hj192837的博客_Cisco

Cisco Private VLAN 笔记

put all ports into vlan 10 (switchport access vlan 10)vtp mode transparentvlan 10 private-vlan primary private-vlan association 100-101vlan 100 private-vlan community vlan 101 private-vlan community

private vlan

原创 2014-03-19 14:52:29 1460 阅读

802.1q tunneling

802.1q tunneling又叫做QinQ，能利用隧道技术，让服务供应商（ISP）仅用一个VLAN来支持客户端的多个VLAN，从而防止多客户存在而很快消耗掉4096个VLAN上限。QinQ技术通过配置隧道端口(tunnel port)，并通过对传入ISP的封包进行双TAG处理，以在ISP端传输。该技术所建立的连接被称为非对称连接，因为一端是tunnel口，另一端可能是trunk口或者路由器子接

802.1q tunneling

转载精选 2012-12-31 12:36:48 2237 阅读

RSPAN 中 reflector port 使用

you can take any free port on the switch for this, you can't use that port for anyhing else when the monitor session is enabled on it. No matter whether that port is down/down or up/up. Reflector

rspan

原创 2012-11-22 10:21:37 1360 阅读

IPSec ports should be allowed

three primary IPSec protocols use ports that must not be blocked by ACLs: 1.ESP, protocol number 50 2.AH, protocol number 51 3.IKE, UDP port 500

ipsec

原创 2012-11-19 18:11:34 536 阅读

Cisco Nexus 1000v Recommendation

1. We recommend deploying VSMs in an HA pair, use anti-affinity rule to reside on different hosts and/or disable DRS for VSMs, and recommended to put on different datastores for VSMs when using Storag

1000v

转载精选 2012-11-06 20:55:39 582 阅读

Cisco UCS结构简介

ucs

转载精选 2012-11-02 14:53:09 2140 阅读 1点赞

Cisco Nexus 1000v Essential Free edition

Cisco Nexus 1000v 4.2(1)SV2(1.1) There is a free Essential edition available of the Cisco Nexus 1000V. Here is the Download location and the Release Notes The Cisco Nexus 1000V Essential

1000v

原创 2012-11-02 08:47:05 518 阅读

Cisco Switch Uplinkfast and Backbonefast

1. Uplinkfast: apply to trunk ports, should be configured only on access-layer switches. # spanning-tree uplinkfast 2. Backbonefast: should be configured on every switch in the network. # spa

uplinkfast

backbonefast

原创 2012-10-26 10:34:56 682 阅读 1点赞

Cisco Switches/Router Layer 3 Security

1. Enable secure Telnet access to a router user interface, and consider using Secure Shell (SSH) instead of Telnet. 2. Enable SNMP security, particularly adding SNMPv3 support. 3. Turn off all unnec

security

原创 2012-10-15 21:07:18 767 阅读

Cisco Switches Layer 2 Security

■ Disable unneeded dynamic protocols like CDP and DTP. example: int fa0/0 no cdp enable switchport nonegotiate ■ Disable trunking by configuring these ports as access po

security

原创 2012-10-14 19:39:31 1207 阅读

Cisco路由器限速

思科

cisco

路由器限速

原创 2012-10-12 21:33:12 822 阅读

cisco交换机端口限速

Cisco 3550端口限速例子一、网络说明 PC１接在Cisco3550 F0/1上，速率为1Ｍ； PC１接在Cisco3550 F0/2上，速率为2Ｍ； Cisco3550的G0/1为出口。二、详细配置过程注：每个接口每个方向只支持一个策略；一个策略可以用于多个接口。因此所有PC的下载速率的限制都应该定义在同一个策略(在本例子当中为policy -map user

cisco

交换机端口限速

转载精选 2012-10-12 17:36:30 1541 阅读

TCP/IP四层模型和OSI七层模型对应表

TCP/IP四层模型和OSI七层模型对应表 OSI七层网络模型 Linux TCP/IP四层概念模型对应网络协议

TCP/IP

OSI七层模型

四层模型

转载精选 2012-10-12 11:00:59 656 阅读

Inter-VRF Routing with VRF Lite

In Intro to VRF lite, we looked at how virtual routing and forwarding (VRF) instances can be employed to logically separate the layer three topologies of unrelated entities sharing a single phy

vrf

转载精选 2012-10-10 21:07:27 1311 阅读 1点赞

Intro to VRF lite

VRFs, or VPN Routing and Forwarding instances, are most commonly associated with MPLS service providers. In such networks, MPLS encapsulation is used to isolate individual customers' traffic and an

vrf

转载精选 2012-10-10 21:01:35 1153 阅读

VRF Lite

The VRF is “Virtual Routing and Forwarding” to have multiple isolated IP routing tables on a single device. When a route is added to your router all other connected networks will be able

vrf

转载精选 2012-10-10 20:59:19 6292 阅读

MPLS ××× Notes

Route Targets: export: redistribute out of the VRF into BGP import: redistribute into the VRF from BGP MPLS VPN configuration focuses primarily on control plane functions: 1. creating the VRF and

mpls

原创 2012-10-08 10:41:25 502 阅读

MPLS Tables Notes

LIB ( Label Information Base ) --- show mpls ldp bindings xxx FIB ( Forwarding Information Base ) --- show ip cef xxx FIB is used to forward packets that arrived unlabeled LFIB ( Label Forwarding I

mpls

原创 2012-10-05 13:28:14 491 阅读

配置DM×××

dmvpn

转载精选 2012-10-05 09:34:38 1053 阅读

BGP Improvement Methods

bgp

原创 2012-10-04 14:56:09 314 阅读

IPv6 Tunnel Mode

ipv6

原创 2012-09-29 11:51:40 879 阅读

使用show命令测试BGP regex

To find all subnets originating from AS 100 (AS path ends with 100): Router# show ip bgp regexp _100$ ... Network Next Hop Metric LocPrf Weight Path * 10.1.0.0/30 17

cisco

转载精选 2012-09-28 21:11:32 1278 阅读

IPv6 Multicast Well-Known Addresses

ipv6

原创 2012-09-26 09:32:20 505 阅读

IPv6 Address Type

ipv6

原创 2012-09-25 21:46:40 488 阅读

QoS的技术实施

QoS: 1. Marking and Classification --- IP Precedence and DSCP ( Differentiated Services Code Point ), NBAR ( Network-Based Application Recognition ) 2. Queuing -- Class-based weighted fair queui

qos

原创 2012-09-22 10:56:23 657 阅读

QoS IP Precedence and DSCP Values

qos

翻译精选 2012-09-21 16:49:56 1143 阅读

BGP Route Selection

bgp

翻译精选 2012-09-21 16:48:45 440 阅读

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个人学习笔记

Cisco Private VLAN 笔记

802.1q tunneling

RSPAN 中 reflector port 使用

IPSec ports should be allowed

Cisco Nexus 1000v Recommendation

Cisco UCS结构简介

Cisco Nexus 1000v Essential Free edition

Cisco Switch Uplinkfast and Backbonefast

Cisco Switches/Router Layer 3 Security

Cisco Switches Layer 2 Security

Cisco路由器限速

cisco交换机端口限速

TCP/IP四层模型和OSI七层模型对应表

Inter-VRF Routing with VRF Lite

Intro to VRF lite

VRF Lite

MPLS ××× Notes

MPLS Tables Notes

配置DM×××

BGP Improvement Methods

IPv6 Tunnel Mode

使用show命令测试BGP regex

IPv6 Multicast Well-Known Addresses

IPv6 Address Type

QoS的技术实施

QoS IP Precedence and DSCP Values

BGP Route Selection