In an Arp table in Telnet, how do you tell which devices are currently connected, and which have been removed?

Question

This would be for Zyxel 944, 964 and Ambit.

Answer 1

Page 1 displays the currently active ARP entries (up to a miximum of 40 entries = 20 lines, two entries per line) used by the Router. The ARP (or Address Resolution Protocol) table contains all entries for the Local LAN environment. ARP entries are refreshed every 2 minutes.

Example of page 1 display
Router Status page 1 (0010101488)

ARP table
IP MAC ST IF TTL IP MAC ST IF TTL
207.35.76.1 00d058a8ef56 OK 01 074 207.35.76.2 0050bac12c54 OK 01 076
207.35.76.3 0080c8646245 OK 01 113 207.35.76.27 00a0247020c1 OK 01 116
209.148.89.2 0004ac266297 OK 01 074 209.148.89.3 08005a3a1274 OK 01 089
209.148.89.5 00c0f00581d2 OK 01 117 209.148.89.114 00c0f005845b OK 01 037
209.148.89.158 00c0f005845b OK 01 076



Each line contains two entries across, is updated every 1 second and has the following generic entry format

IP MAC ST IF TTL
BBB.BBB.BBB.BBB CCCCCCCCCCCC DD EE FFF
Key
BBB.BBB is the IP address of a host on the local LAN in dotted decimal format.

CCCCC - is the 6 byte MAC (Media Access Control) address of the Ethernet destination displayed as 12 hexadecimal characters

DD - The ARP table entry status and may take one the following values

OK = resolved entry
WT = ARP request issued awaiting response
WR = OK entry waiting a response to an ARP after timing out.
BD = invalid entry
EE - defines the hardware interface unit as follows

WarpOne
10 = PCMCIA slot A
11 = PCMCIA slot B,
12 = PCMCIA slot C
WarpTwo
01 = LAN 0
FFF - is the ‘time to live’ (the time in seconds) before the ARP entry will expire from the ARP table and the Router will resend an ARP request to confirm the presence and MAC address of the host. Each entry in the ARP table is timed out every 120 seconds (2 minutes).

If all 40 entries have been displayed and there are additional un-displayed entries this is indicated by the text ‘….more entries’ after the last displayed ARP table entry.

Answer 2

If you ever receive an invitation to my house simply decline... You couldn't sit on the sofa, the livingroom floor, the kitchen counter, the kitchen floor, the diningroom table, the diningroom floor.. Both the bathrooms are out and don;t even think about the laundry room both the washer and the dryer are out.... You might be able to sit on the front porch but avoid the furniture and the swing they have all seen their share of sex...