Cisco Systems 8540 CSR, 8510 CSR Monitoring Vlan Operation, About Packet over Sonet Catalyst

Chapter 4 Configuring Interfaces

Monitoring VLAN Operation

Example

The following example shows how to configure the bridging between native and non-native 802.1Q VLANs shown in Figure 4-3:

Router(config)# interface fastethernet 1/0/1.1

Router(config-subif)# encap dot1q 1 native

Router(config-subif)# bridge-group 1

Router(config-subif)#interface fastethernet 1/0/0

Router(config-if)# bridge-group 1

Router(config-if)# exit

Router(config)# bridge 1 protocol ieee

Router(config)# interface fastethernet 1/0/1.2

Router(config-subif)# encap dot1q 100

Router(config-subif)# bridge-group 2

Router(config-subif)#interface fastethernet 3/0/1

Router(config-subif)# bridge-group 2

Router(config-subif)# exit

Router(config)# bridge 2 protocol ieee

Router(config)# exit

Router# copy system:running-config nvram:startup-config

Monitoring VLAN Operation

Once the VLANs are configured on the switch router, you can monitor their operation using the following commands:

Command	Purpose
show vlan vlan-id	Displays information on all configured VLANs or on a specific
	VLAN (by VLAN ID number).
clear vlan vlan-id	Clears the counters for all VLANs, when the VLAN ID is not
	specified.
debug vlan packet	Displays contents of the packets sent to and exiting from the route
	processor.

To configure encapsulation over the EtherChannel, see the “About Encapsulation over EtherChannel” section on page 7-6.

About Packet over SONET (Catalyst 8540)

Synchronous Optical Network (SONET) is an octet-synchronous multiplex scheme that defines a family of standard rates and formats. Optical specifications are defined for single-mode fiber and multimode fiber. The transmission rates are integral multiples of 51.840 Mbps. For example, the POS OC-12c uplink interface provides 622.080 Mbps over single-mode optical fiber.

POS provides for the serial transmission of data over SONET frames using either High-Level Data Link Control (HDLC) protocol (the default) or Point-to-Point Protocol (PPP) encapsulation. On serial interfaces, Cisco’s implementation provides error detection and synchronous framing functions of traditional HDLC without the windowing or retransmission that are found in traditional HDLC.

	Layer 3 Switching Software Feature and Configuration Guide
4-12	78-6235-04, Cisco IOS Release 12.0(10)W5(18)