HPE FlexNetwork 5510 HI Series Layer 3 - Ip Routing Configuration Guide

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If the IS-IS routers have different interface MTUs, configure the maximum size of generated LSP
packets to be smaller than the smallest interface MTU in the area. Without the configuration, the
routers must dynamically adjust the LSP packet size to fit the smallest interface MTU, which takes
time and affects other services.
To specify LSP lengths:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Specify the maximum length
of generated Level-1 LSPs or
Level-2 LSPs.
lsp-length originate
size [
level-1
|
level-2
]
By default, the maximum
length of generated Level-1
LSPs or Level-2 LSPs is 1497
bytes.
4. Specify the maximum length
of received LSPs.
lsp-length receive
size
By default, the maximum
length of received LSPs is
1497 bytes.
Enabling LSP flash flooding
Changed LSPs can trigger SPF recalculation. To advertise the changed LSPs before the router
recalculates routes for faster network convergence, enable LSP flash flooding.
To enable LSP flash flooding:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Enable LSP flash
flooding.
flash-flood
[
flood-count
flooding-count |
max-timer-interval
flooding-interval | [
level-1 |
level-2
] ] *
By default, LSP flash
flooding is disabled.
Enabling LSP fragment extension
Perform this task to enable IS-IS fragment extension for an IS-IS process. The MTUs of all interfaces
running the IS-IS process must not be less than 512. Otherwise, LSP fragment extension does not
take effect.
To enable LSP fragment extension:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter IS-IS view.
isis
[ process-id ] [
vpn-instance
vpn-instance-name ]
N/A
3. Enable LSP fragment
extension.
lsp-fragments-extend
[
level-1
|
level-1-2
|
level-2
]
By default, this feature is disabled.
4. Configure a virtual
system ID.
virtual-system
virtual-system-id
By default, no virtual system ID is
configured.
Configure at least one virtual system
to generate extended LSP fragments.

HPE FlexNetwork 5510 HI Series Specifications

General

Brand	HPE
Model	FlexNetwork 5510 HI Series
Category	Switch
Language	English