All MIBs › CTRON-TRANSLATION-MIB › ctTransIbmLlcNullMode
ctTransIbmLlcNullMode
Module: CTRON-TRANSLATION-MIB
OID (symbolic): CTRON-TRANSLATION-MIB::ctTransIbmLlcNullMode
OID (numeric): 1.3.6.1.4.1.52.4.1.3.4.6.1.1.2
Node type: OBJECT-TYPE
Type: INTEGER
Access: read-write
Description: IBM networks systems have a special translation called 'IBM LLC Encapsulation' which is used for translating IBM LLC based protocols between Token Ring and Ethernet Version 2.0 (DIXE) format. This translation does not apply when going between Token Ring and 802.3, since LLC SAPs are maintained. This translation allows connectivity between Token stations separated by an Ethernet segment in an internetwork environment. An Ethernet protocol type of 80 D5 is used to indicate IBM LLC protocol encapsulation.
When enabled(1) all frames outbound on this token ring port and with an LSAP value of 00 (Null) and where the packet originated on an ethernet network will have the IBM LLC protocol field of five bytes stripped from the packet.
When disabled(2) the IBM LLC protocol field is untouched on these packets.
The default value for this object is product specific. A write of notsupported (1) will have no affect.
What is ctTransIbmLlcNullMode?
When enabled, strips the 5-byte IBM LLC encapsulation header from outbound Token Ring frames with LSAP value 00 (Null) that originated on an Ethernet network; disabled leaves that header untouched. This lets IBM LLC-encapsulated traffic that crossed from Ethernet interoperate cleanly once it's back on Token Ring.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.1.3.4.6.1.1.2 snmpwalk -v2c -c public <target> CTRON-TRANSLATION-MIB::ctTransIbmLlcNullMode
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.1.3.4.6.1.1.2.1 snmpget -v2c -c public <target> CTRON-TRANSLATION-MIB::ctTransIbmLlcNullMode.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.52.4.1.3.4.6.1.1.2.1 i <value>
Start monitoring Cabletron LAN switch/bridge (Ethernet-Token Ring translational bridging) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CTRON-TRANSLATION-MIB::ctTransIbmLlcNullMode OID value, configure state conditions and alerts, and monitor any Cabletron LAN switch/bridge (Ethernet-Token Ring translational bridging) from a single console.
OID Breakdown
Upper-level ancestors (11 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.52 | cabletron | Cabletron-MIB |
| 1.3.6.1.4.1.52.4 | mibs | CTRON-AP3000-MIB |
| 1.3.6.1.4.1.52.4.1 | ctron | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.3 | ctNetwork | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.1.3.4 | ctTranslation | CTRON-MIB-NAMES |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.52.4.1.3.4.6 | ctTransIbmLlc | CTRON-TRANSLATION-MIB |
| 1.3.6.1.4.1.52.4.1.3.4.6.1 | ctTransIbmLlcTable | CTRON-TRANSLATION-MIB |
| 1.3.6.1.4.1.52.4.1.3.4.6.1.1 | ctTransIbmLlcEntry | CTRON-TRANSLATION-MIB |
| 1.3.6.1.4.1.52.4.1.3.4.6.1.1.2 | ctTransIbmLlcNullMode | CTRON-TRANSLATION-MIB |