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 »
There are several different ways to configure IPv6 and the exact method depends on the network design and architecture of the business model. Static Addressing Native and using IPv6 either on its own or in a dual-stack configuration alongside IPv4. DHCPv6 Address automatically obtained by DHCPv6 to an upstream server. Prefix delegation may also be used with DHCPv6… Read More »
In this blog, we will see the subnet size of IPv6, and also we will see some of the other information about IPv6 in this lesson. Let’s go ahead. IPv6 requires an IPv6-enabled network. IPv6 connectivity delivered directly by an ISP is ideal. Some ISPs deploy a dual stack configuration in which IPv4 and IPv6 are delivered simultaneously… Read More »
I want to allow all other routes but not the default routes to my downstream BGP peers. Step-1= Create the Prefix list. ip ip-prefix NO-DEFAULT-ROUTE index 10 deny 0.0.0.0 0ip ip-prefix NO-DEFAULT-ROUTE index 20 permit 0.0.0.0 0 less-equal 32 Step-2=Route-Policy Creation route-policy NO-DEFAULT-ROUTE permit node 10if-match ip-prefix NO-DEFAULT-ROUTE Step-3= Apply on Peers. bgp <ASN>peer <ip> as-number <ASN>peer <ip>… Read More »
BGP is an Exterior Gateway Routing Protocol and BGP is used for exchanging the routing information between the auto system numbers. Let’s look into some of the BGP’s basic features. BGP Keypoints..! BGP is a Path Vector Protocol. BGP is an open standard protocol. BGP is an exterior gateway routing protocol and it is designed for inter-AS domain… Read More »
BGP is an exterior gateway routing protocol and it is used to exchange the routes or prefixes between the AS Numbers on the internet. Before I go ahead let me tell you 3 RFCs to read and also you can read Jeff Doyles TCP/IP Vol-2, This book is one of my favorite and very easy to understand.RFC4271RFC4276RFC4277 Before… Read More »
