Network port(s) running in low speed-cisco-asa
Vendor: cisco
OS: asa
Description:
Indeni will alert one or more network ports is running in a speed lower than 1000Mbps.
Remediation Steps:
Many times ports are in a low speed due to an autonegotation error or a misconfiguration.
|
|1. Use the “show interface” NX-OS command to display speed and duplex settings of an interface.
|2. Use the “show interface status” and “show interface capabilities” NX-OS commands to gather more information about ports.
|3. You can disable link negotiation using the “no negotiate auto” command. Use the “negotiate auto” command to enable auto negotiation on 1-Gigabit ports when the connected peer does not support auto negotiation. By default, auto-negotiation is enabled on 1-Gigabit ports and disabled on 10-Gigabit ports.
|4. Cisco does not recommend to enable auto negotiation on 10-Gigabit ports. Enabling auto-negotiation on 10-Gigabit ports brings the link down. By default, link negotiation is disabled on 10-Gigabit ports.
|NOTE: A shut and no shut to the interface may be required after the aforementioned configuration change.
How does this work?
This script retrieves the interface speed by polling ifTable via SNMP.
Why is this important?
If the interface speed is set to a low value, this could mean auto-negotiation is not working correctly and the interface does not utilize the full bandwidth available.
Without Indeni how would you find this?
It is possible to poll this data through SNMP.
cisco-asa-interfaces
name: cisco-asa-interfaces
description: Fetch interface metrics for ASA device
type: monitoring
monitoring_interval: 1 minute
requires:
vendor: cisco
os.name: asa
snmp: true
comments:
network-interface-mtu:
why: |
The Maximum Transmission Unit (MTU) is the maximum frame size that can be sent between two hosts without fragmentation.
how: |
This script retrieves the interface MTU Setting by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-speed:
why: |
If the interface speed is set to a low value, this could mean auto-negotiation is not working correctly and the interface does not utilize the full bandwidth available.
how: |
This script retrieves the interface speed by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-mac:
why: |
A media access control address (MAC address) is a unique identifier assigned to a network interface.
how: |
This script retrieves the interface MAC Address by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-admin-state:
why: |
If an interface is disabled and it is a member of a Port Channel, then the link might be running at reduced capacity.
how: |
This script retrieves the interface administrative state by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-state:
why: |
Interfaces that should be UP and are DOWN can reduce the resiliance of the systems and cause service disruption.
how: |
This script retrieves the interface state by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-rx-bits:
why: |
Capture the interface Received bits counter. Knowing the amount of bits and packets flowing through an interface can help estimate an interface's performance and utilization.
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-rx-packets:
why: |
Capture the interface Received Packets counter. Knowing the amount of bits and packets flowing through an interface can help estimate an interface's performance and utilization.
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-rx-dropped:
why: |
Capture the interface Receive Drop counter. Packet loss may have severe impact to the traffic utilization (retransmission for TCP apps) and to the performance of the applications
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-rx-errors:
why: |
Capture the interface Receive Errors counter. Receive errors coould indicate an issue with duplex/speed matching.
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-tx-bits:
why: |
Capture the interface Transmit bits counter. Knowing the amount of bits and packets flowing through an interface can help estimate an interface's performance and utilization.
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-tx-packets:
why: |
Capture the interface Transmit Packets counter. Knowing the amount of bits and packets flowing through an interface can help estimate an interface's performance and utilization.
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-tx-dropped:
why: |
Capture the interface Transmit Drop counter. Packet loss may have severe impact to the traffic utilization (retransmission for TCP apps) and to the performance of the applications
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
network-interface-tx-errors:
why: |
Capture the interface Transmit Errors counter. Transmit errors coould indicate an issue with duplex/speed matching.
how: |
This script retrieves the interface statistics by polling ifTable via SNMP.
can-with-snmp: true
can-with-syslog: false
steps:
- run:
type: SNMP
command: GETTABLE 1.3.6.1.2.1.2.2
parse:
type: AWK
file: asa-interfaces.parser.1.awk
cross_vendor_network_port_speed_low
Failed to fetch the data: https://bitbucket.org/indeni/indeni-knowledge/src/master/rules/templatebased/crossvendor/cross_vendor_network_port_speed_low.scala