---
# System prepended metadata

title: Prbolem about IP/MAC address of SiTCP
tags: [DeWei, TestReport]

---

# Prbolem about IP/MAC address of SiTCP

## Background
* SiTCP Default IP address: 192.168.10.16
* Our Switch: Zyxel, HP ...etc. general(common) 1Gbps Switch
  * New Switches, we bought after 2012

## Test with `ping` and `arp`

![](https://i.imgur.com/VKKPTik.png)
* `ping`: No response
* `arp -a`: Found IP address, but its MAC address shows `<incomplete>`????

## When I change switch with old one
Old Switch(100M/10M)
![](https://i.imgur.com/VzVzhV6.png)
Connect to board
![](https://i.imgur.com/d20Evlr.png)

* `ping`: OK
  * ![](https://i.imgur.com/7o1RncZ.png)
* `rbcp` Write Byte to address: OK
  * ![](https://i.imgur.com/rfQ4WEC.png)
* `arp -a`: MAC address appeared???????????
  * ![](https://i.imgur.com/zDuuIF7.png)

That's too strange!

## Summery
![](https://i.imgur.com/aHJyjGZ.png)

###### tags: `TestReport` `DeWei`