Cisco Systems C819GUK9 manual BRIDGE-MIB for Layer 2 Ethernet Switching, MIBs Link, 10-4

Chapter 10 Configuring the Ethernet Switches

Overview of SNMP MIBs

sense is more accurately called a MIB module and is usually defined in a single document. In the other sense, a MIB is a collection of such branches. Such a collection might comprise, for example, all the MIB modules implemented by a given agent or the entire collection of MIB modules defined for SNMP.

A MIB is a tree where the leaves are individual items of data called objects. An object may be, for example, a counter or a protocol status. MIB objects are also sometimes called variables.

For a list of MIBs supported on Cisco 819 4G LTE routers, see the “SNMP MIBs” section of Configuring Cisco 4G LTE Wireless WAN EHWIC.

MIBs were modified in IOS release 15.2(4)M1 to support Cisco 819HGW and Cisco 819HWD SKUs. Table 10-1lists the MIBs for Cisco 819 ISRs.

Table 10-1	MIBs for Cisco 819 ISRs
MIBs		MIBs Link
CISCO-PRODUCTS-MIB		To locate and download MIBs for selected
		platforms, Cisco IOS releases, and feature sets,
CISCO-ENTITY-VENDORTYPE-OID-MIB
		use Cisco MIB Locator found at the following
OLD-CISCO-CHASSIS-MIB
		URL:
CISCO-WAN-3G-MIB		http://tools.cisco.com/ITDIT/MIBS/servlet/index

BRIDGE-MIB for Layer 2 Ethernet Switching

The Layer 2 Ethernet Switching Interface BRIDGE-MIB is supported in the Cisco 819 platforms. The BRIDGE-MIB enables the user to know the Media Access Control (MAC) addresses and spanning tree information of the Ethernet switch modules. The user can query the MIB agent using the SNMP protocol and get the details of Ethernet switch modules such as MAC addresses of each interfaces and spanning protocol information.

The Bridge-MIB uses the following approaches to get the L2 layers BRIDGE-MIB information:

•Community-string-based approach

•Context-based approach

In the community-string-based approach, one community string is created for each VLAN. Based on the query, the respective VLAN MIB is displayed.

To get the BRIDGE-MIB details, use the snmp-server community public RW command in the configuration mode.

Router(config)#snmp-server community public RW

	Cisco 819 Series Integrated Services Routers Software Configuration Guide
10-4	OL-23590-02