All MIBs › ME1200-IP-SOURCE-GUARD-MIB
Organization: Cisco Systems, Inc
Last Updated: 2014-03-28
Category: Domain: Security, Vendor: Cisco
Description: Cisco ME1200 Metro Ethernet switch MIB for IP Source Guard configuration to validate IP traffic against DHCP snooping bindings.
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What Is ME1200-IP-SOURCE-GUARD-MIB?
ME1200-IP-SOURCE-GUARD-MIB is a Cisco proprietary module for the ME1200 Metro Ethernet switch family, providing IP Source Guard configuration to validate incoming IP traffic against DHCP snooping bindings or static entries. It exposes a global mode setting, per-interface mode and dynamic-binding entry counts, and a static configuration table mapping IP/MAC address pairs to specific interfaces and VLANs. Its monitoring value is primarily security/configuration status: administrators can confirm whether source guard is globally and per-port enabled, how many dynamic bindings are currently learned per interface, and which static IP/MAC bindings have been manually configured. It depends on DHCP snooping (a related feature/MIB) to populate the dynamic bindings that IP Source Guard enforces against. It is typically deployed on Cisco ME1200 access switches in metro Ethernet networks to prevent IP address spoofing at the edge, and administrators can download the ME1200-IP-SOURCE-GUARD-MIB file to load it into their MIB browser.
IPNetwork Monitor allows you to monitor SNMP objects defined in ME1200-IP-SOURCE-GUARD-MIB. Use the built-in SNMP Monitoring Browser to explore available variables, view their current values and descriptions, and select the objects you want to monitor. You can then create SNMP monitors, configure thresholds, and receive alerts when monitored values change.
Supported Devices
- Cisco ME1200 Metro Ethernet switch
Monitoring Examples
An operator would poll me1200IpSourceGuardInterfaceTable/Entry, checking me1200IpSourceGuardInterfaceMode and me1200IpSourceGuardInterfaceDynamicEntryCount to confirm a port is enforcing source guard and has learned the expected number of DHCP-snooped bindings. A port with source guard enabled but a dynamic entry count of zero when a device is known to be connected would reveal a DHCP snooping failure blocking legitimate traffic, while the static table's me1200IpSourceGuardStaticConfigIpAddress/MacAddress entries confirm manually pinned bindings.
What Can Be Monitored
- global IP source guard mode
- per-interface source guard mode
- dynamic binding entry count per port
- static IP/MAC bindings configured
- VLAN association of static bindings
Imported Objects
From CISCOME1200-MIB
| me1200SwitchMgmt | OBJECT-IDENTITY |
From ME1200-TC
| ME1200InterfaceIndex | |
| ME1200RowEditorState |
From SNMPv2-CONF
| MODULE-COMPLIANCE | |
| OBJECT-GROUP |
From SNMPv2-SMI
| Integer32 | |
| IpAddress | |
| MODULE-IDENTITY | |
| OBJECT-TYPE | |
| Unsigned32 |
From SNMPv2-TC
| MacAddress | |
| TEXTUAL-CONVENTION | |
| TruthValue |
OIDs
RFC description
Manages IP source guard configuration to prevent invalid IP-to-MAC bindings on ME1200 switches.
Start monitoring Cisco ME1200 Metro Ethernet switch (IP Source Guard) with a free 30-day trial of IPNetwork Monitor. Import MIBs, browse SNMP OIDs, create custom SNMP monitors, configure alerts, and monitor any SNMP-enabled network device from a single console.