Cisco 3825 - Page 31

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Cisco 3825 Mobile Wireless Edge Router Software Configuration Guide
OL-15667-03
Chapter 1 Overview of the Cisco 3825 Mobile Wireless Edge Router
New Features in Cisco IOS Release 12.4(16)MR1
atm mcpt-timers 1000 2000 3000
no atm ilmi-keepalive
pvc 0/101 l2transport
encapsulation aal0
cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 1101 pw-class l2tp
!
2. When more than one PVC needs to be mapped to a PW, configure the xconnect command under the
subinterface mode to configure a N:1 VCC cell relay mode PW. All PVCs configured under this
subinterface are mapped to the PW.
A sample configuration is written as follows:
interface ATM0/0/1.1 multipoint
no snmp trap link-status
atm cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 1200 pw-class l2tp
pvc 1/35 l2transport
encapsulation aal0
pw-pvc 2/135
!
pvc 1/36 l2transport
encapsulation aal0
pw-pvc 2/136
!
pvc 1/37 l2transport
encapsulation aal0
pw-pvc 2/137
!
!
ATM AAL5-SDU Mode
ATM AAL5-SDU mode maps one AAL5 type PVC to a PW. Use the xconnect command under an AAL5
encapsulation type PVC to configure a AAL5-SDU mode PW.
A sample configuration is written as follows:
interface ATM0/0/1
no ip address
load-interval 30
scrambling-payload
atm mcpt-timers 1000 2000 3000
no atm ilmi-keepalive
pvc 0/100 l2transport
encapsulation aal5
xconnect 99.99.99.99 1100 pw-class l2tp
!
Cell Packing
Cell packing or concatenation supports Port, N:1 VCC cell, or 1:1 VCC cell mode. Cell packing can be
configured with a parameter of a maximum number of cells and a parameter of cell packing timer.
“atm mcpt-timers [timer1] [timer2] [timer3]” can be used under the interface mode to configure three
cell packing timer values. Timer values are in microseconds, and the granularity is 1,000 microseconds,
namely 1 millisecond. The timer value is referenced by the “atm cell-packing …” and “cell-packing
…” commands.