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路由交换之VLAN-MAP详解(C..

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set port flowcontrol

set port flowcontrol

2008-05-03 23:33:48

set port flowcontrol
To set the receive flow-control value for a particular Gigabit Ethernet switching module port, use the set port flowcontrol command in privileged EXEC mode. To reset the receive flow-control value to the default, use the no form of this command.
set port flowcontrol {receive | send} [module-number | port-number] {off | on | desired}
no set port flowcontrol {receive | send} [module-number | port-number] {off | on | desired}
Syntax Description

receive ..

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mls qos cos

mls qos cos

2008-05-03 23:23:45

mls qos cos
To define the default Multilayer Switching (MLS) class of service (CoS) value of a port or to assign the default CoS value to all incoming packets on the port, use the mls qos cos command in interface configuration mode. To return to the default CoS setting, use the no form of this command.
mls qos cos {default-cos | override}
no mls qos cos {default-cos | override}
Syntax Description

default-cos

Assigns a default CoS value to a port. If the port is CoS tr..

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mac-address-table aging-time

mac-address-table aging-time

2008-05-03 23:20:12

mac-address-table aging-time
To configure the aging time for entries in the Layer 2 table, use the mac-address-table aging-time command in global configuration mode. To reset the seconds value to the default setting, use the no form of this command.
Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers
mac-address-table aging-time seconds
no mac-address-table aging-time seconds
Catalyst Switches
mac-address-table aging-time seconds [vlan vlan-id]
no mac-address-t..

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一个网段内的电脑大部分不能上网

一个网段内的电脑大部分不能上网

2007-11-18 18:15:27

１０月１５日上午１１点，公司网络出现有一个网段的大部分电脑不能上网的情况。

故障现象如下：
１、不能上网的电脑有网页打不开，ＱＱ、ＭＳＮ上不去（ＩＳＡ代理实现），但是内部ＭＳＮ通讯正常。
２、不能上网的电脑ping x.x.10.252 以及x.x.10.254不通，ping x.x.10.253 数据正常（有做ＨＳＲＰ） x.x.10.252为活动路由。
３、因为存在x.x.10.x网段的包括５楼两个交换机和四楼一个交换机。同时五楼交换机还存在其他网段，但是网络使用正常。
４、在不能上网的电脑上使用 arp -a发现网关MAC地址也是正常的。
&n..

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