Nov 9 2009 6:47AM GMT
Posted by: Yasir Irfan
Secure Copy,
SCP,
SSH,
SSH Protocol,
Port 22,
encrypted tunnel,
IOS transfer,
Configuration backup,
Cisco IOS 12.0(21)S,
Cisco IOS 12.2(25)S,
PIX/ASA firewalls 7.1,
FWSM 3.1,
Cisco Catalyst Switches,
Cisco Routers,
Cisco PIX/ASA TFPT,
FTP,
HTTPS,
What is Secure Copy (SCP),
secure,
authenticated,
Cisco Systems,
Cisco Tips,
Cisco Router tips,
Cisco Switches tips,
Network Tips,
Network Technologies and Trends
We are all aware of the traditional way of transferring IOS files from and to Cisco Catalyst Switches, Cisco Routers and Cisco PIX/ASA firewall devices using TFPT, FTP and lately https. However there is also one more way to copy the IOS files, which is known as Secure Copy (SCP). The Secure Copy (SCP) is a secure and authenticated method of copying a configuration file or transferring an Image files to Cisco Catalyst Switches, Cisco Routers and Cisco PIX/ASA firewall devices.
Cisco Systems introduced the Secure Copy (SCP) feature in the following IOS releases
|
Release
|
Modification
|
|
12.2(2)T
|
This feature was introduced.
|
|
12.0(21)S
|
This feature was integrated into Cisco IOS 12.0(21)S.
|
|
12.2(25)S
|
This feature was integrated into Cisco IOS 12.2(25)S.
|
PIX/ASA firewalls 7.1 and above, FWSM 3.1 and above.
The Secure Copy (SCP) works on SSH protocol on port 22 which is like an encrypted tunnel. This tool is very useful especially to transfer files for upgrades or to perform safe backups.
In my next post you will find the commands to configure SCP in a Cisco Router and Switch.
May 19 2009 5:58AM GMT
Posted by: Yasir Irfan
Cisco Systems,
Cisco 4500 Supervisor Engine 6L-E,
Cisco® Catalyst® 4500 Supervisor Engine 6L-E,
Cisco Catalyst 4500 Switch,
Supervisor Engine,
Cisco Catalyst Switches
Cisco announces the launch of new Cisco® Catalyst® 4500 Supervisor Engine 6L-E optimized for high-performance enterprise access.
The new Cisco 4500 Supervisor Engine 6L-E is a high-performance, basic Layer 3 extension to the Cisco Catalyst 4500 Series, enabling rich media collaboration and energy and operational efficiency in the wiring closet.
The supervisor engine extends the Cisco Catalyst 4500 E-Series facilitating performance, enabling services, and protecting investments for enterprises and small and medium-sized businesses (SMBs) deploying business-critical applications. The competitive pricing on the supervisor engine makes it an ideal entry-point offering.
Product Overview
The Supervisor Engine 6L-E provides a fourfold increase in per-slot switching capacity from previous-generation basic Layer 3 Cisco Catalyst 4500 supervisor engines at 24 Gbps per slot. Primary Supervisor Engine 6L-E performance features include:
• Centralized 280-Gbps switching capacity with 225 mpps of throughput
• IPv6 support in hardware, providing wire-rate forwarding for IPv6 networks
• Dynamic hardware forwarding-table allocations for easy IPv4-to-IPv6 migration
• Advanced quality of service (QoS) support with eight queues per port, dynamic queue sizing, and hierarchical policing
• Dual 10 Gigabit Ethernet uplinks (X2 optics)
Apr 17 2009 4:42AM GMT
Posted by: Yasir Irfan
VLAN Trunking Protocol,
VTP,
Cisco Proprietary,
Layer 2,
Cisco,
IEEE,
Cisco Catalyst Switches,
Switches,
VTP Overview,
What is VTP,
VTP Domain,
GVRP,
VTP Modes,
VTP Server,
VTP Client,
VTP Transparent
These days I am in Bangalore with my parents just enjoying my holidays. Guess what today night I am travelling to Singapore and Malaysia with my wife. May be I will not be in a position post more posts this month as I am relaxing and enjoying the beauty of Nature. For sure I am going to share the natural beauty with all you guys.
Mean while before departing to Singapore I thought let me continue my series on VTP , in this series let s focus on VTP modes. There three type of VTP modes
a) VTP Server
b) VTP Client
c) VTP Transparent
Apr 11 2009 9:36AM GMT
Posted by: Yasir Irfan
Cisco Systems,
Cisco Catalyst Switches,
10 Years of Cisco Catalyst Switches,
Pod Cast
Recently Cisco Systems celebrated 10 years of existence of its Cisco Catalyst Switches. In last 1 decade we have seen many series of Cisco Catalyst Switches, which dominated major companies, data centers, banks; MNCs. Cisco Catalyst Switches did dominated the major part of the middle east. Where ever I went I found Cisco Catalyst Switches. Do check this pod cast for the celebrations carried out by Cisco Systems for completing 10 Years of their Cisco Catalyst Switches.
Mar 9 2009 5:14AM GMT
Posted by: Yasir Irfan
VLAN Trunking Protocol,
VTP,
Cisco Proprietary,
Layer 2,
Cisco,
IEEE,
Cisco Catalyst Switches,
Switches,
VTP Overview,
What is VTP,
VTP Domain,
GVRP
What do you think what happens? If a new Cisco Catalyst® switch is placed between any two VTP domains, the Cisco Catalyst® switch will join the VTP domain identified by the first VTP update it receives. Just check the below example.
The VTP domain can be changed to another in a Cisco Catalyst® switch by using the CLI prompt, this is the only way you can change.
Feb 25 2009 11:23AM GMT
Posted by: Yasir Irfan
VLAN Trunking Protocol,
VTP,
Cisco Proprietary,
Layer 2,
Cisco,
IEEE,
Cisco Catalyst Switches,
Switches,
VTP Overview,
What is VTP,
VTP Domain,
GVRP
In Cisco Catalyst® switches the VTP domain can be added through CLI configuration or else it can be learnt from an adjacent VTP Cisco Catalyst® switch. Let’s see this from the below example
Switch C is added to the network connecting via a trunk port to Switch B with no VTP domain configured, in this mode when the Switch C receives the first VTP update from the adjacent Switch B , it will become the part of the VTP domain ITKE as identified in the VTP update.
Feb 23 2009 6:35AM GMT
Posted by: Yasir Irfan
VLAN Trunking Protocol,
VTP,
Cisco Proprietary,
Layer 2,
Cisco,
IEEE,
Cisco Catalyst Switches,
Switches,
VTP Overview,
What is VTP,
VTP Domain,
GVRP
In my previous post I just introduced the VLAN trunking protocol; let’s talk about the VTP domain.
The VTP domain consists of a group of logical group of Cisco Catalyst Switches that are part of the same VTP management domain. A Cisco Catalyst Switch can belong only to one VTP domain at any time,
The VTP domain is a logical group of switches that will share VLAN information. Each switch can belong only to one VTP domain in addition to sharing the VLAN information with all other Cisco Catalyst Switches in the same VTP domain. Cisco Catalyst Switches in different VTP domains drops any VTP updates received from Cisco Catalyst Switches.
Feb 21 2009 6:21AM GMT
Posted by: Yasir Irfan
VLAN Trunking Protocol,
VTP,
Cisco Proprietary,
Layer 2,
Cisco,
IEEE,
Cisco Catalyst Switches,
Switches,
VTP Overview,
What is VTP,
VTP Domain,
GVRP
What is a VLAN Trunking Protocol (VTP)?
VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2 messaging protocol that manages the addition, deletion, and renaming of VLANs for the Cisco Catalyst Switches in the same VLAN Trunking Protocol (VTP) domain. VLAN Trunking Protocol (VTP) enables Cisco Catalyst Switches to exchange and maintain consistent VLAN information amongst a group of Cisco Catalyst Switches.
For example, information for the VLAN 50 defined in Cisco Catalyst Switch A is propagated via VTP updates to all other Cisco Catalyst Switches (Switches B, C and D) in the same VTP domain, the other Cisco Catalyst Switches B, C and D will all end up adding VLAN 50 in their local VLAN data base. VTP is available on most of the Cisco Catalyst Family products.
The comparable IEEE standard in use by other manufacturers is GVRP.
Feb 19 2009 10:32AM GMT
Posted by: Yasir Irfan
Cisco Catalyst Switches,
POE,
Power over Ethernet,
CAT 5,
Cat6,
UTP,
STP,
IP Phones,
Access Points,
IP Cameras
Catalyst switches with PoE are available as 10/100 PoE or 10/100/1000 PoE. The Power over Ethernet feature is an excellent option for deployments of Cisco IP Phones. Wireless access points and IP cameras can also be powered by PoE switches. The specific technology uses the Cat5/Cat6/Cat 6e UTP/STP cable to deliver power in addition to data, thus removing the need of using power adaptors for devices.
The following Cisco Models support PoE:
- 2960
- 3750
- 3560
- 4500
- 6500
- Nexus 7000
