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USER’S GUIDE
382 CyberSWITCH
IP ADDRESS POOL
As IP addresses are obtained from DHCP servers, they are placed into the system’s IP Address
Pool. To verify the presence of these DHCP-obtained IP addresses, perform the following:
1. Examine the address pool. Type:
ip addrpool
<return>
2. Look for addresses with an origin of DHCP. This verifies that IP addresses were obtained from
a DHCP server, and the Proxy Client is working correctly.
3. If no “DHCP-obtained” addresses are present in the IP Address Pool, refer to Proxy Client
Operation in the Problem Diagnosis chapter.
VERIFYING A SEMIPERMANENT CONNECTION
Follow the same procedure outlined in the dial out verification section. If you can successfully use
the call device command to call the device assigned to the semipermanent connection, then the
connection is working. If not, follow the instructions actions in the dial out verification section.
VERIFYING PROXY ARP IS OPERATIONAL
Use the following graphic to help you in verifying that Proxy ARP is operational. When following
the steps below, substitute your addresses for the addresses used in the example.
1. Create two Ethernet LANs connected across the WAN with a CyberSWITCH and a second
Cabletron platform (for example, another CyberSWITCH product) properly configured. The
two Ethernet segments should be subnets of the same IP network. All IP host devices on the
Ethernet segments (except the CyberSWITCH and the other Cabletron platform) should be
configured with the natural subnet mask so that both Ethernet segments look like one IP
network to all the IP host devices on the segments.
2. Try to have an IP host device on one Ethernet segment communicate with an IP host device on
the other Ethernet segment. For example, ping from Host A to Host B.
ISDN
CSX1200
"Site1"
CSX1200
"Site2"
Host A: 128.168.1.2
Host B: 128.168.2.2
128.168.1.x
128.168.2.x
WORKGROUP REMOTE ACCESS SWITCH
LAN
10BASE-TRXTXSERVICE
CH-2
D-CH
CH-1
SYNC
POWER
LINE
1
CH-2
D-CH
CH-1
SYNC
LINE
2
CH-2
D-CH
CH-1
SYNC
LINE
3
CH-2
D-CH
AGI
CH-1
SYNC
LINE
4
WORKGROUP REMOTE ACCESS SWITCH
LAN
10BASE-TRXTXSERVICE
CH-2
D-CH
CH-1
SYNC
POWER
LINE
1
CH-2
D-CH
CH-1
SYNC
LINE
2
CH-2
D-CH
CH-1
SYNC
LINE
3
CH-2
D-CH
AGI
CH-1
SYNC
LINE
4