3Com Router 3012 Manuale di istruzioni

3Com Router 3000/5000 Family Release Notes for V1.30

Scope of this Release

This release contains software version 1.30 for the 3Com Router 3000 and the

Router 5000 families. This release contains bug fixes, and Command Line Interface

(CLI) changes. The version 1.30 supports router models listed in Table 1 below.

Product name Product number

3Com Router 3012 3C13612

3Com Router 3013 3C13613

3Com Router 3015 3C13615

3Com Router 3016 3C13616

3Com Router 3018 3C13618

3Com Router 5009 3C13700

3Com Router 5231 3C13750

3Com Router 5640 3C13754

3Com Router 5680 3C13758

Table 1. 3com Routers Supported In v1.30

Changes in this Release

This release includes the following changes in the Command Line Interface (CLI):

1. There are minor changes in the text strings that appear when you use the 'display

snmp statistics' command of the CLI.

2. Previously, the 'display ip statistics' command would show statistics for both IP

and ICMP traffic. In this release, there is a separate command ('display icmp

statistics') to view ICMP traffic information. Additionally, this release displays

the statistics in an improved format.

3. This release includes a change in the range of values for the access control list

(ACL). In this release, when you type the 'acl ?' command, you will see the

following information:

<1000-1999> Standard access-list (add to current using rules)

<2000-2999> Extended access-list (add to current using rules)

<3000-3999> Ethernet protocol type access-list (add to current using rules)

<4000-4999> MAC address access-list (add to current using rules)

NOTE: The router automatically updates any ACL entries you previously created

using the range of values supported by earlier versions of the router.

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4. The 'info-center logbuffer filter' command supports four new filter parameters,

L2TP, EC (encryption card), IPSEC, and IKE.

Bugs Fixed in this Release

System/Interface:

•Previously, the router would forward packets with a field length set to zero across

the T1 WAN interface. This would cause the router receiving these packets to

reboot. In the current release, the router checks the field length of outbound

packets and drops any with a field length of zero.

•In the past, a user would not be able to access the system file if a remote upgrade

operation did not complete successfully. For example, if the user did not respond

to the 'writing to flash' query before the telnet session timed out, no user at any

location would be able to access the system file. The only way around this was to

reboot the router.

•In earlier releases, it is possible for the 301x router to run out of memory. The

system would fail to login via telnet and the ‘display current’ command would fail

with insufficient memory error.

•Previously, if a combination of eight MIM cards were installed in the 5680 device

simultaneously, the device would be unable to boot up.

•In earlier releases, the system clock would revert back to GMT settings when the

router underwent a reboot operation.

Link Layer/Network Protocol:

•In earlier releases, the router 5680 would corrupt UDP packets from the LAN

Bridge-set 2 to the WAN bridge-set1. The corrupted packets were layer 3

broadcast packets, including DHCP requests.

•In previous releases, the router would not place ARP responses in the ARP cache

when it was configured in bridge mode and IP routing mode. An ARP request

from the router to the client would be entered in the cache as all zeros. Therefore,

it was not possible to manage the router until the client pinged the router. In this

release, the router creates the correct ARP entry in the ARP cache.

•In earlier releases, ISDN would not work with Lucent 5 (AT&T 5ESS), or

National ISDN. This was because there was no support for North American

switch types for T1 PRI interfaces.

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•Previously, the LAN Ethernet port would hang if you used the bridged

configuration at approximately 80% load. The user would need to manually shut

down and restart the port, or reboot the router, in order to fix this problem.

•It was observed that a 5680 device routing to five remote 3016 devices would

reboot spontaneously. The router experienced PCI write error under heavy traffic

load when the router was fully populated with E1 interface modules.

•In previous releases, the router 5231 was unable to route IP, and bridge other

protocols.

•Previously, the 5009 routers would not answer incoming BRI calls with switches

that required channel ID to be present in a setup message.

•In earlier releases, the ISDN BRI U interface did not interoperate with the DMS-

100 National ISDN configuration in the 3015 router.

•Previously, the router would sometimes reboot when you changed a link from

MFR to MP.

•In the past, the DHCP ‘option’ commands were not saved with the ‘save’

command. Therefore, it was not maintained after a reboot and would need to be

re-entered. The ‘option’ command now supports values up to 64 bytes.

Routing Protocol:

•Previously, the router would reboot when the user tried to use more than 15,000

BGP routes. In the current release, the router limits the number of BGP routes to a

maximum of 15,000 routes.

•In previous releases, if you used ‘the default-local-pref’ command with a value

other than 100, the router would convert this value back to 100 after a reboot

operation.

Security:

•This release contains a fix for the NISCC Vul/236929 TCP vulnerability, which

was released on April 20th, 2004. For more information on this vulnerability,

refer to the NISCC-CERT advisory link at:

http://www.uniras.gov.uk/vuls/2004/236929/index.htm

•In previous releases, the TACAS+ authentication scheme would not attempt the

secondary authentication method (LOCAL) after the first defined authentication

method failed.

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Part No. 10014533

Published August 2004

QoS:

•Now, when a hardware encryption card (NDEC) is installed and QoS (Quality of

Service) is enabled, the NDEC module will handle the QoS processing.

The following features are included in this Release

1. Dynamic Routing Standby

Dynamic routing standby is a new backup approach that mainly uses legacy DCC

to dynamically maintain dial links. In other words, it is a route-based dial backup.

By making use of convergence time and related features of dynamic routing

protocols, dynamic routing standby perfectly combines backup and routing. Thus, it

breaks the limitation of interesting packet-triggered dial in legacy DCC and provides

reliable connection and standard dial-on-demand service.

Dynamic routing standby is suitable for situations involving multiple interfaces and

routers, since both primary and secondary interfaces can be of any interface type.

Dynamic routing standby does not depend on a particular route protocol, and can run

RIP1, RIP2, OSPF, etc. It does not depend on interesting packets to trigger dial, thus

the secondary link will start automatically when the primary link disconnects without

dialing delay (excluding route convergence time).

You can configure and manage the dynamic routing standby feature using the

following CLI commands:

standby routing-group group-number

undo standby routing-group group-number

standby routing-rule group-number ip ip-address address-mask

Undo standby routing-rule group-number

standby routing-check group-number timer seconds

undo standby routing-check group-number

standby routing-disable seconds

undo standby routing-disable

2. X.25 CUG

The X.25 protocol is the interface procedure between the data terminal equipment

(DTE) and data circuit-terminating equipment (DCE). With X.25, two DTE devices

can communicate with each other via the existing telephone network. DTE usually

refers to the host or terminal at the user side and DCE usually refers to the

synchronous modem.

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Closed user group (CUG) is a call restriction service among the optional services of

X.25. It is mainly used to restrict originating or receiving call capabilities for data

transmission equipment (DTE) users. The users in the same CUG can still call each

other, but users of different CUGs cannot. As a result, this allows you to form a

private data communication subnet on an X.25 public data communication network.

The X.25 CUG service can be configured using these CLI commands:

x25 map protocol protocol-address x121-address x.121-address

closed-user-group group_number

x25 call-facility closed-user-group group-number undo x25 call-facility closed-

user-group

x25 cug-service [ incoming-access ] [ outgoing-access ] [ suppress { all |

preferential } ]

undo x25 cug-service

x25 local-cug cug-number network-cug cug-number [ no-incoming ] [ no-

outgoing ] [ preferential ]

undo x25 local-cug cug-number

display x25 cug

3. BRI 128K Leased Line

BRI stands for Basic Rate Interface, which is the basic ISDN configuration. This

configuration consists of two B-channels that can carry voice or date at a rate of

64Kbps, and one D-channel, which carries call-control information. The current

release supports a 128Kbps leased line by combining the two 64Kbps B-channels into

a single 128Kbps physical channel.

You can use these CLI commands to configure the ISDN 128K leased line:

dialer isdn-leased channel-number

undo dialer isdn-leased channel-number

dialer isdn-leased 128k

undo dialer isdn-leased 128k

isdn link-mode p2p

undo isdn link-mode p2p

4. HWPing

HWPing is a tool used for testing the performance of the protocols operating on a

network. It is an enhancement to the ping function that only allows you to test the

roundtrip delay (time required for a packet to travel from the local end to a specified

destination and return to the local end again). HWPing enhances the ping function by

detecting the state (enabled or disabled) of a DLSW, DHCP, FTP, HTTP, or SNMP

Server, and testing the response time for each type of service.

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Part No. 10014533

Published August 2004

You may set parameters of HWPing operations, and view the statistics of these

operations using the following CLI commands:

hwping-server enable

undo hwping-server enable

hwping-server udpecho ip-address port-num

undo hwping-server udpecho ip-address port-num

hwping-server tcpconnect ip-address port-num

undo hwping-server tcpconnect ip-address port-num

hwping-agent enable

undo hwping-agent enable

hwping administrator-name operation- tag

undo hwping administrator-name operation-tag

destination-ip ipaddress

undo destination-ip

destination-port port-number

undo destination-port

source-interface interface-type interface-number

undo source-interface

source-ip ipaddress

undo source-ip

source-port port-number

undo source-port

testtype { icmpecho | udp-public | udp-private | tcp-public | tcp-private | dlsw |

dhcp | snmpquery | ftp | http }

count times

undo count times

datasize size

undo datasize

frequency interval

undo frequency

timeout time

undo timeout

ttl number

undo ttl

tos value

undo tos

datafill string

undo datafill

http-operationtype { get | post }

http-string url-string

undo http-string

ftp-operationtype { get | put }

username name

undo username

password password

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Part No. 10014533

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undo password

filename file-name

undo filename

jitter-packetnum number

undo jitter-packetnum

jitter-interval interval

undo jitter-interval

history-records number

undo history-records

description string

undo description

send-trap { all| probefailure | testcomplete | testfailure }

undo send-trap { all| probefailure | testcomplete | testfailure }

hwping-agent max-requests number

undo hwping-agent max-requests number

testenable

display hwping { history | jitter | result } [ administrator-name operation-tag ]

http://www.3com.com/

Part No. 10014533

Published August 2004

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