Command Manual – IPv4 Routing
H3C S7500E Series Ethernet Switches
Chapter 4 IS-IS Configuration Commands
4-46
4.1.44 lsp-fragments-extend
Syntax
lsp-fragments-extend
[ [
level-1
|
level-2
|
level-1-2
] | [
mode-1
|
mode-2
] ] *
undo lsp-fragments-extend
View
IS-IS view
Parameters
mode-1
: Fragment extension mode 1, used on a network where some routers do not
support LSP fragment extension.
mode-2
: Fragment extension mode 2, used on a network where all routers support LSP
fragment extension.
level-1:
Applies the fragment extension mode to Level-1 LSPs.
level-2:
Applies the fragment extension mode to Level-2 LSPs.
level-1-2
: Applies the fragment extension mode to both Level-1 and Level-2 LSPs.
Note:
The
mode-1
and
level-1-2
keywords are used by default.
Description
Use the
lsp-fragments–extend
command to enable LSP fragment extension in a
specified mode and level.
Use the
undo lsp-fragments–extend
command to disable this feature.
The feature is disabled by default.
Note the following:
z
After LSP fragment extension is enabled in an IS-IS process, the MTUs of all the
interfaces on which this IS-IS process is enabled must not be less than 512;
otherwise, LSP fragment extension will not take effect.
z
At least one virtual system needs to be configured for the router to generate
extended LSP fragments. An IS-IS process allows 50 virtual systems at most.
Examples
# Enable LSP fragment extension of
mode-1
and
Level-2
.
<Sysname> system-view
