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CISCO SUPPORT 资料 Problem solving Model Define the problem

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CISCO SUPPORT 资料 Problem solving Model Define the problem Powered By Docstoc
					CISCO SUPPORT 资料

 Problem solving Model

 Define the problem

 Gather the facts

 Consider the possibilities

 Create an action plane

 Implement the action plan

 Observe the result

 Repeat the problem solving process

 Resolve the problem



 show buffers:

 hits: succesful attempts to allocate a buffer

 misses: allocation attempts the results in alloacting new buffer (must be low)

 trims: buffer released becouse not used



 show controller cxbus:

 shows the allocation of the buffers at router startup



 show controller [interface]: display memory management and error countersfor interfaces

 internal controller counts
show memory [free]:

IO memory free: should be great



show processes: to find process that require a lot of cpu

runtime: cpu time the process has used

invoked: number of time the process has been invoked

usecs: cpu time for each process invocation



show process memory: to find the memory allocated from each process



show stacks: snapshot of the stacks



(confg)# exception dump: force creation af a core dump when the next crash occurs



DEBUG TCP/IP

ping

trace

show ip access-list

show ip arp

show ip interface [brief]

show ip ospf database

show ip ospf interface

show ip protocols
show ip route [summary]

show ip traffic      debug ip eigrp

debug ip icmp

debug ip ospf events

debug ip packet

debug ip rip

debug arp



DEBUG NETWARE

ping ipx

show ipx eigrp topology

show ipx interface

show ipx nlsp database

show ipx route

show ipx servers

show ipx traffic

debug ipx ipxwan (ipx on wan interface)

debug ipx packet

debug ipx routing

debug ipx sap

SAP: Service Advertising Protocol to broadcast and discover network services

NCP: Network Core Protocol connection oriented protocl alternative to spx (layer 5,6)

IPX/SPX
DEBUG APPLETALK

show appletalk acsess-list

show appletalk adjacent-routes (network directly connected)

show appletalk arp

show appletalk global (appletalk router information)

show appletalk interface

show appletalk name-cache

show appletalk route

show appletalk traffic

show appletalk nbp

show appletalk zone

debug apple arp

debug apple errors

debug apple events

debug apple nbp

debug apple packet

debug apple routing (RTMP output)

debug apple zip

NBP: Name Binding Protocol (layer 4)

RTMP: Routing Table Maintenance Protocol (layer 4)

ZIP: Zone Information Protocol (layer 5)

DDP: Datagram Delivery Protocol (layer 3)
    ATP: AppleTalk Transfer Protocol (layer 4)

    AEP: AppleTalk Echo Protocol (layer 4)

    ADSP: AppleTalk Data Stream Protcol (layer 5)



    DEBUG SWITCHING

    show system

    show test

    show interface

    show log

    show mac

    show module

    show port

    show config

    show span

    show trunk

    show spantree [vlan][statistics]

    show vtp domain

    show vlan

    debug vlan packet

    debug span

    SPAN: mirror flow data from a port to another to the designated span port

     VTP: Vlan Trunking Protocol, layer 2 multicast messaging protocol that allows vlan
classification
DEBUG FRAME RELAY

show frame-relay lmi: lmi statistics

show frame-relay map: check dlci to layer 3 map and info about connections

show frame-relay pvc: lmi status of each dlci

debug serial interface

debug frame-relay lmi

debug frame-relay events

debug frame-relay packet

LMI: Local Management Interface (Cisco, Ansi, ITU q933a)

FECN: Forward Explicit Congestion Notification

BECN: Backward Explicit Congestion Notification

DE: Discard Eligibility



DEBUG ISDN

show interface bri

show controllers bri

show isdn status

show dialer

show ppp multilink

debug bri

debug isdn q921

debug isdn q321

debug ppp authentication
    debug ppp negotiation

    debug dialer



    TE1---------S--NT2--T--NT1--U--LE

    TE2--R--TA--+




来源:微经验分享平台

来源地址:http://www.vsyo.com/a/t/e35582bc79e77541df61ccc3cfe8fc8b

				
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