Welcome to our home of technology and Thank You for visiting. I am sure you are not wasting your time. My name is Laxmidhar Barik from Odisha, India. I have been working in the Networking sector for a decade and I have worked for many ASNs. Currently, I work as a NetworkOperation Lead for my company REDWAN Telecom. As… Read More »
I was troubleshooting an enterprise network for slowness the speed. So when I went through the troubleshooting steps I found that there is an IPv6 and IPv4 unknown unicast flooding that occurs in the Lan interface. it’s a medium enterprise where they have almost 400 end hosts including telephone and IP cameras as well. find the picture given… Read More »
you can configure the bandwidth shaping per IP in cisco gear but the problem is that you will not be able to shape the upload speed of a customer in cisco catalysts series devices. and in the catalyst series, you cant configure the service policy as input. Step-1## Create the ACL to match the IP. Step-2## Create the… Read More »
Cisco IOS Implementations Cisco IOS implements policing/marking functionality with two unrelated mechanisms: The rate-limit command implements per-interface input- and output-rate limiting. The police command implements the traffic measurement within the scope of the Modular QoS Command Line Interface (MQC). Rate-limit commands and QoS policy-maps containing the police command can measure inbound or outbound packets on physical or logical interfaces (tunnels, subinterfaces). They introduce no delay (apart from… Read More »
When Internet Service Providers (ISP) gives a new internet link , very often they have shaping rules on their router to regulate internet traffic at promised rate. If your firewall/router/switch is sending more excessive traffic than promised rate, the packet will be dropped by ISP router, then ends up with suboptimal performance and slow internet speed. in this… Read More »
in this method, you can shape the customer’s download speed and also upload speed as well . This is the best method I have ever experienced in cisco gear. ###Match the Vlan you want to shape. ##Once you will match the VLAN and then create a policy map and assign the bandwidth.
In the Cisco IOS on a Catalyst switch (not on a router), there’s an Interface Mode command called shape round-robin queue bandwidth. More specifically, the command is srr-queue bandwidth. This command has been around since IOS 12.2(25). For these examples, I’m using a Cisco Catalyst 2960 switch. Entering the command appended with a question mark will display the command options. Here’s… Read More »
The 16-bit subnet ID section of the IPv6 global unicast address can be used by an organization to create internal subnets. The subnet ID provides more than enough subnets and host support than will ever be needed in one subnet. For instance, the 16-bit section can: Create up to 65,536 /64 subnets. This does not include the possibility… Read More »
Suppose there is IP version 6 address 2001:1D11:220A::/48 assigned to an ISP with 16-bit subnet ID. The network administrators can subnet the IP version 6 address just counting /16-bit subnet ID in hexadecimal. This would allow the administrator to create 65,536 /64 subnet. The table below illustrates the subnetting procedure of IPv6 address. IPv6 Range. 2001:1D11:220A:0000::/48 2001:1D11:220A:0001::/48 2001:1D11:220A:0002::/48 2001:1D11:220A:0003::/48… Read More »
In IPv4, the subnet mask 255.255.255.0 is 32 bits and consists of four 8-bit octets. The address: 10.10.10.0 subnet mask 255.255.255.0 means that the subnet is a range of IP addresses from 10.10.10.0 – 10.10.10.255. The prefix-length in IPv6 is the equivalent of the subnet mask in IPv4. However, rather than being expressed in four octets like it is in IPv4, it is expressed as… Read More »
An IPv6 address consists of 32 hexadecimal digits, in 8 sections of 4 digits each, separated by colons. It looks something like this: 1234:5678:90ab:cdef:1234:5678:90ab:cdef IPv6 addresses have several shortcuts that allow them to be compressed into smaller strings following certain rules. If there are any leading zeroes in a section, they may be left off. 0001:0001:0001:0001:0001:0001:0001:0001 could be written as 1:1:1:1:1:1:1:1. Any… Read More »
