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Cisco Content Services Switch Administration Guide
OL-5647-02
Chapter 4 Using the CSS Logging Features
Frequently Queried Log Messages
IPV4-4: Ipv4SfmArpTx: unknown
circuit in buffer (2001)
An ARP TX task is running on the
SFM, receiving packets from the SFM
and transmitting them to the proper
egress ports. This message includes the
circuit number (2001, in this example).
If the circuit number for this ARP was
down or inactive while the ARP was
still being queued in the SFM, the
message would appear in the log. An
action caused the circuit to be removed
while data for the circuit was still in the
buffer.
Determine whether all physical
interfaces in a circuit VLAN are going
up and down, or a configuration change
occurred on the VLAN at the time of
the message.
IPV4-4: Ipv4SfmForwRx: bad IP
version received (0)
The IPV4 receive task received a
packet and the IP version is displayed
in parentheses (). The CSS discards
any packet that is not Ipv4 version 4. In
this example, the IP version is 0. If you
see many of these messages, the
problem could be an improperly
configured device or a DoS attack.
IPV4-4: Ipv4SfmForwTx: No VC for
buffer (0x00000000)
The IPV4 transmit task has a buffer to
transmit to the switch fabric processor,
however the CSS still needs to create
the Virtual Circuit to the fastpath. This
message typically occurs if the CSS
Ethernet port changes state.
This is an informational message. No
further action is required.
Table 4-8
Cisco 11500 Series CSS Log Messages (continued)
Log Message (sys.log: Subsystem
Name, Level, and Message)
Cause and Resolution
