Cisco WS-X6416-GE-MT - Interface Module - Expansion Instrukcja Użytkownika Pobierz pdf (Strona 16)

White Paper

CatOS> (enable) show interface

sl0: flags=51<UP,POINTOPOINT,RUNNING>

slip 0.0.0.0 dest 0.0.0.0

sc0: flags=63<UP,BROADCAST,RUNNING>

vlan 1 inet 10.1.1.54 netmask 255.255.255.0 broadcast

10.1.1.255

In Cisco IOS Software, the concept of sc0/sc1 interface does not exist; network-based switch

management is now accomplished with the use of switch virtual interfaces (SVIs), which are

discussed further in the following section. For every Layer 2 VLAN that is created, there can also

be a corresponding SVI. Each SVI can have one or more IP addresses, which are used for

accessing the device on the particular VLAN using an SNMP or telnet client. The following

command displays the VLAN SVIs and the associated IP addressing for managing the system.

IOS#show ip interface brief

Interface IP-Address OK? Method Status Protocol

Vlan1 192.168.1.1 YES manual up up

Vlan10 10.1.1.1 YES manual up down

Switch Configuration: Making Changes

Configuration changes in the Cisco Catalyst OS software are written to NVRAM immediately after

a change is made; no intervention by the user is required. All configurations in the Cisco Catalyst

OS are done using a “set” command sequence, implemented from the enabled-mode prompt. The

clear command from the same prompt will erase a particular command.

In contrast, Cisco IOS Software does not save configuration changes to NVRAM unless the copy

run start (or write memory) command is executed. If the configuration is not explicitly saved, any

changes to the configuration will be lost if the system is reloaded. All command line configuration

in Cisco IOS Software (whether on the supervisor or the MSFC) is done from the configuration

mode, commonly known as “config-t”. Commands can be removed with the no form of the original

command.

Port Behavior

The following section details the differences in port behavior between the Cisco Catalyst OS and

Cisco IOS Software.

Hybrid Behavior: Cisco Catalyst OS with Cisco IOS Software on the MSFC

The hybrid model offers a very tight integration of the Layer 2/4 Cisco Catalyst OS features with

the Layer 3 Cisco IOS Software on the MSFC feature set. Layer 2 ports (such as access and trunk

ports) and VLANs are configured with the Cisco Catalyst OS command set, and Layer 3 SVIs are

configured with the MSFC Cisco IOS Software command set. Ports are configured in Layer 2

VLANs with Cisco Catalyst OS (set vlan x <slot/port>), thus corresponding Layer 3 SVIs must be

created to enable inter-VLAN routing for the particular VLANs. You create SVIs using the interface

vlan command. In the hybrid model, the MSFC operates on these logical interfaces (interface vlan

10) rather than on physical interfaces (interface gig 1/1). Figure 6 illustrates these concepts and

the associated commands to use Layer 2 and/or Layer 3 functionality.

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 50 51

Brak uwag

Cisco WS-X6416-GE-MT - Interface Module - Expansion Instrukcja Użytkownika Strona 16