Brocade Unified IP MIB Reference (Supporting FastIron Release 07.5.00) - Manual (Page 47)

Unified IP MIB Reference 19
53-1002549-02
RFC 2863: The Interfaces Group MIB
IfIndex assignment persistance
The following interfaces on the Brocade NetIron XMR, Brocade MLXe, and Brocade NetIron MLX
have ifIndex assignments that are persistent across reboots and switchover operations:
• Physical ports
• Virtual ports
• Loopback ports
NOTE
The ifIndex should be derived from the snIfIndexLookupTable using the InterfaceId (in OID form),
instead of assuming that the ifIndex will always stay persistent across reloads.
On the following interfaces, IfIndex assignments are not persistent across reboots and switchover
operations:
• MPLS tunnel interfaces
• Trunk ports
• IP tunnels
ifType for interfaces
On Brocade NetIron XMR, Brocade NetIron MLX, Brocade MLXe, Brocade NetIron CES, and Brocade
NetIron CER series devices, ifType for all Ethernet interfaces (10/100/1G/10G) returns the value
ethernetCsmacd(6) as mandated by RFC 2665.
If the command snmp-server legacy iftype is configured on the device CLI, ifType returns
gigabitEthernet(117) or fastEther(62). If the command is not configured (or no snmp-server legacy
iftype is issued), then ifType returns the value ethernetCsmacd(6).
Statistics for virtual routing interfaces on 8x10 modules
The ifTable and ifXTable display information for switched and routed packets on virtual routing
interface of the 8x10 modules installed on the Brocade MLXe, Brocade NetIron XMR, and Brocade
NetIron MLX devices. This feature is available on Brocade NetIron XMR, Brocade NetIron MLX, and
Brocade MLXe devices. The extended-counter routed-switched command must be configured to
enable separate accounting of routed and switched packets on virtual routing interfaces.
ifTable attributes
The following MIB attributes of the ifTable return information for switched and routed packets for
the 8x10 modules.
MIB attribute Physical Virtual Loopback IP tunnel MPLS
tunnel Trunk
ifInOctets Yes Yes No No No Yes
ifOutOctets Yes Yes No No Yes Yes
ifInUcastPkts Yes Yes No Yes No Yes
ifOutUcastPkts Yes Yes No No Yes Yes