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关于Cisco IOS命名

关于Cisco IOS命名,下面是一些IOS的名称:

c2500-is-l.122-15.T16.bin

c2500-is-l.121-27.bin

c2600-js-mz.122-31.bin

c3640-jk9o3s-mz.122-31.bin

c2600-ik9o3s-mz.122-31.bin

c2500-c-l.120-28.bin

c4500-a3jk9s-mz.122-29.bin

c2950-i6k2l2q4-tar.121-20.EA1.bin

首先说说IOS的运行平台,c2500、c2600、c4500、c2950代表运行此IOS的硬件平台,例如:C2500指2500系列路由器。

其次,看看IOS的版本,IOS有主版本号:11.0、11.1、11.2、11.3、12.0、12.1、12.2、12.3、12.4等,这些主版本号相当于windows的版本有win98、win2000、winxp、win2003。

当Cisco发布了某个主版本号的IOS以后,它会对它进行维护(仅修正bug,不添加新功能),每维护一次,维护版本号加1。例如c2500-is-l.121-27.bin中的“121-27”代表主版本号为12.1,维护了27次。

当一个主版本号的IOS发布一段时候后,Cisco会放出基于该主版本的下一版本IOS的测试版,IOS名字后面会加上“T”字,例如:c2500-is-l.122-15.T16.bin,当正式发布的时候,它将成为12.3版本。

其它的字母代表IOS的特性集(即IOS的功能,例如:winxp分home版、professional版、media center版等等),下面列出重要的。

a2

ATM

a3

SNA Switching (APPN replacement)

c

CommServer/Remote Access Server (RAS) subset (Simple

Network Management Protocol (SNMP), IP, Bridging,

Internetwork Packet Exchange (IPX), AppleTalk, Decnet,

Frame Relay, High−Level Data Link Control (HDLC),

Point−to−Point Protocol (PPP), X, 25, AppleTalk Remote

Access Protocol (ARAP), TN3270, PT, XRemote,

Local−area Transport (LAT))

g

ISDN subset (SNMP, IP, Bridging, ISDN, PPP, IPX, AppleTalk)

i

IP subset (SNMP, IP, Bridging, WAN, Remote Node, Terminal

Services)

j

Basic Enterprise for c2600/c3600

k8

Less than or equal to 64−bit encryption. On Cisco IOS Software

Release 12.2 and up.

k9

Greater than 64−bit encryption. On Cisco IOS Software Release 12.2

and up.

l

IPeXchange IPX, Static Routing, and Gateway.

l2

Layer 2 switching

o

Firewall (formerly IPeXchange Net Management)

o3

Firewall with Intrusion Detection (Firewall Phase II).

p

Service Provider (IP RIP/IGRP/EIGRP/OSPF/BGP, Connectionless

Network Service (CLNS) Intermediate System−to−Intermediate

System (IS−IS)/Interior Gateway Routing Protocol (IGRP))

s

Basic Plus

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