Brocade Network Advisor IP User Manual v12.3.0 - Manual (Page 612)

560 Brocade Network Advisor IP User Manual
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Ethernet fabric traceroute
15
Interface error types
Table 54 describes the interface counters that System Monitor monitors on external interfaces.
NOTE
The default settings for the above high threshold, above low threshold, below high threshold, and
below low threshold actions are None.
Ethernet fabric traceroute
NOTE
All nodes in the VCS cluster must have the NETCONF interface availability for L2TraceRoute and must
be running Network OS 3.0.0 or later.
Traceroute diagnostics enables you to determine the connectivity, path, and reachability of the
Ethernet fabric between a source port and a destination port within an individual VCS fabric. You
can perform traceroute diagnostics from any RBridge where the source MAC address is learned in
the VCS cluster and that RBridge becomes the starting node for the traceroute packet. Once
configured, the traceroute request identifies the Equal Cost Multi-Path (ECMP) path a packet takes
from the source address to a destination address. Traceroute performs a hop-by-hop inspection
between two end-device MAC addresses to identify the traffic loss and any points of congestion in
the path.
Tracing Ethernet fabric routes
1. To diagnose traceroute, you can do either of the following:
• Select Monitor > Diagnostics > Traceroute.
TABLE 54 Interface errors monitored by System Monitor
Interface error Description Port Fence
support Threshold
defaults
CRC Align Errors The total number of frames received that had a
length (excluding framing bits but including Frame
Check Sequence (FCS) octets) of from 64 through
1518 octets. The error indicates either a bad FCS
with an integral number of octets (an FCS error) or a
bad FCS with a non-integral number of octets (an
Alignment error). No Low 12
Buffer 0
High 300
RX Symbol Error The interface detects an undefined (invalid) symbol
received. Large symbol errors indicate a bad device,
cable, or hardware. No Low 0
Buffer 0
High 5
RX IFG Violated A minimum-length interframe gap (IFG) between
successive frames is violated. A typical IFG is 12
bytes. Yes Low 5
Buffer 0
High 100
RX Missing Termination
Characters The number of frames that terminated by anything
other than the Terminate character; this includes
termination due to the Error character. No Low 12
Buffer 0
High 300