Cisco Systems OL-7396-01 Manual De Usuario
7-83
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 7
Configuring Virtual Connections
Configuring VP Tunnels
Displaying the Shaped VP Tunnel Configuration
To display the shaped VP tunnel interface configuration, use the following EXEC command:
For an example display from the show atm interface command, see
.
Configuring a Hierarchical VP Tunnel for Multiple Service Categories
This section describes configuring a hierarchical VP tunnel for multiple service categories with
rate-limited tunnel output.
rate-limited tunnel output.
A hierarchical VP tunnel allows VCs of multiple service categories to pass through the tunnel. In
addition, the overall output of the VP tunnel is rate-limited to the PCR of the tunnel. There is no general
limit on the number of connections allowed on a such a tunnel. Hierarchical VP tunnels can also support
merged VCs for tag switching. See
addition, the overall output of the VP tunnel is rate-limited to the PCR of the tunnel. There is no general
limit on the number of connections allowed on a such a tunnel. Hierarchical VP tunnels can also support
merged VCs for tag switching. See
Service categories supported include the following:
•
Constant bit rate (CBR)
•
Variable bit rate (VBR)
•
Available bit rate (ABR) with a nonzero minimum cell rate (MCR)
•
Unspecified bit rate (UBR+) with a nonzero MCR
Note
Hierarchical VP tunnels are supported only on systems with the FC-PFQ feature card.
(Catalyst 8510 MSR and LightStream 1010)
(Catalyst 8510 MSR and LightStream 1010)
While capable of carrying any traffic category, a hierarchical VP tunnel is itself defined as CBR with a
PCR. The following limitations apply on the Catalyst 8540 MSR:
PCR. The following limitations apply on the Catalyst 8540 MSR:
•
Hierarchical VP tunnels can be defined only on interfaces in slots 0, 2, 9, and 11.
•
For carrier module port adapters, interfaces 0/x/y, 2/x/y, 9/x/y, and 11/x/y can each support 30
hierarchical VP tunnels, for a combined total of 120. For OC-12 full-width modules, ports 0/0/[0-1],
0/0/[2-3], 2/0/[0-1], 2/0/[2-3], 9/0/[0-1], 9/0/[2-3], 11/0/[0-1], and 11/0/[2-3] can each support 30
hierarchical VP tunnels, for a combined total of 240.
hierarchical VP tunnels, for a combined total of 120. For OC-12 full-width modules, ports 0/0/[0-1],
0/0/[2-3], 2/0/[0-1], 2/0/[2-3], 9/0/[0-1], 9/0/[2-3], 11/0/[0-1], and 11/0/[2-3] can each support 30
hierarchical VP tunnels, for a combined total of 240.
The following limitations apply on the Catalyst 8510 MSR and LightStream 1010:
•
A maximum of 30 hierarchical VP tunnels can be defined on interfaces 0/0/x and 3/0/x. A maximum
of 30 hierarchical VP tunnels can be defined on interfaces 0/1/x and 3/1/x.
of 30 hierarchical VP tunnels can be defined on interfaces 0/1/x and 3/1/x.
•
Hierarchical VP tunnels can be defined only on interfaces in slots 0 and 3.
The following limitations apply on the Catalyst 8540 MSR, Catalyst 8510 MSR and LightStream 1010:
•
Only hierarchical VPs are allowed on the interface (not other VCs or VPs).
•
Bandwidth allocated on output to a hierarchical VP cannot be used by another hierarchical VP.
Command
Purpose
show atm interface atm
card/subcard/port.vpt#
card/subcard/port.vpt#
Shows the ATM VP interface configuration.