Installation Guide

IBR Installation Guide
Page 26 of 32 Doc # 770-00001-3
Aug. 30, 2013
The SNMP agent will support MIB-II (RFC 1213), IF-MIB
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(RFC 2863), and a Fastback
enterprise MIB. Detailed information for configuring SNMP is contained in the CLI Guide.
IBR sends traps supported by Fastback MIB, DISMAN-EVENT-MIB, and NET-SNMP-MIB.
SNMP polling for traps takes up to sixty (60) seconds.
7.4 Switching & Transport
IBR supports 802.1Q (VLAN).
7.5 Data Handling
IBC supports the following OSI
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Layer 2 standards:
o IEEE 802.3ab (Gigabit Ethernet);
o IEEE 802.3as (frame expansion);
o IEEE 802.1Q (VLANs).
In addition, IBR supports port mirroring to monitor port traffic.
7.6 Carrier Ethernet
IBR conforms to the following MEF
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specifications:
o MEF 9 – Abstract Test Suite for Ethernet Services at the UNI
o MEF 14 – Abstract Test Suite for Traffic Management Phase 1
o MEF 19 – Abstract Test Suite for UNI Type 1
7.7 Timing & Synchronization
IBR’s system clock starts when IBR is powered up and maintains time and date based on
Universal Time Coordinated (UTC), also known as Greenwich Mean Time (GMT). The system
clock can be set over the network via NTP.
Detailed instructions for configuring IBR timing and for displaying system time and date are
contained in the CLI Guide.
7.8 Network Time Protocol (NTP)
NTP runs over User Datagram Protocol (UDP), which runs over IP. It is very efficient and
typically requires no more than one NTP packet per minute to synchronize IBR’s system
clock to within one millisecond of the NTP server’s clock.
When IBR is configured to receive NTP packets from another network device, the
relationship between IBR and that device is called an “association” and it is a server
relationship, meaning that IBR will synchronize to the other device (the “server”) and the
other device will not synchronize to IBR.
By default, NTP is disabled on IBR, no NTP associations are defined, and the NTP daemon is
not running. Procedures for enabling and configuring NTP are contained in the CLI Guide.
When IBR is running NTP, IBR can be associated with more than one NTP server. Normally,
IBR will synchronize to the associated NTP server that has the lowest stratum number; that
is the lowest number of hops between the server and its clock source. A stratum 1 time
server has a radio or atomic clock directly attached, a stratum 2 time server receives its time
through NTP from a stratum 1 time server, etc.
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MIB refers to Management Information Base, of which there are several versions
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Open Systems Interconnection
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Metro Ethernet Forum