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persian.shafagh.com
پروتکل قدرتمند و پرطرفدار OSPF یا Open Shortest Path First، پروتکلی Link State و Open Standard است که در RFC 2328 شرح داده شده است. اين پروتکل برای پيدا کردن Neighbor (همسايه) – یا در واقع روترهای متصل به خود – از Hello Message استفاده ميکند. ...
Yesterday we had a customer network migration from IPsec VPN to MPLS. Customer’s headquarter network wanted to be the point of internet sharing so that all branch offices use that point for internet browsing. ...
persian.shafagh.com
Enhanced Interior Gateway Routing Protocol یا EIGRP در اوايل دهه 90 توسط سيسکو ارائه شد. با اينکه EIGRP نسخه بهبود يافته IGRP است اما از نظر کارائی و عملکرد تفاوت هايی زير بنائی با کليه Distance Vector ...
TE was the main driver and reason for MPLS invention. To utilize bandwidth of unused links, to have flexibility in path selection just like previous WAN switching technologies. To create Virtual circuits on top of IP networks...
For those of you who haven’t heard about CCIE flyer magazine, is not a bad idea to check their website: http://www.ccieflyer.com. They have CCIE related stories, interviews, CCIE training boot camps with special pricing and also workbook promotions. ...
October has been a super active month for Cisco and Cisco guys, after introducing IOS 15, ISR 2nd Generation and the new version of CCIE, ( and rumors of new catalysts), it’s time for Windows 7 and MacOS Snow Leopard to have Cisco VPN Client and Cisco SSL AnyConnect VPN Client versions, av...
October 2009 seems to be a super active month for Cisco, after introducing IOS 15, ISR 2nd Generation and the new version of CCIE, (and rumors of new catalysts), it’s time for Windows 7 and MacOS Snow Leopard to have Cisco VPN Client and Cisco SSL AnyConnect VPN Client versions, available to d...
Layer2 Tunneling protocol version 3 (L2TPv3) has the capability to tunnel any Layer 2 payload over IP networks. L2TPv3 uses IP as transport so it can be used in any IP-aware network including MPLS. L2TPv3 tunnels are point to point...
persian.shafagh.com
اگر قصد خرید روتر دارید بهتر است دست نگه دارید. چون سری جدید سیسکو نه تنها فقط یک روتر بلکه یک دستگاه با قابلیت سرور ویندوز، روتر، سوییچ شبکه، تلفن IP، کنترل سیستم دوربین مداربسته و شبکه بیسیم است. مشخصات سری جدید ISR امروز اعلام شد و از دو هفته دیگر قابل خریداری است. ...
Multicast BGP feature adds capabilities to BGP to enable multicast routing to connect multicast topologies within and between BGP autonomous systems. MBGP is an enhanced BGP that carries IP multicast routes...
In the previous port, we reviewed MSDP, Multicast Source Discovery Protocol (MSDP) is the key protocol that makes Anycast RP possible. The Anycast RP uses MSDP for redundancy and failover between RPs in Protocol Independent Multicast sparse mode (PIM-SM) networks...
The MPLS VPN network needs to be carefully designed and the service provider core must be configured for native multicast service: PIM-SM, Source specific multicast (PIM-SSM), or Bidirectional PIM (PIM-BIDIR) are required at core...
MSDP or Multicast Source Distribution Protocol allows multicast sources for a group to be known to all rendezvous points (RPs) in different domains. Each PIM-SM domain uses its own RP and MSDP connects source based trees to destination trees...
The carrier supporting carrier feature enables one MPLS VPN-based service provider to allow other service providers (Tier2) to use its backbone network for connectivity of their POPs. It is also called a carrier-of-carriers VPN....
In MP-BGP, VPN label assignment is always performed by BGP next hop. In the following picture, if we create eBGP relationship beween R3 and R1 (instead of R2), VPN label from CE (R5) to other CE (R4) will point to R1 as R1 is the next hop for R3...
