packets will be dropped. This is because the Cisco device defaults to packet fragmentation when the PPP is encapsulated, and ZTE devices do not support Shard reassembly, so the acceptance data cannot be matched. However, if the MTU is red
Ws-x4148-fe-bd-lc:cisco Catalyst 4500 Fast Ethernet switching module, 48 port 100base-bx-d SMF (LC) Ws-x4124-fx-mt:cisco Catalyst 4000 Fast Ethernet switching module, 24 port 100base-fx (MT-RJ) Ws-x4148-fx-mt:cisco Catalyst 4500 Fast Ethernet switching module, 48-Port 100BASE-FX multimode fiber (MMF) Ws-x4124-rj45:cisco Catalyst 4500 10/100 module, 24 port (RJ-45) Ws-x4148-rj:cisco Catalyst 4500 10/100 module, 48 port (RJ-45) Ws-x4148-rj21:
When a Cisco router forgets or loses the enable password, there are two ways to recover, depending on which series of routers you are using. The first of these methods This approach restores the following routers: Cisco 2000 series, 2500 series, 3000 series, Cisco 4000 series using the 680x0 Motorola CPU, and 10.0 series routers running 7000 versions of
First, the Cisco router to introduce the memory A router is similar to a computer in that it also has memory, operating system, configuration, and user interface, and the operating system in Cisco routers is calledInternet Operating System (Internetwork operating system) or iOS. The following is mainly about the storage of routers. ROM: Read-only memory contains a copy of the iOS being used by the router;
Cisco single-ARM routing configuration One-arm routing, which is to set up multiple logical subinterfaces on the router, one VLAN for each sub-interface. The data on each sub-interface is passed on the physical link to be labeled encapsulated. Cisco devices support ISL and 802.1q (dot1q) protocols. Huawei only supports 802.1q. The difference between dot1q and ISL: dot1q is a generic VLAN protocol model for
Today's recommendation: cisco switch module Ethernet application details, familiar with the following cisco switch module knowledge point, you only need to spend a few minutes to understand the cisco switch Module Settings. There is also a diagram below, and other related information will be mentioned in this article. As an important
This article mainly introduces how to quickly configure the Cisco Router Network Assistant and provides specific operation steps. I believe this article will benefit you a lot after reading it. Cisco provides Cisco Network Assistant CNA, a free tool for small and medium-sized enterprise SMBs, to help you configure Cisco
Some time ago, my colleague asked me a question about the DHCP configuration of the Cisco router. At that time, I did not give a positive answer, because this was my first time. In the following days, I have consulted relevant materials and are satisfied with the following answers. Share it with you now! In addition, most people do not know about the computer and do not operate these operations. Therefore, the customer asked us to allow any computer t
In the network industry, Cisco System Inc. is unknown. With its IOS (Internet Operating System), Cisco is an absolute leader in the multi-protocol router market. Currently, nearly 80% of routers on the Internet come from Cisco. In fact, Cisco also has a full range of network devices, including hubs, switches, access se
There are many users of Cisco routers. Here we mainly introduce how to keep Cisco routers away from DoS attacks. DoS Dictionary Attacks against routers allow attackers to gain access to Cisco routers or prevent users from using the routers. In this article, you can find out how to use the enhanced login function of the Cisco
With the development of China's routing industry, its market demand is also increasing. As a leader in the routing industry, Cisco routers have a very high market share. Telnet to the Cisco router for remote management is the choice of many network management, but the data transmitted through Telnet is in plain text, so this login method has a great security risk. 1. Security Testing I installed sniffer loc
CCNA Study Notes (ii)--Initial knowledge of Cisco devicesIn the previous chapter we recognized the fundamentals of networking, and now we are formally exposed to Cisco devices.1, first we first understand the main components of a Cisco device:ROM (read-only memory): mainly save the post software, save the router boot boot program.RAM (random memory): loss of data
Fast Ethernet and Gigabit Ethernet line cards The Cisco Catalyst 4500 series scalable, modular, and high-density switches provide superior combined second-layer switching and intelligent services, which enable network control and sustainability. These switches provide a wide range of Fast Ethernet and Gigabit Ethernet line cards, including the desktop, branch backbone and servers for enterprise and commercial Exchange solutions, and the fiber and cop
There are many users who use Cisco routers, and there are also many problems. Password forgetting or loss is a common problem for users. So I studied the two methods for restoring the Cisco Router password, I would like to share it with you here and hope it will be useful to you. When a Cisco router forgets or loses the enable password, there are two methods to r
Clear License agent:to Clear License Agent statistics counters or connection statistics (in privileged EXEC mode)Debug license:to Enable controlled Cisco IOS software license debugging activity on a device (in privileged EXEC mode)No debug licenseLicense Accept end User Agreement:to accept the End-User License Agreement (EULA) for all Cisco IOS software and features At one time (in global configuration mode
Release date: 2011-10-20Updated on: 2011-10-20 Affected Systems:Cisco Show and Share 5.2 (2)Cisco Show and Share 5.2 (1)Cisco Show and Share 5 (2)Unaffected system:Cisco Show and Share 5.2 (2.1)Description:--------------------------------------------------------------------------------Cve id: CVE-2011-2584 Cisco Show and Share is a network broadcast and video sha
Release date:Updated on: Affected Systems:Cisco IOS 15.xUnaffected system:Cisco IOS 15.2 (3) TCisco IOS 15.2 (3) TCisco IOS 15.2 (2) T1Cisco IOS 15.2 (1) T2Cisco IOS 15.2 (1) GC2Cisco IOS 15.1 (4) M4Cisco IOS 15.1 (4) M4Cisco IOS 15.1 (4) M3aCisco IOS 15.1 (4) M3Cisco IOS 15.1 (3) T3Cisco IOS 15.1 (3) T3Cisco IOS 15.1 (3) S2Cisco IOS 15.1 (2) GC2Cisco IOS 15.1 (2) GC2Cisco IOS 15.1 (2) EY2Cisco IOS 15.1 (1) T5Cisco IOS 15.0SGCisco IOS 15.0SECisco IOS 15.0SECisco IOS 15.0SACisco IOS 15.0MRACisco
Cisco uniied MeetingPlace unauthorized password change Vulnerability (CVE-2015-4262)Cisco uniied MeetingPlace unauthorized password change Vulnerability (CVE-2015-4262) Release date:Updated on:Affected Systems: Cisco uniied MeetingPlace Web Conferencing Description: CVE (CAN) ID: CVE-2015-4262The Cisco Unified Me
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