Dell Force10 E1200i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 945
GE WAN Physical Interface, Configuring Maximum Transmission Unit MTU
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Configuring Maximum Transmission Unit (MTU) Maximum Transmission Unit is an integer value that represents the greatest number of bytes that any given interface on the system can handle. MTU settings allow the router to determine if a large packet needs to be fragmented before transmission. PPP must be enabled on a SONET interface before MTU can become configurable. MTU size can be changed in INTERFACE mode by entering the command mtu size. interface SONET 0/0 no shutdown FTOS(conf-if-so-0/0)#encap ? ppp PPP encapsulation FTOS(conf-if-so-0/0)#encap ppp FTOS(conf-if-so-0/0)#mtu ? POS MTU size (default = 4506) FTOS(conf-if-so-0/0)#ip mtu ? Interface IP MTU (default is 1500) FTOS(conf-if-so-0/0)#ip mtu 10GE WAN Physical Interface 10GE interfaces support LAN and WAN modes. When in WAN mode, the 10GE interface operates as a SONET interface. Use the wanport command in INTERFACE mode to transition a 10GE interface into WAN mode. Note that the port must be in shutdown state before the wanport command can be executed successfully.. Note: For E-Series ExaScale systems, you must configure all the ports in a port-pipe to either WANPHY or non-WANPHY. They cannot be mixed on the same port-pipe. If you configure port 3 for example to be a WANPHY port then ports 0-4 (same port pipe) all must be WANPHY as well. Step Task Command Syntax 1 Place the port in shutdown state shutdown 2 Place the port in WAN mode wanport 3 Display the active/defective alarms show controllers tengigabitethernet slot/port Command Mode INTERFACE INTERFACE EXEC interface TenGigabitEthernet 13/0 no ip address no shutdown FTOS(conf-if-te-13/0)# FTOS(conf-if-te-13/0)#wanport % Error: Port should be in shutdown mode, config ignored Te 13/0. FTOS(conf-if-te-13/0)# FTOS(conf-if-te-13/0)#shutdown FTOS(conf-if-te-13/0)# FTOS(conf-if-te-13/0)#wanport FTOS(conf-if-te-13/0)# SONET/SDH | 945
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