1. 创建vlan 10 2. interface vlan 10 3. ip add access:接终端(1个vlan) trunk:承接vlan 当一条链路,需要承载多条VLAN信息的时候,需要使用trunk来实现 一般见于交换机之间或交换机与路由器之间 Trunk的配置 配置Trunk封装方式 interface f0/15 switchport trunk encapsulation {isl|dot1q} 开启端口trunk模式 s...
Layer 3 switches can perform on the OSI model’s Layer 2 and Layer 3. The Layer 3 switching functionality can take either of two forms: Cut-through switches –will only look into the first packet of a series of packets to determine its logical Layer 3 destination IP address and then shif...
i have configure the vlan between layer 3 switches i created vlan 10 and vlan 20 on my switches, the funny thing is that i can ping vlan 10 pc and int vlan ip and vlan 20 int vlan but not vlan 20 pc switch 1 pc vlan 10| 10.1.1.100 pc vlan 20 | 10.1.2.100, the int vlan 2...
这里面的layer1 layer2指的应该是一层和二层,物理层和链路层.一般的,layer是指图层, 那就是图层1,图层2了.
I know layer 3 switches have the SVI feature, which allow us to assign an IP address to a VLAN interface. How about layer 2 switches and layer 3 routers? Do they have SVI? Correct me if I'm wrong, I don't think Cisco make pure layer 2 switches or layer 3 any more. So this qu...
【CCNA】4.OSI Layer3 网络层,Mac编址存在的问题在之前的博客中提到,2层数据链路层中,我们是通过mac地址来进行编址的。而这中方式会有如下三个问题:1.所有的设备处在同一个广域网中(这样信息就不安全)2.设备定位查找麻烦3.难以对设备进行区分...
Layer 2 Security for CCNA Security (210-260) IINS This course is a part of the CCNA Security Exam series and builds a CCNA Security candidate's knowledge of Layer 2 security. Get the knowledge you need to prepare you for the exam. ...
首先确定向主机位借出多少比特位才够 30 个子网, 发现 2 的 5 次方 -2=30 ,那么就确定了需要向主机位借出 5个比特位,新的子网掩码就是 255.255.255.248 ,每个子网的主机数 2的3(8-5)次方 -2=6 ,有效子网间隔 256-248=8 那么 192.168.1.8 就是有效地子网间隔。
Solved: hi people , i have a query about exchanging vlan information between two layer three switches , so in packet tracer i have connected two layer 3 switches, they have their own vlans configured . each switch's vlans are able to ping each other
Similar to routers, switches are subject to attack from malicious internal users. The switch Cisco IOS software provides many security features that are specific to switch functions and protocols. In this lab, you configure SSH access and Layer 2 security for switches S1 and S2. You also ...