Cisco 2901 User Manual

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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Chapter Configuring Ethernet CFM and Y.1731 Performance Monitoring on Layer 3 Interfaces
Support for Y.1731 Performance Monitoring on a Routed Port (L3 Subinterface)
Support for Y.1731 Performance Monitoring on a Routed Port (L3
Subinterface)
Y.1731 Performance Monitoring (PM) provides a standard Ethernet PM function that includes
measurement of Ethernet frame delay, frame delay variation, frame loss, and frame throughput
measurements specified by the ITU-T Y-1731 standard and interpreted by the Metro Ethernet Forum
(MEF) standards group.
Note This feature is supported only if you have purchased the DATA technology package functionality
(datak9) licensing package. For more information about managing software activation licenses on the
Cisco ISR and Cisco ISR G2 platforms, see
http://www.cisco.com/en/US/docs/routers/access/sw_activation/SA_on_ISR.html.
Frame Delay
Ethernet frame delay measurement is used to measure frame delay and frame delay variations. Ethernet
frame delay is measured using the Delay Measurement Message (DMM) method.
Restrictions for Configuring Two-Way Delay Measurement
Follow the guidelines and restrictions listed here when you configure two-way delay measurement:
• Y.1731 PM measurement works only for a point-to-point network topology.
• The granularity of the clock for delay measurement is in seconds and nanoseconds.
• CFM Y.1731 packets work with a maximum of two VLAN tags. The expected behavior is not
observed with more VLAN tags. Also, CFM Y.1731 packets do not work with untagged cases.
Configuring Two-Way Delay Measurement
The following steps show how to configure two-way delay measurement. Both single and double tagging
methods are included in the steps listed below.
SUMMARY STEPS
Step 1 enable
Step 2 configure terminal
Step 3 ip sla operation number
Step 4 ethernet y1731 delay DMM domain value vlan vlan-id mpid value cos value source mpid value
or
ethernet y1731 delay DMM domain value vlan vlan-id inner-vlan inner vlan-id mpid value cos value
source mpid value
Step 5 aggregate interval seconds
Step 6 exit
Step 7 ip sla schedule operation number start-time {start time | now}

Cisco 2901 Specifications

General

Operating altitude	0 - 3000 m
Non-operating altitude	0 - 4570 m
Storage temperature (T-T)	-40 - 70 °C
Operating temperature (T-T)	0 - 40 °C
Storage relative humidity (H-H)	5 - 95 %
Operating relative humidity (H-H)	10 - 85 %
Ethernet LAN	Yes
Cabling technology	10/100/1000BASE-T(X)
Networking standards	IEEE 802.1Q, IEEE 802.1ag, IEEE 802.3, IEEE 802.3ab, IEEE 802.3af, IEEE 802.3ah
Ethernet LAN data rates	10, 100, 1000 Mbit/s
Ethernet interface type	Gigabit Ethernet
DHCP client	-
Routing protocols	BGP, EIGRP, OSPF
Supported protocols	IPv4, IPv6, IS-IS, IGMPv3, PIM SM, SSM, DVMRP, IPSec, GRE, BVD, MPLS, L2TPv3, PPP, MLPPP, MLFR, HDLC, RS-232, RS-449, X.21, V.35, EIA-530, PPPoE, ATM
USB version	2.0
RS-232 ports	1
Expansion slots	4 x EHWIC 2 x DSP 1 x ISM
Ethernet LAN (RJ-45) ports	2
Firewall security	Cisco IOS
Input current	1.5 A
AC input voltage	100 - 240 V
Power source type	AC
AC input frequency	47 - 63 Hz
Power consumption (typical)	40 W
Product color	Black
Rack capacity	1U
Safety	UL 60950-1, CAN/CSA C22.2 No. 60950-1, EN 60950-1, AS/NZS 60950-1, IEC 60950-1
Flash memory	256 MB
Internal memory	512 MB
Electromagnetic compatibility	47 CFR, ICES-003, EN55022, CISPR22, AS/NZS 3548, VCCI V-3, EN 300-386, EN 61000, EN 55024, CISPR 24EN50082-1

Weight and Dimensions

Depth	439.4 mm
Width	438.2 mm
Height	44.5 mm
Weight	6100 g