Table Of Contents
Configuration Examples
Examples
Asymmetric PWE3 Configuration
PWE3 Redundancy Configuration
TDM over MPLS Configuration
ATM over MPLS Configuration
GSM-Only Configuration
GSM-Only Configuration Using Satellite
GSM Congestion Management
Configuration Examples
The Cisco MWR 2941-DC supports a variety of topology designs based on various GSM configurations, including the following common topologies:
•
A backhaul interface is used to transfer optimized GSM traffic between RAN-O devices. The traditional backhaul interface is comprised of one or more T1/E1 controllers logically combined to form a multilink connect (except HSDPA, which uses the backhaul interface for T1/E1 line clocking).
•
A shorthaul interface is used to transfer GSM traffic from the BTS/Node-B to the Cisco MWR 2941-DC router and from the Cisco MWR 2941-DC router to the BSC/RNC. The traditional shorthaul connections on the RAN-O devices are connected through the Cisco T1/E1 interface card.
•
Topology naming conventions such as 3x2 and 4x3 are used to describe the type of deployment. The first number signifies the number of GSM shorthaul interface connections and the second number signifies the number of multilink backhaul interface connections.
Examples
This appendix includes examples of the following real-world RAN-O configurations:
Note
The Cisco MWR 2941-DC does not currently support L2TP as shown in some of the following examples.
•
Asymmetric PWE3 Configuration
•
PWE3 Redundancy Configuration
•
TDM over MPLS Configuration
•
ATM over MPLS Configuration
•
GSM-Only Configuration
•
GSM-Only Configuration Using Satellite
•
GSM Congestion Management
Note
The network addresses in these examples are generic addresses, so you must replace them with actual addresses for your network.
Asymmetric PWE3 Configuration
The following example shows an Asymmetric PWE3 configuration (Figure B-1).
Figure B-1 Asymmetric PWE3 Configuration
PE_1
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no service password-encryption
network-clock-select 1 E1 1/3
ipran-alt-interrupt tracing
multilink bundle-name authenticated
description connected to E1 4/0 of BERT
preferred-path peer 50.0.0.2
ip local interface Loopback50
ip address 50.0.0.1 255.255.255.255
xconnect 50.0.0.2 1 encapsulation mpls
interface GigabitEthernet0/0
ip address 20.0.0.1 255.0.0.0
xconnect 50.0.0.2 2 encapsulation mpls
interface GigabitEthernet0/1
ip address 60.0.0.1 255.0.0.0
xconnect 50.0.0.2 3 encapsulation mpls
xconnect 50.0.0.2 4 encapsulation mpls
xconnect 50.0.0.2 5 encapsulation mpls
xconnect 50.0.0.2 6 encapsulation mpls
mcpt-timers 2000 6000 10000
xconnect 50.0.0.2 101 encapsulation mpls
xconnect 50.0.0.2 102 pw-class mpls
cell-packing 28 mcpt-timer 2
xconnect 50.0.0.2 111 encapsulation mpls
cell-packing 18 mcpt-timer 3
xconnect 50.0.0.2 112 encapsulation mpls
interface ATM0/IMA0.1 point-to-point
xconnect 50.0.0.2 103 encapsulation mpls
interface ATM0/IMA0.2 multipoint
cell-packing 20 mcpt-timer 2
xconnect 50.0.0.2 104 pw-class mpls
interface ATM0/IMA0.3 point-to-point
cell-packing 10 mcpt-timer 3
xconnect 50.0.0.2 105 pw-class mpls
interface ATM0/IMA0.4 point-to-point
cell-packing 14 mcpt-timer 3
xconnect 50.0.0.2 106 pw-class mpls one-to-one
interface ATM0/IMA0.6 multipoint
xconnect 50.0.0.2 107 pw-class mpls
xconnect 50.0.0.2 108 encapsulation mpls
cell-packing 12 mcpt-timer 1
xconnect 50.0.0.2 109 encapsulation mpls
mcpt-timers 1000 5000 10000
cell-packing 10 mcpt-timer 3
xconnect 50.0.0.2 10 pw-class l2tp
xconnect 50.0.0.2 20 pw-class l2tp
cell-packing 28 mcpt-timer 3
xconnect 50.0.0.2 30 encapsulation mpls pw-class mpls one-to-one
xconnect 50.0.0.2 40 pw-class mpls
xconnect 50.0.0.2 50 pw-class mpls one-to-one
interface ATM1/0.1 point-to-point
xconnect 50.0.0.2 13 pw-class mpls
interface ATM1/0.2 multipoint
cell-packing 2 mcpt-timer 1
xconnect 50.0.0.2 12 encapsulation mpls
interface ATM1/0.3 point-to-point
xconnect 50.0.0.2 14 encapsulation mpls
interface ATM1/0.4 point-to-point
xconnect 50.0.0.2 15 pw-class mpls one-to-one
interface ATM1/0.6 multipoint
xconnect 50.0.0.2 16 pw-class mpls
cell-packing 8 mcpt-timer 3
xconnect 50.0.0.2 17 pw-class mpls
cell-packing 16 mcpt-timer 2
xconnect 50.0.0.2 18 pw-class mpls
interface ATM1/0.7 multipoint
mcpt-timers 1000 5000 10000
cell-packing 20 mcpt-timer 2
xconnect 50.0.0.2 11 encapsulation mpls
interface ATM1/1.1 point-to-point
interface ATM1/1.2 multipoint
ip route 9.10.0.254 255.255.255.255 9.11.49.254
ip route 30.0.0.0 255.0.0.0 GigabitEthernet0/0
ip route 50.0.0.2 255.255.255.255 20.0.0.2
ip route 50.0.0.5 255.255.255.255 20.0.0.2
mpls ldp router-id Loopback50 force
alias exec cpu show proc cpu | i CPU
alias exec hist show proc cpu history
alias exec clc clear counters
alias exec cmpls clear mpls counters
PE_2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
network-clock-select 1 E1 0/0
network-clock-select 2 E1 0/1
network-clock-select 3 E1 0/2
network-clock-select 4 E1 0/3
network-clock-select 5 E1 0/4
network-clock-select 6 E1 0/5
ipran-alt-interrupt tracing
multilink bundle-name authenticated
preferred-path peer 50.0.0.1
ip local interface Loopback50
ip address 50.0.0.2 255.255.255.255
xconnect 50.0.0.1 1 encapsulation mpls
interface GigabitEthernet0/0
ip address 30.0.0.1 255.0.0.0
xconnect 50.0.0.1 2 encapsulation mpls
interface GigabitEthernet0/1
ip address 70.0.0.1 255.0.0.0
xconnect 50.0.0.1 3 encapsulation mpls
xconnect 50.0.0.1 4 encapsulation mpls
xconnect 50.0.0.1 5 encapsulation mpls
xconnect 50.0.0.1 6 encapsulation mpls
mcpt-timers 2000 6000 10000
xconnect 50.0.0.1 101 encapsulation mpls
xconnect 50.0.0.1 102 pw-class mpls
xconnect 50.0.0.1 111 encapsulation mpls
xconnect 50.0.0.1 112 encapsulation mpls
interface ATM0/IMA0.1 point-to-point
xconnect 50.0.0.1 103 encapsulation mpls
interface ATM0/IMA0.2 multipoint
cell-packing 15 mcpt-timer 3
xconnect 50.0.0.1 104 pw-class mpls
interface ATM0/IMA0.3 point-to-point
xconnect 50.0.0.1 105 pw-class mpls
interface ATM0/IMA0.4 point-to-point
cell-packing 7 mcpt-timer 2
xconnect 50.0.0.1 106 pw-class mpls one-to-one
interface ATM0/IMA0.6 multipoint
xconnect 50.0.0.1 107 pw-class mpls
xconnect 50.0.0.1 108 encapsulation mpls
cell-packing 9 mcpt-timer 3
xconnect 50.0.0.1 109 encapsulation mpls
ip address 1.1.1.2 255.0.0.0
mcpt-timers 1000 5000 10000
cell-packing 25 mcpt-timer 3
xconnect 50.0.0.1 10 pw-class l2tp
xconnect 50.0.0.1 20 pw-class l2tp
cell-packing 12 mcpt-timer 2
xconnect 50.0.0.1 30 encapsulation mpls pw-class mpls one-to-one
xconnect 50.0.0.1 40 pw-class mpls
xconnect 50.0.0.1 50 pw-class mpls one-to-one
protocol ip 1.1.1.1 broadcast
interface ATM1/0.1 point-to-point
xconnect 50.0.0.1 13 pw-class mpls
interface ATM1/0.2 multipoint
cell-packing 10 mcpt-timer 2
xconnect 50.0.0.1 12 encapsulation mpls
interface ATM1/0.3 point-to-point
xconnect 50.0.0.1 14 encapsulation mpls
interface ATM1/0.4 point-to-point
xconnect 50.0.0.1 15 pw-class mpls one-to-one
interface ATM1/0.6 multipoint
xconnect 50.0.0.1 16 pw-class mpls
cell-packing 18 mcpt-timer 3
xconnect 50.0.0.1 17 pw-class mpls
cell-packing 24 mcpt-timer 2
xconnect 50.0.0.1 18 pw-class mpls
interface ATM1/0.7 multipoint
mcpt-timers 1000 5000 10000
cell-packing 20 mcpt-timer 2
xconnect 50.0.0.1 11 encapsulation mpls
ip route 9.10.0.254 255.255.255.255 9.11.49.254
ip route 20.0.0.0 255.0.0.0 GigabitEthernet0/0
ip route 50.0.0.1 255.255.255.255 70.0.0.2
ip route 50.0.0.5 255.255.255.255 70.0.0.2
mpls ldp router-id Loopback50 force
alias exec cpu show proc cpu | i CPU
alias exec hist show proc cpu history
alias exec clc clear counters
alias exec cmpls clear mpls counters
PWE3 Redundancy Configuration
The following example shows a PWE3 Redundancy configuration (Figure B-2).
Figure B-2 PWE3 Redundancy Configuration
MWR_1
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
logging buffered 10000000
network-clock-select 1 E1 1/2
multilink bundle-name authenticated
xconnect 2.2.2.2 1 encapsulation mpls
xconnect 2.2.2.2 3 encapsulation mpls
ip address 1.1.1.1 255.255.255.255
interface GigabitEthernet0/0.3
xconnect 2.2.2.2 5 encapsulation mpls
interface GigabitEthernet0/1
ip address 9.9.9.6 255.255.255.0
ip route 2.2.2.2 255.255.255.255 9.9.9.8
snmp-server community public RO
exception data-corruption buffer truncate
MWR_2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
logging buffered 10000000
network-clock-select 1 E1 0/0
multilink bundle-name authenticated
mpls ldp session protection
xconnect 1.1.1.1 1 encapsulation mpls
xconnect 1.1.1.1 2 encapsulation mpls
xconnect 1.1.1.1 3 encapsulation mpls
xconnect 1.1.1.1 4 encapsulation mpls
ip address 2.2.2.2 255.255.255.255
interface GigabitEthernet0/0.3
xconnect 1.1.1.1 5 encapsulation mpls
interface GigabitEthernet0/0.4
xconnect 1.1.1.1 6 encapsulation mpls
interface GigabitEthernet0/1
ip address 9.9.9.8 255.255.255.0
ip route 1.1.1.1 255.255.255.255 9.9.9.6
snmp-server community private RW
snmp-server community public RO
snmp-server ifindex persist
snmp-server trap link ietf
no snmp-server sparse-tables
snmp-server queue-length 100
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps ipran
mpls ldp router-id Loopback1 force
exception data-corruption buffer truncate
TDM over MPLS Configuration
Figure B-3 shows a TDM over MPLS configuration. The configuration uses both SAToP and CESoPSN for E1 and T1.
Figure B-3 TDM over MPLS Configuration
MWR_A
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
no service password-encryption
network-clock-select 1 E1 0/0
cem-group 0 timeslots 1-31
description E1 CESoPSN example
description E1 SATOP example
description T1 SATOP example
cem-group 5 timeslots 1-24
description T1 CESoPSN example
ip address 30.30.30.1 255.255.255.255
xconnect 30.30.30.2 300 encapsulation mpls
interface GigabitEthernet0/0
xconnect 30.30.30.2 301 encapsulation mpls
interface GigabitEthernet0/1
ip address 50.50.50.1 255.255.255.0
xconnect 30.30.30.2 304 encapsulation mpls
xconnect 30.30.30.2 305 encapsulation mpls
ip route 30.30.30.2 255.255.255.255 50.50.50.2
MWR_B
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
no service password-encryption
network-clock-select 1 E1 1/0
cem-group 0 timeslots 1-31
description E1 CESoPSN example
description E1 SATOP example
description T1 SATOP example
cem-group 5 timeslots 1-24
description T1 CESoPSN example
ip address 30.30.30.2 255.255.255.255
xconnect 30.30.30.1 300 encapsulation mpls
interface GigabitEthernet0/0
xconnect 30.30.30.1 301 encapsulation mpls
interface GigabitEthernet0/1
ip address 50.50.50.2 255.255.255.0
xconnect 30.30.30.1 304 encapsulation mpls
xconnect 30.30.30.1 305 encapsulation mpls
ip route 30.30.30.2 255.255.255.255 50.50.50.1
ATM over MPLS Configuration
This example shows how to accomplish the following configurations (Figure B-4):
•
port mode PW on interface 0/0
•
AAL5 SDU mode PW on 0/1 PVC 0/100
•
N:1 VCC cell mode PW on 0/1 PVC 0/101
•
Multiple PVCs N:1 VCC cell mode PW on 0/1.1
•
1:1 VCC cell mode PW on 0/1 PVC 0/102
•
Cell-packing for port mode PWs
•
VCC cell-relay mode PWs
•
PVC mapping for 0/1.1 N:1 VCC cell relay PWs
Figure B-4 ATM over MPLS Configuration
MWR_A
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
network-clock-select 1 E1 1/0
multilink bundle-name authenticated
mpls label range 100 100000 static 16 99
pseudowire-class mpls-exp-5
ip address 88.88.88.88 255.255.255.255
mcpt-timers 1000 2000 3000
cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 100 encapsulation mpls
interface GigabitEthernet0/0
ip address 172.18.52.129 255.255.255.0
mcpt-timers 1000 2000 3000
xconnect 99.99.99.99 1100 encapsulation mpls
cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 1101 encapsulation mpls
cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 1102 encapsulation mpls
cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 1103 pw-class mpls-exp-5
interface ATM0/1.1 multipoint
cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 1200 encapsulation mpls
interface GigabitEthernet0/1
description interface to 7600 fas 3/5
ip address 2.2.2.2 255.255.255.0
ip route 0.0.0.0 0.0.0.0 172.18.52.1
ip route 99.99.99.99 255.255.255.255 2.2.2.3
mpls ldp router-id Loopback0
MWR_B
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
network-clock-select 1 E1 0/0
multilink bundle-name authenticated
pseudowire-class mpls-exp-5
ip address 99.99.99.99 255.255.255.255
mcpt-timers 1000 2000 3000
cell-packing 28 mcpt-timer 3
xconnect 88.88.88.88 100 encapsulation mpls
interface GigabitEthernet0/0
ip address 172.18.52.130 255.255.255.0
mcpt-timers 1000 2000 3000
xconnect 88.88.88.88 1100 encapsulation mpls
cell-packing 28 mcpt-timer 3
xconnect 88.88.88.88 1101 encapsulation mpls
cell-packing 28 mcpt-timer 3
xconnect 88.88.88.88 1102 encapsulation mpls
cell-packing 28 mcpt-timer 3
xconnect 88.88.88.88 1103 pw-class mpls-exp-5
interface ATM0/1.1 multipoint
cell-packing 28 mcpt-timer 3
xconnect 88.88.88.88 1200 encapsulation mpls
interface GigabitEthernet0/1
ip address 2.2.2.3 255.255.255.0
ip route 0.0.0.0 0.0.0.0 172.18.52.1
ip route 88.88.88.88 255.255.255.255 2.2.2.2
mpls ldp router-id Loopback0
GSM-Only Configuration
The standard GSM topology includes one or more shorthaul interface connections from the BTS to a Cisco MWR 2941-DC through separate T1/E1 connections. The Cisco MWR 2941-DC routers are connected back-to-back using an MLPPP backhaul connection (two or more T1/E1 connections). At the BSC side, the Cisco MWR 2941-DC-to-BSC connectivity is exactly the same as the BTS-to-Cisco MWR 2941-DC connections. In this example, only GSM traffic traverses the topology (Figure B-5).
Figure B-5 GSM-Only Configuration
MWR_A
network-clock-select 1 E1 0/1
ipran-mib snmp-access inBand
ipran-mib location cellSite
channel-group 0 timeslots 1-31
channel-group 0 timeslots 1-31
channel-group 0 timeslots 1-31
class-map match-any llq-class
bandwidth remaining percent 1
ip address 10.10.10.1 255.255.255.252
ppp multilink fragment delay 0 1
max-reserved-bandwidth 100
service-policy output llq-policy
ip rtp header-compression ietf-format
gsm-abis local 10.10.10.1 4444
gsm-abis remote 10.10.10.2 4444
max-reserved-bandwidth 100
gsm-abis local 10.10.10.1 4446
gsm-abis remote 10.10.10.2 4446
logging history debugging
snmp-server community public RO
snmp-server queue-length 100
snmp-server enable traps snmp linkdown linkup coldstart warmstart
snmp-server enable traps ipran
snmp-server enable traps syslog
snmp-server trap link ietf
snmp-server ifIndex persist
no snmp-server sparse-table
snmp-server host 64.50.100.254 version 2c V2C
MWR_B
network-clock-select 1 E1 0/0
network-clock-select 2 E1 0/2
ipran-mib snmp-access outOfBand
ipran-mib location aggSite
channel-group 0 timeslots 1-31
channel-group 0 timeslots 1-31
channel-group 0 timeslots 1-31
class-map match-any llq-class
bandwidth remaining percent 1
ip address 10.10.10.2 255.255.255.252
ppp multilink fragment delay 0 1
max-reserved-bandwidth 100
service-policy output llq-policy
ip rtp header-compression ietf-format
gsm-abis local 10.10.10.2 4444
gsm-abis remote 10.10.10.1 4444
max-reserved-bandwidth 100
gsm-abis local 10.10.10.2 4446
gsm-abis remote 10.10.10.1 4446
logging history debugging
snmp-server community public RO
snmp-server queue-length 100
snmp-server enable traps snmp linkdown linkup coldstart warmstart
snmp-server enable traps ipran
snmp-server enable traps syslog
snmp-server trap link ietf
snmp-server ifIndex persist
no snmp-server sparse-table
snmp-server host 64.50.100.254 version 2c V2C
GSM-Only Configuration Using Satellite
The GSM-only using satellite configuration allows for point-to-point network optimization (Figure B-6).
Figure B-6 GSM-Only Configuration Using Satellite
MWR_A
network-clock-select 1 E1 0/1
ipran-mib snmp-access inBand
ipran-mib location cellSite
channel-group 0 timeslots 1-20
channel-group 0 timeslots 1-20
class-map match-any llq-class
bandwidth remaining percent 1
ip address 10.10.10.1 255.255.255.252
ppp multilink fragment delay 0 1
max-reserved-bandwidth 100
service-policy output llq-policy
ip rtp header-compression ietf-format
gsm-abis local 10.10.10.1 4444
gsm-abis remote 10.10.10.2 4444
max-reserved-bandwidth 100
logging history debugging
snmp-server community public RO
snmp-server queue-length 100
snmp-server enable traps snmp linkdown linkup coldstart warmstart
snmp-server enable traps ipran
snmp-server enable traps syslog
snmp-server trap link ietf
snmp-server ifIndex persist
no snmp-server sparse-table
snmp-server host 64.50.100.254 version 2c V2C
MWR_B
network-clock-select 1 E1 0/0
ipran-mib snmp-access outOfBand
ipran-mib location aggSite
channel-group 0 timeslots 1-20
channel-group 0 timeslots 1-20
class-map match-any llq-class
bandwidth remaining percent 1
ip address 10.10.10.2 255.255.255.252
ppp multilink fragment delay 0 1
max-reserved-bandwidth 100
service-policy output llq-policy
ip rtp header-compression ietf-format
gsm-abis local 10.10.10.2 4444
gsm-abis remote 10.10.10.1 4444
max-reserved-bandwidth 100
logging history debugging
snmp-server community public RO
snmp-server queue-length 100
snmp-server enable traps snmp linkdown linkup coldstart warmstart
snmp-server enable traps ipran
snmp-server enable traps syslog
snmp-server trap link ietf
snmp-server ifIndex persist
no snmp-server sparse-table
snmp-server host 64.50.100.254 version 2c V2C
GSM Congestion Management
These examples show how to configure GSM congestion management for the BTS side and the BSC side.
BTS side
gsm-abis local 10.10.10.1 4444
gsm-abis remote 10.10.10.2 4444
gsm-abis congestion enable
gsm-abis congestion critical 1-10
gsm-abis congestion critical 31
BSC side
gsm-abis local 10.10.10.2 4444
gsm-abis remote 10.10.10.1 4444
gsm-abis congestion enable
gsm-abis congestion critical 1-10
gsm-abis congestion critical 31