NacTrack
FRRequest access

Tools

Everyday questions: where is this address, which way does this traffic go, what changed.

Manual contents

At a glance

  1. WhereTools menu.
  2. AccessCore module and troubleshooting permission; path analysis also needs the traceroute one.
  3. DataThe collected tables: interfaces, ARP, MAC, neighbours and routes.
/troubleshooting/macfinder
MAC Finder on an address from the demo estate.

What the screen shows

IP Finder

An IPv4, an IPv6, a CIDR or a wildcard like 10.0.0.*. Results are grouped by source: ports, inventory, ARP, IPv6 neighbours, F5, BRAS, customer IPs, CDP, LLDP, IS-IS, BGP neighbours, static, IS-IS and BGP routes.

MAC Finder

A MAC in any form, an IP or text, wildcards accepted: NacTrack chains IP, ARP or NDP, MAC table and port, with VLAN, interface, device, type and age.

Path Analysis (BETA)

Traceroute: the path computed from the collected tables, compared with a live traceroute over SSH. VLAN Continuity: where a VLAN goes and where it stops.

Changes and configurations

Change Tracker lists what changed from one collection to the next; Config Compare compares two snapshots of a device; Config Search finds text across every configuration; Anomalies flags what is out of the ordinary.

What you can do

  1. 1

    Find an endpoint

    MAC Finder, paste the address, read the port and VLAN.

  2. 2

    Compare two configurations

    Config Compare: pick the device, snapshot A and snapshot B, the commands to compare, tick Show only changes.

Limits and things to know

No vendor lookup by MAC

MAC Finder does not give the network card's maker.

Read next

How-to guide

How to find which switch and port a MAC address is on

A user reports a problem and all you have is a MAC address. Search every MAC table at once and get the device, the interface and the VLAN.

How-to guide

How to find where an IP address lives on the network

Give IP Finder an address and it searches every collected source, ARP tables, inventory and neighbours, then says which device holds it.

How-to guide

How to find out what changed on the network between two collections

Compare two collections and see exactly what moved, on which device and on which line, when nobody is admitting they touched anything.

How-to guide

How to tell whether an IP belongs to a user device or to network equipment

IP Finder heads each block of results with the source that matched, and that heading tells you whether the address is an endpoint or a device.

Next chapter

Users, roles, tenants

ContinueManual contents