Cisco Service Provider Access Products Deployment Best Practices Guide

Last Updated: February 2014

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Text Part Number: OL-30517-01

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Cisco ME3600X-24TS/ME3600-24CX/ME3800X Design Guide

© 2014 Cisco Systems, Inc. All rights reserved.

 

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Preface

Introduction The Objective of this document is to cover the best deployment practices for the Cisco Service Provider Access products.

Audience This document is intended for all technical person who are involved in the design/deployment of ME3600X/ME3800X, CISCO ASR 903 with CISCO ASR 9000 Carrier Ethernet products.

 

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Chapter 1 Best Practices

The Best practices are designed around achieving optimization of configurations and platform resources.

Best Practices Summary

ME3600X/ME3800X ME3600X-24CX ASR903

MPLS Apply Label allocate filter to conserve MPLS label space.

Allocate label only to relevant prefixes.

Apply Label allocate filter to conserve MPLS label space.

Allocate label only to relevant prefixes.

Apply Label allocate filter to conserve MPLS label space. Allocate label only to relevant prefixes.

QoS Use qos-group based classification.

At Ingress : Classify the traffic flows and set qos-groups.

At Egress : Limit classification based on qos-group values set at ingress.

Use qos-group based classification.

At Ingress : Classify the traffic flows and set qos-groups.

At Egress : Limit classification based on qos-group values set at ingress.

Use qos-group based classification.

At Ingress : Classify the traffic flows and set qos-groups.

At Egress : Limit classification based on qos-group values set at ingress.

RLFA Below configurations are mandatory before configuring RLFA

“mpls ldp discovery targeted-hello accept”

“mpls ldp explicit-null “

Use IP prefix suppression to reduce the number of IGP prefixes advertised. By enabling the above command IGP advertises only loopback prefixes.

Below configurations are mandatory before configuring RLFA

“mpls ldp discovery targeted-hello accept”

“mpls ldp explicit-null “

Use IP prefix suppression to reduce the number of IGP prefixes advertised. By enabling the above command IGP advertises only loopback prefixes.

Below configurations are mandatory before configuring RLFA

“mpls ldp discovery targeted-hello accept”

“mpls ldp explicit-null “

Use IP prefix suppression to reduce the number of IGP prefixes advertised. By enabling the above command IGP advertises only loopback prefixes.

BFD Minimum BFD hello timer supported is 50ms.

No Hardware Off-load supported

Use hardware off-load for faster BFD timers.

Minimum BFD hello timer supported is 3.3ms, with hardware off-load.

Hardware Off-load supported only for Asynchronous mode (no-echo)

Use hardware off-load for faster BFD timers.

Minimum BFD hello timer supported is 3.3ms, with hardware off-load.

Hardware Off-load supported for both echo and no-echo mode.

Best Practices MPLS - Details

ME3600X/ME3800X ME3600X-24CX ASR903

MPLS Apply Label allocate filter to conserve MPLS label space. Allocate label only to relevant prefixes * mpls ldp label allocate global host-routes exit ip prefix-list List3 permit 192.168.0.0/16 ge 18 ! mpls ldp label allocate global prefix-list List3 exit

Apply Label allocate filter to conserve MPLS label space. Apply label only to relevant prefixes * mpls ldp label allocate global host-routes exit ip prefix-list List3 permit 192.168.0.0/16 ge 18 ! mpls ldp label allocate global prefix-list List3 exit

Apply Label allocate filter to conserve MPLS label space. A pply label only to relevant prefixes * mpls ldp label allocate global host-routes exit ip prefix-list List3 permit 192.168.0.0/16 ge 18 ! mpls ldp label allocate global prefix-list List3 exit

Best Practices QoS – Configuration example

INGRESS QoS class-map match-any NA4-1Q-VoIP match cos 5 match mpls exp topmost 5 match ip prec 5 class-map match-any NA4-1Q-Video match cos 4 match mpls exp topmost 4 match ip prec 4 policy-map NA4-1Q-Ingress class NA4-1Q-VoIP set qos-group 5 class NA4-1Q-Video set qos-group 4

EGRESS QoS class-map match-all match-qos5 match qos-group 5 class-map match-all match-qos4 match qos-group 4 policy-map NA4-1Q-Egress class match-qos5 priority class match-qos4 bandwidth remaining percent 15 queue-limit 824

Best Practices BFD

Cisco ME3600X-24CX

Release Hardware Mode

Echo Mode No-echo mode

15.2(2)S (March 2012)

Onwards Not supported Supported (3.3ms)

15.4(2)S (March 2014)

Onwards

Will be supported

(3.3ms)

Supported

(3.3ms)

Cisco ASR 903

Release No Echo Mode Echo Mode

RLS 3.7 Hardware offload: min 50 ms Software only: min 200 ms

RLS 3.8 Hardware offload: min 3.3 ms Software only: min 200 ms

RLS 3.9 Hardware offload: min 3.3 ms Hardware offload: min 3.3 ms

Chapter 2 FAQ

ASR 903 hardware 1. 10 GE IM are supported only in slot 0 – 3. 2. Hence the chassis can have only 4 of 10GE interfaces. 3. ASR 903 supports a total of 47 GE ports. 4. When a GE IM is installed in the top slot (slot 5), then Interface GigabitEthernet 0/5/0 is disabled

Timing Support across the Products

ME3600X/ME3800X ME3600X-24CX ASR 903

1588 OC Not supported Supported Supported

1588 BC Not supported Supported Supported

1588 TC Not supported Supported Supported

SyncE Supported Supported Supported

ISSU ME3600X/ME3800X ME3600X-24CX ASR 903

ISSU Not supported Not Supported Supported

Service Activation - Y.1564 ME3600X/ME3800X ME3600X-24CX ASR 903

Service Activation

Not supported Supported Not Supported

Service Activation – ME3600X-24CX Feature Details

Components IOS Release 15.3(3)S (July 2013)

Services •ELINE and ELAN (Bridge Domain and PseudoWire)

Traffic Generation •1-way and 2-way •Packet size (64 to 1500 B) •User configurable traffic rates

Performance Measurement •1-way and 2-way •Throughput •Loss

Data-plane Loopback •Inward and Outward with MAC-SWAP •With QoS support

Manageability CLI

Packet Size 64 to 1500 bytes

Flow Parameters MAC DA MAC SA INNER VLAN OUTER VLAN INNER COS OUTER COS

Traffic Rate Unit kbps

Maximum Traffic Rate 1 Gbps

Components IOS 15.4(1)S (November 2013)

Services •Layer 2 traffic profile •Layer 3 traffic Profile

Traffic Generation •IMIX traffic up to 100Mbps

•CIR-EIR Bandwidth profile aware (COS)

•All previous options available for L2

•IMIX traffic up to 100Mbps •CIR-EIR Bandwidth profile aware (DSCP)

Performance Measurement

•CIR-EIR Bandwidth profile aware (COS) •CIR-EIR Bandwidth profile aware (DSCP)

Chapter 3 Sample Configuration with best practices incorporated

service timestamps debug datetime msec service timestamps log datetime msec service internal platform bfd allow-svi ! hostname ME3600-1 ! ! enable secret 5 $1$P/e1$Z.DhxuczSw./kTasHlb870 ! ip routing ! mpls ldp explicit-null mpls ldp label allocate global host-routes mpls ldp discovery targeted-hello accept ! class-map match-all match-qos5 match qos-group 5 class-map match-all match-qos4 match qos-group 4 class-map match-any NA4-1Q-Video match cos 4 match mpls experimental topmost 4 match ip precedence 4 class-map match-any NA4-1Q-VoIP match cos 5 match mpls experimental topmost 5 match ip precedence 5 ! policy-map NA4-1Q-Egress class match-qos5 priority class match-qos4 bandwidth remaining percent 15 queue-limit 824 packets ! policy-map NA4-1Q-Ingress class NA4-1Q-VoIP set qos-group 5 class NA4-1Q-Video set qos-group 4 ! interface Loopback0 ip address 122.3.3.1 255.255.255.255 ! interface GigabitEthernet0 !

interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 no switchport ip address 123.0.1.2 255.255.255.0 mpls ip service-policy input NA4-1Q-Ingress ! interface GigabitEthernet0/4 no switchport ip address 123.1.1.1 255.255.255.0 mpls ip service-policy output NA4-1Q-Egress ! interface GigabitEthernet0/5 ! interface GigabitEthernet0/6 ! interface GigabitEthernet0/7 ! interface GigabitEthernet0/8 ! interface GigabitEthernet0/9 ! interface GigabitEthernet0/10 shutdown ! router ospf 100 fast-reroute per-prefix enable area 0 prefix-priority low fast-reroute per-prefix remote-lfa tunnel mpls-ldp prefix-suppression timers throttle spf 150 150 5000 timers throttle lsa 50 100 5000 timers lsa arrival 30 timers pacing flood 5 network 122.3.3.1 0.0.0.0 area 0 network 123.0.1.0 0.0.0.255 area 0 network 123.1.1.0 0.0.0.255 area 0 ! mpls ldp router-id Loopback0 force ! ! control-plane ! ! line con 0 exec-timeout 60 0 logging synchronous line vty 0 4 exec-timeout 30 0 password cisco logging synchronous login line vty 5 exec-timeout 30 0 password cisco

logging synchronous login line vty 6 15 exec-timeout 30 0 password cisco login ! exception crashinfo file flash:crashinfo controller BITS input applique E1 framing fas_nocrc linecode ami ! end