IP Routing Features
Configuring DHCP Relay
the sequential index number for that port position in the slot. (To view the
Index number assignments for ports in the routing switch, use the walkmib
ifname command.)
For example, the Circuit ID for port B11 on a ProCurve switch is “35”. (See
Figure 5-65, below.)
ProCurve# walkmib ifname
ifName.1 = A1
In this example, the switch has a 4-port module
installed in slot “A” and a 24-port module installed in
ifName.2 = A2
slot “B”. Thus, the first port numbers in the listing are
ifName.3 = A3
the Index numbers reserved for slot “A”. The first Index
ifName.4 = A4
port number for slot “B” is “25”, and the Index port
ifName.25 = B1
number for port B11 (and therefore the Circuit ID
ifName.26 = B2
number) is “35”.
ifName.27 = B3
ifName.28 = B4
ifName.29 = B5
ifName.30 = B6
ifName.31 = B7
ifName.32 = B8
ifName.33 = B9
ifName.37 = B13
ifName.38 = B14
ifName.39 = B15
ifName.40 = B16
ifName.41 = B17
ifName.42 = B18
ifName.43 = B19
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ifName.34 = B10
ifName.35 = B11
ifName.36 = B12
The Index (and Circuit ID) number for port B11
on the routing switch.
Figure 5-65. Using Walkmib To Determine the Circuit ID for a Port on a ProCurve Chassis
For example, suppose you wanted port 10 on a given relay agent to support
no more than five DHCP clients simultaneously, you could configure the server
to allow only five IP addressing assignments at any one time for the circuit ID
(port) and remote ID (MAC address) corresponding to port 10 on the selected
relay agent.
Similarly, if you wanted to define specific ranges of addresses for clients on
different ports in the same VLAN, you could configure the server with the
range of IP addresses allowed for each circuit ID (port) associated with the
remote ID (IP address) for the selected VLAN.
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