Cisco 3825 - Page 29

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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
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.
The sample below configures cell packing for ATM port modes. It specifies a maximum number of cells
as 28 and a cell packing timer as 3,000 microseconds.
interface ATM0/0/0
no ip address
scrambling-payload
atm mcpt-timers 1000 2000 3000
no atm ilmi-keepalive
atm cell-packing 28 mcpt-timer 3
xconnect 99.99.99.99 100 encapsulation mpls sequencing both
pvc 1/35 l2transport
encapsulation aal0
!
pvc 1/36 l2transport
encapsulation aal0
!
pvc 1/37 l2transport
encapsulation aal0
!
The sample below configures cell packing for the N:1 VCC cell relay mode PW. It specifies a maximum
number of cells as 20 and a cell packing timer as 4,000 microseconds.
interface ATM0/0/1
no ip address
load-interval 30
scrambling-payload
atm mcpt-timers 2000 3000 4000
no atm ilmi-keepalive
pvc 0/101 l2transport
encapsulation aal0
cell-packing 20 mcpt-timer 3
xconnect 99.99.99.99 1101 encapsulation mpls sequencing both
PVC Mapping
The pw-pvc command configures PVC mapping or rewrites for PW-configured PVCs. It specifies the
PW-side vpi/vci value used in sending and receiving PW packets for specified PVCs.
The following example illustrates the use of the pw-pvc command:
pvc 0/40 l2transport
encapsulation aal0
pw-pvc 1/40
xconnect 1.1.1.1 40 encapsulation mpls