cisco 3550 gbic

layer-3 refined QoS features to ensure classification and sorting of network traffic and to avoid congestion in the best way. Before a packet enters the shared buffer, the Catalyst 3550 smart Ethernet switch can classify, reclassify, and process the incoming packet according to the policy (determine whether the packet flow is from the intended user or not, and take action on the package. Packet Classification allows network devices to differentiate t

This article describes how to configure a vswitch for a CISCO 3550 router and how to configure access control for a MAC address. In network management, users often encounter this situation: some users violate management regulations and modify their own IP addresses without permission to access restricted resources. Such behavior not only undermines information security rules, but may also cause network comm

Today there are user Cisco 3850 Insert multimode Gigabit module after error log as follows:*oct 13:48:54:%platform_pm-6-module_errdisable:the inserted SFP MODULE with interface name GI1/0/18 was not suppor Ted*OCT 13:48:54:%pm-4-err_disable:gbic-invalid error detected on GI1/0/18, putting GI1/0/18 in err-disable state*oct 13:48:56:%LINK-3-UPDOWN:INTERFACEGIGABITETHERNET1/0/18, changed state-to-downCisco official website to view the document after proc

For details about how to configure DHCP for a CISCO 3550 switch, refer to some configuration content in this article for comparison and learning. After "ip helper-address dhcp server ADDRESS" according to the configuration described on the Internet, the project finds that the client cannot obtain the ip address from the DHCP server, I recently configured 3550 as

#十二步 Save ConfigurationDestination filename [startup-config]?Building configuration ...[OK]switch#-=--------Switch#reload#重新启动-----------Press RETURN to get started!00:00:14:%spantree-5-extended_sysid:extended sysid enabled for type VLAN00:00:17:%sys-5-config_i:configured from memory by console00:00:17:%sys-5-restart:system restarted--Cisco Internetwork Operating System SoftwareIOS (tm) C2950 software (c2950-i6q4l2-m), Version 12.1 (9) EA1, RELEASE So

In Cisco 3550, dhcp configuration is often discussed on the network, but there are mostly errors and omissions. According to the configuration described on the internet, after "ip helper-address dhcp server ADDRESS, in the project, I found that the client could not obtain the IP address from the DHCP server. I recently configured 3550 as the DHCP server relay pro

Lab Environment:1. Configure two VLAN 10 and VLAN 20VLAN IP address settings: 192.168.10.1 255.255.255.0 (192.168.10.1 is a VLAN 10 gateway address)VLAN IP Address setting: 192.168.20.1 255.255.255.0 (192.168.20.1 is a VLAN 20 gateway address)2. (Windows Server R2 operating system) set up a DHCP server to create two scopes VLAN 10 and VLAN 20,Get the IP address dynamically using VLAN 10 and VLAN 20. The DHCP server NIC accesses the switch FA0/1 port.DHCP server network card settings:ip:192.168.1

Cisco 3550 switch stp learning notes STP (Spanning Tree Protocol) (IEEE 802.1D) Spanning Tree Protocol-review the working principles of SW: 1. the frame it forwards cannot be modified. create a MAC-PORT ing table based on source MAC learning. forward the frames in the target MAC ing table directly from the corresponding port. for frames without target MAC ing/Target wide (Group) broadcasting, SW learns diff

For complete syntax and application information about this chapter, seeCatalyst 3550 Multilayer Switch Command ReferenceAnd Cisco IOS Interface Command Reference For Release 12.1. Understanding Interface Types This section describes different interface types and some reference content for configuring these interfaces in detail in other sections. Other sections describe the configuration process of physi