Cisco Cisco IOS Software Releases 12.2 B

When you flap an ATM subinterface that has traffic shaping enabled, the NRP-2SV SAR can fail. If 
this occurs, all sessions will eventually timeout and disconnect. This issue can also occur when you 
change vc-class parameters. If you use traffic shaping and you need to change configurations related 
to virtual circuits with traffic shaping configured, you must shutdown the ATM main interface, make 
your configurations changes, then bring up the ATM main interface.

The following sections contain important notes about Cisco IOS Release 12.2(2)B7 that can apply to the 
Cisco 6400 aggregator.

 shows the number of sessions and tunnels supported for the NRP modules in Cisco IOS 

Release 12.2(2)B7. While using NRP-SSG, Cisco IOS Release 12.2(2)B7 supports the number of 
sessions and tunnels shown in 

.

L2TP PPPoA

1700

300

8000

2000

L2TP PPPoE

2000

300

8000

2000

L2TP Tunnel Switch PPPoA

940

50 Ingress
10 Egress

L2TP Tunnel Switch PPPoE

940

50 Ingress
10 Egress

PPPoA

2000

—

8000

—

PPPoE

2000

—

8000

—

PPP Autosense

2000

—

4000

—

RBE

2000

—

8000

—

RFC 1483 IP Routed

2000

—

8000

—

RFC1483 MPLS VPN

—

—

4000

500

RBE MPLS VPN

—

—

4000

500

L2TP PPPoA

700

100

4000

2000

L2TP PPPoE

700

100

4000

2000

PPPoA

2000

—

8000

—