R0106-HP MSR Router Series Layer 2 - WAN Configuration Guide(V7)
165
Ste
p
Command
Remarks
12. Specify a card for forwarding
the traffic of a dialer interface.
service slot slot-number
By default, no card is specified.
This command is available only on
dialer interfaces.
Only MSR4000 routers support
this command. "MSR4000"
collectively refers to MSR4060 and
MSR4080.
13. Restore the default settings.
default N/A
14. Bring up the dialup interface.
undo shutdown By default, a dialup interface is up.
Configuring MP for DDR
MP for DDR includes the following settings:
• Link load threshold:
If you set a link load threshold in the range of 1 to 99, MP tunes allocated bandwidth according
to actual traffic percentage following these rules:
{ When the percentage of the traffic rate on a link to bandwidth exceeds the defined load
threshold, the system automatically brings up a second link and assigns the two links to an MP
bundle. When the percentage of the traffic rate on these two links to bandwidth exceeds the
defined load threshold, the system brings up a third link, and assigns it to the MP bundle, and
so on. This ensures appropriate traffic distribution on DDR links.
{ On the contrary, when the percentage of the traffic rate on N links (N is an integer equal to or
greater than 2) to the bandwidth of N – 1 links decreases below the defined load threshold, the
system automatically shuts down a link. This ensures the efficient use of DDR links.
• Maximum number of bundled links:
To implement MP for DDR, use dialer interfaces. The following describes how MP operates after
you configure the ppp mp and dialer threshold commands on a dialer interface:
{ When the ratio of traffic rate to bandwidth on a physical interface assigned to the dialer
interface exceeds the configured load threshold, DDR brings up another physical interface in
the dialer interface, and assigns these links to an MP bundle. If the physical interfaces are ISDN
BRI or PRI interfaces, DDR uses idle B channels on them to form an MP bundle.
{ When the number of bundled links reaches the upper threshold specified by the max-bind-num
argument, DDR stops bringing up new links.
• Minimum number of bundled links:
Some dial applications require multiple links carry services. To meet this requirement, configure
the ppp mp min-bind command to enable DDR to bring up multiple links when triggered to ensure
minimum bandwidth. MP operates in the following workflow:
a. DDR brings up the first link.
b. When the first link comes up, DDR checks whether the number of links in the MP bundle
reaches the lower limit specified by the min-bind-num argument. If not, the router brings up the
second link.
This process continues until the number of links in the MP bundle reaches the lower limit.
For more information about MP, see "Configuring PPP and MP."