Cabletron Systems 1800 - Manual (Page 229)

Configuring IP Routing 14-13
PVC Connection
simply states whether this interface is a PVC.
Descriptions of Parameters Specific to LAN Interfaces
Source IP Address
is the IP address of the end-to-end sender. The valid range of values guarantees that
you cannot configure all
0 s or all 1 s for a network ID, node ID, or subnet ID. (See page
14-1 .)
Network Mask
is used during routing to determine the portion of the address associated with the
network and subnetwork (if any). All bits associated with the network/subnet should
be set to
1 , and must be contiguous.
Broadcast Address
is used to send to all LAN hosts on the network.
Proxy ARP Enabled
Determines whether Proxy ARP will be supported on the Ethernet interface. Proxy
ARP allows the SmartSwitch to respond to ARP requests on one subnet for a host on
another subnet. This lets the device that sent the ARP request think the SmartSwitch
is the destination host.
If an ARP request is received, the IP function in the SmartSwitch 1800 checks the
address against the
Source IP Address configured on the IP interface. Then:
●
If the addresses match, a reply will be sent.
●
If the addresses do not match, and Proxy ARP is not enabled, no response will
be sent.
●
If the addresses do not match, and Proxy ARP is enabled, the IP function will
check to see if the SmartSwitch has a route to the host or the host’s network. If
there is a route, and the route is reachable, and the route is not on the same
interface on which the ARP request was received, an ARP response will be sent.
Secondary Address Parameters
Seq
is simply a sequence number to identify the entry.
Sec. IP Addr
specifies a secondary IP address. The valid range of values guarantees that you cannot
configure all
0 s or all 1 s for a network ID, node ID, or subnet ID. (See page 14-1 .)
NetMask
is the sub-network mask for the secondary IP address. The mask is used during routing
to determine the portion of the address associated with the sub-network. All network
bits are set to
1 and must be contiguous.
Bcast Addr
is the broadcast address associated with the secondary IP address. This address is used
to send to all LAN hosts on the sub-network.