[Bridge] bridge's STP problem about topology change

Matt Lee mattlitw at yahoo.com
Thu Aug 26 18:25:03 PDT 2004

Hi, All:

     I am tring to use STP function on bridge device that refer the
 BRIDGE-STP-HOWTO. And I use PING program to test it from PC1 to
 PC2. But the forward function is become too long when bridge topology

 How can I tuning the STP to make client connect to another again faster?

 I have been use follow command. But it seen not this issue. Bcause, if I
run " arp -d " on PC1 (flush the arp table) and the reply will be
immediately.Or if I run one ping  from PC3 to PC2 (PC3 didn't have PC2's 
arp entry). When PC3 get reply from PC2 and then the PC1 will also get 
reply immediately.

 Does any one know what's problem?

The command for adjust forward dely :

/usr/sbin/brctl setbridgeprio mybr 0
/usr/sbin/brctl sethello mybr 1
/usr/sbin/brctl setmaxage mybr 4
/usr/sbin/brctl setfd mybr 4
/usr/sbin/brctl stp mybr on

Two bridge machines are install with linux-2.4.26 and use the ebtables
patch  (ebtables-brnf-6-vs-2.4.26).

 Network environment:

 PC1 --------- Bridge 1 --------  PC2
              |----- Bridge 2 ---|
 PC3 ----

 Very thank for your help


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