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This chapter describes the Enterprise Edition software features for Catalyst 2820 and Catalyst 1900 switches. It also describes the feature default settings and shows the management console main menu used to configure and manage your network.
For detailed descriptions of the hardware and baseline software features, refer to the
Catalyst 2820 Series Installation and Configuration Guide and the Catalyst 1900
Series Installation and Configuration Guide.
The Catalyst 2820 and Catalyst 1900 switches are designed for Ethernet workgroups and individual users requiring 100-Mbps connectivity to servers and backbones. Catalyst 2820 and Catalyst 1900 switches use shielded twisted-pair, unshielded twisted-pair (UTP), or fiber-optic cable. Table 1-1 and Table 1-2 describe the Catalyst 2820 and Catalyst 1900 switch models.
| Part Number | Description | Number of Addresses | Number of Ports | Number of Module Slots |
|---|---|---|---|---|
| WS-C2822-EN
WS-C2822-A | Modular with 24 switched 10BaseT ports and 1 AUI port | 2048 | 25 | 2 |
| WS-C2828-EN
WS-C2828-A | Modular with 24 switched 10BaseT ports and 1 AUI port | 8192 | 25 | 2 |
| Part Number | Description | Number of Addresses | Number of Ports |
|---|---|---|---|
| WS-C1924-EN WS-C1924-A | 24 10BaseT ports, 1 AUI port, and 2 100BaseTX ports | 1024 | 27 |
| WS-C1924C-EN WS-C1924C-A | 24 10BaseT ports, 1 AUI port, 1 100BaseTX port, and 1 100BaseFX port | 1024 | 27 |
| WS-C1912-EN WS-C1912-A | 12 10BaseT ports, 1 AUI port, and 2 100BaseTX ports | 1024 | 15 |
| WS-C1912C-EN WS-C1912C-A | 12 10BaseT ports, 1 AUI port, 1 100BaseTX port, and 1 100BaseFX port | 1024 | 15 |
Catalyst 2820 and Catalyst 1900 software features include these components:
The VLAN feature consists of the following components:
| VLAN Trunks | Allow you to extend VLANs from one Catalyst 2820 or Catalyst 1900 switch to routers and switches that are VLAN-capable. The Catalyst 2820 and Catalyst 1900 switches support a maximum of two trunks. The Catalyst 1900 switch supports a maximum of two Fast Ethernet Inter-Switch Link (ISL) trunks. The Catalyst 2820 switch supports both ISL and Asynchronous Transfer Mode (ATM) LAN emulation (LANE) trunk connections. |
| Load Sharing
| Allows parallel trunks to split traffic on a VLAN-by-VLAN basis between multiple trunks. |
| VLAN Trunk Protocol
| Allows VLAN naming consistency and connectivity between all devices in a management domain. When new VLANs are added to a Catalyst 2820 or Catalyst 1900 switch in a management domain, the VLAN Trunk Protocol (VTP) automatically distributes the information to all the devices in the management domain. VTP advertisements are transmitted on all trunk connections, including ISL, IEEE 802.10, and ATM LANE. |
| VTP Pruning
| Enhances network bandwidth use by reducing unnecessary flooded traffic, including broadcast, multicast, and flooded unicast packets. This feature restricts flooded traffic to only those trunk links that the traffic must use to access the appropriate network devices. |
| Static Port VLAN Membership | You can assign a port to a VLAN. You need to reconfigure the switch to change the VLAN assignment to a static port. |
| Dynamic Port VLAN Membership
| Provides the flexibility to move a connection from a port on one switch to a port on another device in the network while retaining the VLAN identity of the host. You can assign dynamic ports to a VLAN based on the source MAC address of the hosts connected to that port. |
Cisco Group Management Protocol (CGMP) manages multicast traffic in Catalyst 2820 and Catalyst 1900 switches by allowing directed switching of IP multicast traffic within a network. IP multicast packets are forwarded only to ports with a host configured to receive each multicast address. As a result, ports on hosts whose users are not interested in receiving IP multicast traffic are not flooded with unnecessary traffic.
Remote Monitoring (RMON) allows various network monitors and console systems to exchange network monitoring data.
Table 1-3 shows the default values for Enterprise Edition software features and the menus you access to reconfigure them.
| Feature | Default Setting | Management Console Menu |
|---|---|---|
| VLANs | VLAN 1 is the default Ethernet VLAN. All ports are nontrunk, static ports and belong to VLAN 1. | Virtual LAN |
| CGMP | Enabled | Network Management |
| RMON | Enabled
Default rows set up for ports A and B in the statistics group. Default rows set up for ports A and B in the short-term history group. Default rows set up for ports A and B in the long-term history group. | Not displayed |
The management console is a menu-driven system using the following conventions:
You will work mostly with options N and V to configure the Enterprise Edition software. When configuring modules, you will also use option P.
The Catalyst 2820 and Catalyst 1900 switches support the following Management Information Bases (MIBs):
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