Tài liệu IPX Troubleshooting 1 pptx

Delay of this IPX network, in ticks is 6 throughput 0 link delay 0 IPXWAN processing not enabled on this interface.. IPX SAP update interval is 60 seconds IPX type 20 propagation packe

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Lab 10.3.2: IPX Troubleshooting 1

Frame Relay

Atlas 550 ABC2

Novell

Fa0/0 ABC1.0.1.1

PVC DLCI 17 DLCI 16

Objective

Utilize a systematic approach to troubleshooting an IPX network

Scenario

As the Enterprise Network Administrator, you are responsible for maintaining connectivity between remote offices at your company SanJose1 router is lo-cated at the corporate office and the Singapore router is lolo-cated at one of the many branch offices Within the IPX core you are using EIGRP and you’re run-ning IPX RIP on the LANs Over the past weekend the Singapore router was upgraded to Cisco a 2600 router as part of an ongoing maintenance procedure

Lab Tasks

Build the network according to the diagram above and load the appropriate

‘broken’ configuration files to each router Save the configurations and reload each router Clock rates have been applied to all serial interfaces For the pur-pose of this lab, you will be using a router to simulate a Novell IPX Server Assume the Novell configurations are correct

Confirm connectivity by performing the ping ipx command between the routers The format for an ipx ping is ping ipx Network.Node. All pings should be successful Use show ipx interface command to find the ipx address for

an interface

SanJose1#show ipx interface s0/0.1

Serial0.1 is up, line protocol is up

IPX address is ABC2.0000.0002.0001 [up]

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Delay of this IPX network, in ticks is 6 throughput 0 link delay 0

IPXWAN processing not enabled on this interface

IPX SAP update interval is 60 seconds

IPX type 20 propagation packet forwarding is disabled

Incoming access list is not set

Outgoing access list is not set

IPX helper access list is not set

SAP GGS output filter list is not set

SAP GNS processing enabled, delay 0 ms, output filter list is not set

SAP Input filter list is not set

SAP Output filter list is not set

SAP Router filter list is not set

Input filter list is not set

Output filter list is not set

Router filter list is not set

Netbios Input host access list is not set

Netbios Input bytes access list is not set

Netbios Output host access list is not set

Netbios Output bytes access list is not set

Updates each 60 seconds aging multiples RIP: 3 SAP: 3

SAP interpacket delay is 55 ms, maximum size is 480 bytes

RIP interpacket delay is 55 ms, maximum size is 432 bytes

RIP response delay is not set

Watchdog processing is currently disabled

SPX spoofing is disabled, idle time 60

IPX accounting is disabled

IPX fast switching is configured (enabled)

RIP packets received 0, RIP packets sent 0, 0 Throttled

RIP specific requests received 0, RIP specific replies sent 0

RIP general requests received 0, 0 ignored, RIP general replies sent 0

SAP packets received 0, SAP packets sent 0, 0 Throttled

SAP GNS packets received 0, SAP GNS replies sent 0

SAP GGS packets received 0, 0 ignored, SAP GGS replies sent 0

SanJose1#ping ipx abc1.0.1.1

Type escape sequence to abort

Sending 5, 100-byte IPX Novell Echoes to ABC1.0000.0001.0001, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 44/45/48 ms

Scenario

San Jose’s local IT call center manager has just informed you that his staff has been flooded with calls over the past twenty minutes Due to the volume of complaints, this issue has been escalated to you Wanting to find a starting point, you ask him to define the problem He responds with, ‘users are com-plaining that they are unable to login to the HR database….which is located in the Singapore office.’

Step 1

Define your problem

Multiple users on network ABC3 are unable to see a Novell server on network ABC1 No complaints from the Singapore remote office An upgrade of the re-mote router was performed over the weekend

Step 2

Gather the Facts

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Based on the current information you have, it is safe to assume that the week-end upgrade didn’t go as smooth as they thought You then login to the local router at San Jose to gather more information about the problem

Issue the following commands to narrow down your possibilities

The first thing to check is your connections

SanJose1#show ipx interface brief

Interface IPX Network Encapsulation Status IPX State FastEthernet0/0 ABC3 NOVELL-ETHER up [up]

Serial0/0 unassigned not config'd up n/a

Serial0/0.1 ABC2 FRAME-RELAY up [up]

FastEthernet0/1 unassigned not config'd administratively down n/a

Serial0/1 unassigned not config'd administratively down n/a

Serial0/2 unassigned not config'd administratively down n/a

Then check the routing table to see if you have the appropriate routes Every-thing looks fine Note – in a very large network you can enter a network number

to limit the display

SanJose1#show ipx route

Codes: C - Connected primary network, c - Connected secondary network

S - Static, F - Floating static, L - Local (internal), W - IPXWAN

R - RIP, E - EIGRP, N - NLSP, X - External, A - Aggregate

s - seconds, u - uses, U - Per-user static

3 Total IPX routes Up to 1 parallel paths and 16 hops allowed

No default route known

C ABC2 (FRAME-RELAY), Se0/0.1

C ABC3 (NOVELL-ETHER), Fa0/0

E ABC1 [20514560/1] via ABC2.0000.0002.0000, age 00:00:31,

11u, Se0/0.1

Perform an ipx ping to confirm your routing table results

SanJose1#ping ipx abc1.0.1.1

Type escape sequence to abort

Sending 5, 100-byte IPX Novell Echoes to ABC1.0000.0001.0001, timeout is 2 seconds:

!!!!!

Success rate is 100 percent (5/5), round-trip min/avg/max = 44/44/48 ms

The show ipx server command displays a list of all ipx servers discovered through SAP advertisements Notice here that only the local servers are dis-played

SanJose1#show ipx servers

Codes: S - Static, P - Periodic, E - EIGRP, N - NLSP, H - Holddown, + = detail

U - Per-user static

2 Total IPX Servers

Table ordering is based on routing and server info

Type Name Net Address Port Route Hops Itf

S 4 SANJOSE1_FILE1 ABC3.0000.0000.0001:0022 conn 1 Fa0/0

S 7 SANJOSE1_PRINT1 ABC3.0000.0000.0002:0021 conn 1 Fa0/0

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The show ipx interface command provides a great deal of useful informa-tion Using this display you can verify and troubleshoot interface configuration problems

SanJose1#show ipx interface s0/0.1

Serial0/0.1 is up, line protocol is up

SAP Output filter list is 1000

Step 3

Based on your observations of the SanJose1 router, you are certain there is a communications problem to the Novell server in Singapore You request de-tailed observations from the IT staff member in Singapore

Use the following commands below to help gather facts about the current situa-tion in Singapore

Singapore#show ipx route

Codes: C - Connected primary network, c - Connected secondary network

S - Static, F - Floating static, L - Local (internal), W - IPXWAN

R - RIP, E - EIGRP, N - NLSP, X - External, A - Aggregate

s - seconds, u - uses, U - Per-user static

3 Total IPX routes Up to 1 parallel paths and 16 hops allowed

No default route known

C ABC1 (NOVELL-ETHER), Fa0/0

C ABC2 (FRAME-RELAY), Se0/0.1

E ABC3 [2172416/1] via ABC2.0000.0002.0001, age 00:02:33,

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Singapore#show ipx servers

U - Per-user static

3 Total IPX Servers

E 4 SANJOSE1_FILE1 ABC3.0000.0003.0001:0022 2172416/01 2 Se0/0.1

S 4 SINGAPORE_FILE1 ABC1.0000.0001.0001:0021 conn 1 Fa0/0

S 7 SINGAPORE_PRINT1 ABC1.0000.0001.0002:0069 conn 1 Fa0/0

Singapore#show ipx interface serial 0/0.1

Serial0/0.1 is up, line protocol is up

SAP Output filter list is 1000

Step 4

Consider the possibilities Use the information you have and your knowledge of Cisco products to isolate the problem

SAP advertisements are not being sent across the WAN link The SAP Output filter list 1000 is applied to the Singapore serial interface It may be improperly configured

Step 5

Create an action plan

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Confirm the configuration of access list 1000 on the Singapore router that was applied to outgoing SAP advertisements Change as necessary

Keep in mind that removing or disabling access list removes the security that the list was meant to provide

Step 6

Implement the action plan

Confirm the configuration of access list 1000 on the Singapore router

Singapore#show access-lists

IPX sap access list 1000

deny ABC1

permit FFFFFFFF

The first line in this access list denies any advertisements in Singapore’s local network from reaching San Jose This is definitely incorrect Company policy states that print servers should be used locally, thereby requiring an access list Corrections are needed for access-list 1000:

Singapore#(config)no access-list 1000

Singapore#(config)access-list 1000 deny ABC1.0000.0001.0002

Singapore#(config)access-list 1000 permit FFFFFFFF

Step 7

Observe the results of the action plan

Login to the SanJose1 router Check if SAP is being advertised across the frame relay connection Be sure to wait at least 60 seconds since the default update time for SAP updates is 60 seconds

Issue the show ipx servers command:

SanJose1#show ipx servers

U - Per-user static

2 Total IPX Servers

S 4 SANJOSE1_FILE1 ABC3.0000.0003.0001:0022 conn 1 Fa0/0

S 7 SANJOSE1_PRINT1 ABC3.0000.0003.0002:0021 conn 1 Fa0/0

E 4 SINGAPORE_FILE1 ABC1.0000.0001.0001:0021 2172416/01 2 Se0/0.1

Step 8

Document your work

Tiêu đề	IPX Troubleshooting 1
Chuyên ngành	Internetwork Troubleshooting
Thể loại	Lab
Năm xuất bản	2001

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