Enterasys Networks X-PeditionTM manual Configuring DoD/BoD

Configuring DoD/BoD

XSR(config-if<BRI-1/0>)#dialer pool-member 2

XSR(config-if<BRI-1/0>)#no shutdown

The following commands define a dialer group, add a dialer pool, set a 20-second idle timeout, and map BRI interface 1/0 to Dialer port 1. The dialer map command directs Node D to call Node B, specifying Node B’s IP address and phone number as well as enables spoofing on the network. Optionally, you can set a clear text password be sent to the peer for PAP authentication.

XSR(config)#interface dialer 1

XSR(config-if<D1>)#no shutdown

XSR(config-if<D1>)dialer pool 2

XSR(config-if<D1>)encapsulation ppp

!ppp pap sent-username boston password orbitor XSR(config-if<D1>)dialer idle-timeout 20 XSR(config-if<D1>)dialer-group 7 XSR(config-if<D1>)dialer map ip 20.20.20.2 2400 XSR(config-if<D1>)ip address 20.20.20.4 255.255.255.0

The following command defines interesting packets for the dial out trigger by configuring ACL 106 to pass all Type 8 source and destination ICMP packets up to 20 idle seconds:

XSR(config)access-list 106 permit icmp any any 8

The following command maps ACL 1061 to dialer group 7:

XSR(config)#dialer-list 7 protocol ip list 106

Configuring DoD/BoD

The XSR supports Bandwidth-on-Demand (BoD), the ability to dynamically change bandwidth during a multilink connection. DoD/BoD is performed by configuring the following on a multilink bundle:

•The dialer idle timeout value to bring down an idle link when triggered by interesting traffic specified by an Access Control List (ACL). The link is brought down by the calling node.

•The multilink load threshold to trigger the dialer to add or delete a link. This feature is controlled by the calling node.

•The minimum links value to maintain on the bundle. This feature is controlled by the calling node.

•Bandwidth Allocation Protocol (BAP) values to negotiate with the peer to add or drop links.

For information on configuring BAP on Dialer interfaces, refer to “Configuring PPP” on page 8-1.An example of the XSR’s Dial on Demand functionality is illustrated in the topology shown in Figure 10-11on page 10-24.

XSR User’s Guide 10-23