carlproject has written 19 posts for #carlproject.com


It’s been a while (it’s been years)…yes, it was because of another transition… Advertisements

Turrets and Hoot and Holler Information

IPC Turret (Note 1) and (Note 2) Cisco Hoot and Holler

Catalyst 6500 Series Troubleshooting Notes

» Troubleshooting Hardware and Common Issues on Catalyst 6500/6000 Series Switches Running Cisco IOS System Software » Common CatOS Error Messages on Catalyst 6500/6000 Series Switches » Buffers, Queues & Thresholds on Catalyst 6500 Ethernet Modules » Catalyst 6500 Series Cisco IOS System Message Guide – Message and Recovery Procedures

Cisco Unified Communication Manager History

1994: Multimedia Manager Started in 1994 by Selsius Systems, was called Multimedia Manager 1.0. It was developed in HP-UX using the SDL-88 programming language but was intended to run on Microsoft Windows NT 3.51. Each Multimedia Manager server served only as a call signaling source and destination. Multimedia Manager 1.0 managed connections by sending commands to … Continue reading

TCP/IP and TCPdump Quick Reference Guide from SANS

This is a quick reference guide of the TCP/IP headers created by SANS. Helps when decoding packets captured by tcpdump. Reference: » TCP/IP and TCPdump Quick Reference Guide (pdf)

Troubleshooting for 10/100/1000 Mbps NICs Autonegotiation

Just a quick note: Reference: Troubleshooting Cisco Catalyst Switches to NIC Compatibility Issues PDF copy from Cisco

Cisco and Juniper DSU Compatibility Mode

Cisco DS3(T3) DSu Compatibility Mode Option Mode 0 : Digital Link DSU (DL3100) [default] Mode 1 : Kentrox DSU Mode 2 : Larscom DSU Mode 3 : Adtran T2SU 300 Mode 4 : HDM 2182 Juniper DS3(T3) DSU Compatibility Mode Option None Larscom (Mode 2) Kentrox Digital-Link (Mode 0) Juniper References: » Interfaces Monitoring and … Continue reading

Ethernet Protocol Overhead Notes

Found this Ethernet info, another note to remember: Ethernet frame format: 6 byte dest addr 6 byte src addr [4 byte optional 802.1q VLAN Tag] 2 byte length/type 46-1500 byte data (payload) 4 byte CRC Ethernet overhead bytes: 12 gap + 8 preamble + 14 header + 4 trailer = 38 bytes/packet w/o 802.1q 12 … Continue reading

How to install the MS Loopback adapter in Windows XP

A quick note on how to install a MS loopback adapter. The Microsoft Loopback adapter is a testing tool for a virtual network environment where network access is not available. Also, you must use the Loopback adapter if there are conflicts with a network adapter or with a network adapter driver. You can bind network … Continue reading

IP Telephony Endpoints

Major IP Telephony Endpoints (my quick notes) » Analog Gateways » Cisco Unified IP Phones » Software-Based Endpoints » Wireless Endpoints » Cisco IP Conference Station » Video Endpoints Reference: » IP Telephony Endpoints

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