Routing Commands
213
ProSAFE M7100 Managed Switches
The following shows example CLI display output for the command.
(switch) #show ip helper-address 0/1
Helper IP Address.............................. 1.2.3.4
............................................... 1.2.3.5
show ip helper statistics
Use this command to display the number of DHCP and other UDP packets processed and relayed
by the UDP relay agent.
Format show ip helper statistics
Mode Privileged EXEC
Term Definition
DHCP client messages
received
The number of valid messages received from a DHCP client. The count is incremented
only if IP helper is enabled globally, the ingress routing interface is up, and the packet
passes a number of validity checks, such as having a TTL>1 and having valid source and
destination IP addresses.
DHCP client messages
r
elayed
The number of DHCP client mes
sages relayed to a server. If a message is relayed to
multiple servers, the count is incremented once for each server.
DHCP server messages
rec
eived
The number of DHCP responses received from the DHCP server. This count includes
only messages that the DHCP server unicasts to the relay agent for relay to the client.
DHCP server messages
relayed
The number of DHCP ser
ver messages relayed to a client.
UDP clients messages
rec
eived
The number of valid UDP packets received. This count includes DHCP messages and all
other protocols relayed. Conditions are similar to those for the first statistic in this
table.
UDP clients messages
r
elayed
The number of UDP pack
ets relayed. This count includes DHCP messages relayed as
well as all other protocols. The count is incremented for each server to which a packet is
sent.
DHCP message hop
c
ount e
xceeded max
The number of DHCP client messages received whose hop count is larger than the
maximum allowed. The maximum hop count is a configurable value listed in show
bootpdhcprelay. A log message is written for each such failure. The DHCP relay agent
does not relay these packets.
DHCP message with
sec
s field below min
The number of DHCP client mes
sages received whose secs field is less than the
minimum value. The minimum secs value is a configurable value and is displayed in show
bootpdhcprelay. A log message is written for each such failure. The DHCP relay agent
does not relay these packets.
DHCP message with
giaddr se
t t
o local
address
The number of DHCP client messages received whose gateway address, giaddr, is
already set to an IP address configured on one of the relay agent’s own IP addresses. In
this case, another device is attempting to spoof the relay agent’s address. The relay
agent does not relay such packets. A log message gives details for each occurrence.
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