cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
601
Views
0
Helpful
2
Replies

DLSw redundancy problem

mchakir
Level 1
Level 1

| |

****** ******** | |

* *--CPA1--*7206-1*--| ******** |

*IBM * ******** |--*7206-3*--|

* * | ******** |

*HOST* | |

* * ******** |--******** |

* *--CPA2--*7206-2*--| *7206-4*--|

****** ******** | ******** |

| |

7206-1 and 7206-2 manage the the connection to the IBM host with a CPA card eich other.

7206-3 and 7206-4 manage the connection between the central site and the remotes sites via frame-relay network, they are border peer and DLSw load balancing coded. also manage the connection between a LAN of the central site and with bridge-group to reach an IBM HOST via 7206-1 and 7206-2.

The following is the configurations:

7206-3:

dlsw local-peer peer-id 3.3.3.3 group 3 border keepalive 0 promiscuous

dlsw load-balance round-robin

dlsw remote-peer 0 tcp 1.1.1.1 timeout 90

dlsw remote-peer 0 tcp 2.2.2.2 timeout 90

dlsw cache-ignore-netbios-datagram

dlsw bridge-group 1

7206-4:

dlsw local-peer peer-id 4.4.4.4 group 3 border keepalive 0 promiscuous

dlsw load-balance round-robin

dlsw remote-peer 0 tcp 1.1.1.1 timeout 90

dlsw remote-peer 0 tcp 2.2.2.2 timeout 90

dlsw cache-ignore-netbios-datagram

dlsw bridge-group 1

The probleme is:

In the central site, i see a slowness in the connection, and it is random, sometime a connction is very fast, other time it is very slow, and it can take up to 1,5 minute to connect.

After all that, i coded a dlsw redundancy in the 7206-3 and 7206-4 FastEthernets, the problem still exist in the LAN, and it cause a trouble in some remotes sites connected with frame-relay, that loose a connection to HOST.

Thank You for your help.

2 Replies 2

k.korlyakov
Level 1
Level 1

1. To make load balancing work you will have to add the following commands:

dlsw timer explorer-wait-time ...

source-bridge ring-group ...

Ring-group number must be the same on 7206-3 & 7206-4 - it prevents unnecessary explorer flooding.

2. If bridge-group 1 on 7206-3 & 7206-4 shares the same Ethernet domain you must use DLSw+ Ethernet Redundancy feature.

3. Border peers in the same group must be in full-mesh and all members in the group must peers with all border peers in this group. On 7206-3 & 7206-4 you will have to add the following commands:

(7206-3)# dlsw remote-peer 0 tcp 4.4.4.4 ...

(7206-4)# dlsw remote-peer 0 tcp 3.3.3.3 ...

Send me more info about your cases. I will try to help you. Detailed picture will be very helpfull.

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: