Interface Syntax; C H A P T E R 2 8-Port E3/Ds3 Atm Line Card Configuration - Cisco 10000 Series Configuration Manual

Chapter 2 8-Port E3/DS3 ATM Line Card Configuration
Table 2-4
ATM Line Card
8-Port E3/DS3 0 = CBR VCs
Configuring more channels or VCs than there are available priority locations can cause random channels
or VCs to get stuck in the SAR. This occurs when an active channel tries to reschedule itself, but no
priority locations are available. Therefore, the channel cannot find a place to reschedule itself, which
results in a lost event for the channel, and the channel becomes stuck in the SAR.
On the PRE2, when a VC becomes stuck in the SAR, the PRE2 scheduler stops forwarding traffic on
only the VC that is stuck in the SAR; the other VCs still carry traffic. On the PRE3, the PRE3 scheduler
stops forwarding traffic on all the VCs configured on that ATM line card.

Interface Syntax

To specify an interface number in a configuration command, use the syntax in
interfaces and subinterfaces on the 8-Port E3/DS3 ATM line card in the Cisco series 10000 router.
Table 2-5 8-Port E3/DS3 ATM Line Card Interface Syntax
Type of Interface
8-Port E3/DS3 interface
8-Port E3/DS3 subinterface
8-Port E3/DS3 interface
8-Port E3/DS3 subinterface
Examples:
•
•
OL-8834-04
Maximum Number of VCs per Priority per Port
SAR Priority Levels
0 = VBR-nrt VCs
1 = UBR VCs
Router
10008
10008
10005
10005
Modify a permanent virtual circuit (PVC) associated with an interface.
Router(config)# interface atm 2/0/0
Router(config-if)# pvc 0/200
Router(config-if-atm-vc)#
Modify a PVC associated with a subinterface.
Router(config)# interface atm 7/0/0.1
Router(config-subif)# pvc 0/101
Router(config-if-atm-vc)#
VC Rate
Half line rate
and below
Slot Subslot
1 through 8/ 0/
1 through 8/ 0/
1 through 5/ 0/
1 through 5/ 0/
Cisco 10000 Series Router Line Card Configuaration Guide
Maximum Number of VCs per Priority
SAR limit / number of PHYs / number of
priority levels
2 priority system:
65,536 / 8 / 2 = 4096 VCs per priority level
per port
Table 2-5
Port Subinterface
0 to 7 —
0.n to 7.n n = 1 to 4294967295
0 to 7 —
0.n to 7.n n = 1 to 4294967295
Interface Syntax
to identify
2-3