Brocade Communications Systems FastIron X Series User Manual

2. Use the show ip dns-server server-address command to display the list of DNS server address congured on the device.
device# show ip dns-server server-address
IPV4 DNS server address:
1. 10.157.22.199
2. 10.96.7.15
3. 10.95.7.25
4. 10.98.7.15
3. Use the show ip dns-server domain-list command to display the domain list.
device# show ip dns-server domain-list
DNS Domain-list
1 mycompany.com
4. Use the show ip dns-server command to display the DNS server information.
switch(mode)# show ip dns-server
dns-server Show DNS Server info
DNS Server information
DNS Domain-list
1 mycompany.com
IPV4 DNS server address:
1. 10.157.22.199
2. 10.96.7.15
3. 10.95.7.25
4. 10.98.7.15
IPV6 DNS server address:
NO ipv6 DNS server address is not configured
Conguring packet parameters
You can congure the following packet parameters on Layer 3 switches. These parameters control how the Layer 3 switch sends IP
packets to other devices on an Ethernet network. The Layer 3 switch always places IP packets into Ethernet packets to forward them on
an Ethernet port.
• Encapsulation type - The format for the Layer 2 packets within which the Layer 3 switch sends IP packets.
• Maximum Transmission Unit (MTU) - The maximum length of IP packet that a Layer 2 packet can contain. IP packets that are
longer than the MTU are fragmented and sent in multiple Layer 2 packets. You can change the MTU globally or an individual
ports:
– Global MTU - The default MTU value depends on the encapsulation type on a port and is 1500 bytes for Ethernet II
encapsulation and 1492 bytes for SNAP encapsulation.
– Port MTU - A port default MTU depends on the encapsulation type enabled on the port.
Changing the encapsulation type
The Layer 3 switch encapsulates IP packets into Layer 2 packets, to send the IP packets on the network. (A Layer 2 packet is also called
a MAC layer packet or an Ethernet frame.) The source address of a Layer 2 packet is the MAC address of the Layer 3 switch interface
sending the packet. The destination address can be one of the following:
• The MAC address of the IP packet destination. In this case, the destination device is directly connected to the Layer 3 switch.
• The MAC address of the next-hop gateway toward the packet destination.
• An Ethernet broadcast address.
The entire IP packet, including the source and destination address and other control information and the data, is placed in the data
portion of the Layer 2 packet. Typically, an Ethernet network uses one of two
dierent formats of Layer 2 packet:
• Ethernet II
Conguring IP parameters - Layer 3 switches
FastIron Ethernet Switch Layer 3 Routing
53-1003627-04 45

Brocade Communications Systems FastIron X Series Specifications

General

Brand	Brocade Communications Systems
Model	FastIron X Series
Category	Switch
Language	English