Cisco Systems OL-7396-01 Manual De Usuario
7-90
ATM Switch Router Software Configuration Guide
OL-7396-01
Chapter 7
Configuring Virtual Connections
Configuring Interface and Connection Snooping
Snooping Test Ports (Catalyst 8510 MSR and LightStream 1010)
With the FC-PCQ installed, only the highest port on the last module in the ATM switch router can be
configured as a snoop test port.
configured as a snoop test port.
the various port adapter types. If you specify an incorrect snoop test port for the currently installed port
adapter type, an error appears on the console. The feature card per-class queuing (FC-PCQ) also does
not support per-connection snooping.
adapter type, an error appears on the console. The feature card per-class queuing (FC-PCQ) also does
not support per-connection snooping.
The port number of the test port depends on the card type.
lists the allowed snoop test port
number for the supported interfaces.
Effect of Snooping on Monitored Port
There is no effect on cell transmission, interface or VC status and statistics, front panel indicators, or
any other parameters associated with a port being monitored during snooping. Any port, other than the
highest port, that contains a port adapter type with a bandwidth less than or equal to the port adapter
bandwidth for the test port can be monitored by snooping.
any other parameters associated with a port being monitored during snooping. Any port, other than the
highest port, that contains a port adapter type with a bandwidth less than or equal to the port adapter
bandwidth for the test port can be monitored by snooping.
Shutting Down Test Port for Snoop Mode Configuration
The port being configured as a test port must be shut down before configuration. While the test port is
shut down and after snoop mode has been configured, no cells are transmitted from the test port until it
is reenabled using the no shutdown command. A test port can be put into snoop mode even if there are
existing connections to it; however, those connections remain “Down” even after the test port is
reenabled using the no shutdown command. This includes any terminating connections for ILMI, PNNI,
or signalling channels on the test port.
shut down and after snoop mode has been configured, no cells are transmitted from the test port until it
is reenabled using the no shutdown command. A test port can be put into snoop mode even if there are
existing connections to it; however, those connections remain “Down” even after the test port is
reenabled using the no shutdown command. This includes any terminating connections for ILMI, PNNI,
or signalling channels on the test port.
If you use a show atm interface command while the test port is enabled in snoop mode, the screen shows
the following:
the following:
•
Interface state appears as “Snooping” instead of “up” or “down.”
•
Other ATM layer information for the test port is still displayed.
•
Any previously configured connections on the test port remain installed, but are listed as Connection
Status = down.
Status = down.
•
Data for transmitted cells and output rates indicates the snooping cells are being transmitted.
•
Counts for receive cells should remain unchanged and the input rate should be 0.
Table 7-4
Allowed ATM Snoop Ports with FC-PCQ
Interface Port
Number
25-Mbps
4/1/11
1
1.
Both transmit and receive interfaces must be on 25-Mbps port adapters.
OC-3 4/1/3
OC-12 4/1/0
DS3/E3 Not
supported
CES
Not supported