Foundry Networks Switch and Router Installation And Configuration Manual page 182

Foundry Switch and Router Installation and Configuration Guide
USING THE CLI
To configure two POS ports on a single POS module into a trunk group, enter a command such as the following:
BigIron(config)# trunk pos 1/1 to 1/2
This command configures the ports on a POS module in slot 1 into a trunk group. Port 1/1 is the primary port. To
make configuration changes to the trunk group, make the changes on the primary port. The software
automatically applies the changes to the other port(s).
To configure a multi-slot trunk group, enter commands such as the following:
BigIron(config)# trunk pos 1/1 to 1/2 pos 3/1 to 3/2
BigIron(config)# write memory
BigIron(config)# end
BigIron# reload
The first command configures the POS ports on the modules in slots 1 and 3 into a single, multi-module trunk
group. The lowest numbered port is always the primary port. The other commands save the configuration change
to the startup-config file, then reload the software. You must save the configuration changes and reload the
software to place a trunk group configuration change into effect.
Syntax: [no] trunk [server | switch] pos <portnum> to <portnum> [pos <portnum> to <portnum>]
The server | switch parameter indicates the trunk group type. Since the POS ports in the trunk group will be
connected to POS ports on another chassis, the type is always switch. This is the default, so you do not need to
specify it.
The pos <portnum> to <portnum> parameter specifies the port range. Always specify the primary port first. To
configure a multi-module trunk group, repeat the parameter for the port range on the second module.
The configuration rules for POS ports are the same as the rules for Ethernet ports.
• Each group consists of a primary port and consecutively numbered secondary ports. Always specify the
lowest numbered port first (the primary port) followed by the other ports in ascending numerical order. On a
two-port POS module, the first port on the module is the primary port and the second port is the secondary
port. When you configure interface parameters for a trunk group, configure them on the primary port. The
software then applies the changes to all the secondary ports automatically.
• You can configure ports on two POS modules in a chassis as a single, multi-module trunk group. In a multi-
slot trunk group, the port with the lowest port number (the first port in the lower numbered chassis slot) is
always the primary port. The trunk group must contain the same number of ports from each module. In
addition, the modules must be the same type (for example, two 622 Mbps modules).
• You cannot mix POS ports and Ethernet ports in the same trunk group.
• All the ports in the trunk group must be connected to a single trunk group on the other chassis.
• You must save the trunk group configuration to the startup-config file, then reload the software to place the
trunk group configuration into effect. The trunk group does not take effect until you reload the software.
To verify the trunk configuration, enter the show trunk command.
Displaying Layer 2 POS Port Information
To display detailed information for a POS port, enter a command such as the following at any level of the CLI:
BigIron(config)# show interface pos 2/1
POS2/1 is up
No port name
Hardware is Packet over Sonet
MTU 4470 bytes, encapsulation PPP, clock is internal
Framing is SONET, BW 622000Kbit, CRC 32
Loopback not set, keepalive is set (10 sec), scramble disabled
LCP state is open
5 minute input rate: 0 bits/sec, 0 packets/sec
6 - 20 December 2000