iv Brocade ICX 6650 Layer 3 Routing Configuration Guide
53-1002603-01
Configuring IP parameters – Layer 3 Switches. . . . . . . . . . . . . . . . .19
Configuring IP addresses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Configuring 31-bit subnet masks on
point-to-point networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Configuring DNS resolver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Configuring packet parameters . . . . . . . . . . . . . . . . . . . . . . . . .28
Changing the router ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Specifying a single source interface for specified
packet types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
ARP parameter configuration . . . . . . . . . . . . . . . . . . . . . . . . . . .35
Configuring forwarding parameters . . . . . . . . . . . . . . . . . . . . . .40
Disabling ICMP messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Disabling ICMP redirect messages. . . . . . . . . . . . . . . . . . . . . . .44
Static routes configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Configuring a default network route. . . . . . . . . . . . . . . . . . . . . .54
Configuring IP load sharing. . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
ICMP Router Discovery Protocol configuration . . . . . . . . . . . . .58
IRDP parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
Reverse Address Resolution Protocol configuration . . . . . . . . .61
Configuring UDP broadcast and IP helper parameters . . . . . . .62
BootP and DHCP relay parameter configuration. . . . . . . . . . . .65
DHCP Server. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .67
Displaying DHCP Server information . . . . . . . . . . . . . . . . . . . . .78
DHCP Client-Based Auto-Configuration and flash
image update. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Configuring IP parameters – Layer 2 Switches. . . . . . . . . . . . . . . . .88
Configuring the management IP address and specifying
the default gateway . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
Configuring Domain Name Server resolver . . . . . . . . . . . . . . . .89
Changing the TTL threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
DHCP Assist configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91
IPv4 point-to-point GRE tunnels. . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
IPv4 GRE tunnel overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .95
GRE packet structure and header format . . . . . . . . . . . . . . . . .95
Path MTU Discovery (PMTUD) support. . . . . . . . . . . . . . . . . . . .96
Configuration considerations for PMTUD support. . . . . . . . . . . 97
Support for IPv4 multicast routing over GRE tunnels . . . . . . . .97
GRE support with other features . . . . . . . . . . . . . . . . . . . . . . . .98
Configuration considerations for GRE IP tunnels . . . . . . . . . . . 98
Configuration tasks for GRE tunnels . . . . . . . . . . . . . . . . . . . .100
Point-to-point GRE tunnel configuration example . . . . . . . . . .107
Displaying GRE tunneling information . . . . . . . . . . . . . . . . . . .108
Clearing GRE statistics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .112
Displaying IP configuration information and statistics. . . . . . . . . .113
Changing the network mask display to prefix format . . . . . . .113
Displaying IP information – Layer 3 Switches . . . . . . . . . . . . .113
Displaying IP information – Layer 2 Switches . . . . . . . . . . . . .128