Community
- Command Central
- MVP Program
- Monthly Mission
- Blogs
- Groups
- Events
- Media Vault
Products
- Observability
- Network Management
- Application Management
- IT Security
- IT Service Management
- System Management
- Database Management
Content Exchange
- SolarWinds Platform
- Server & Application Monitor
- Database Performance Analyzer
- Server Configuration Monitor
- Network Performance Monitor
- Network Configuration Manager
- SQL Sentry
- Web Help Desk
Free Tools & Trials
Store

Not getting bridge tables for Layer 2 switches

I have some Layer 2 switches that are SNMP enabled. I would expect an NTM scan to provide the Mac Address table data for these switches but I am not seeing it. I did not check "don't use Bridge Table information". How can I see this information? Thanks for any help with this.

The inventory report and node info from Map area attached.

attachments.zip

Find more posts tagged with

SNMP

bridge_tables

mac_addresses_per_port

Accepted answers

All comments

cliton1981

Dave, check out the ARP table display in your node detail page. It should show your the corresponding MAC Address to the IP Address

FormerMember

What I'm trying to get is a list of devices (MAC addresses) connecting to each switch port. I'm pretty sure that the IOS 12.2 in the 3750E switches I'm scanning does not support the BRIDGE-MIB.

Update: The Cisco switches provide Bridge tables per VLAN in the Bridge MIB. "@VLAN" must be appended to the SNMP community string. When I did this for the VLAN the ports were on, I got the MAC/Port info.

See Note below from: Catalyst 3750-X and 3560-X Switch Software Configuration Guide, Release 12.2(55)SE - Supported MIBs [Cisco Catalyst 3750-X Series Switches] - Cisco Systems

The BRIDGE-MIB supports the context of a single VLAN. By default, SNMP messages using the configured community string always provide information for VLAN 1. To obtain the BRIDGE-MIB information for other VLANs, for example VLAN nn.

cliton1981

Dave, can we hope on a call and discuss this further ? Please email me your preferred time and date. cliton.godinho@solarwinds.com