Optional) Configuring Mpls Label Allocation Based On The Ipv6 Vpn Instance - Huawei quidway s7700 Configuration Manual

Quidway S7700 Smart Routing Switch
Configuration Guide - VPN
Step 4 (Optional) Run:
routing-table limit number { alert-percent | simply-alert }
The maximum number of routes of the IPv6 VPN Instance is configured.
You can define the maximum number of routes that can be supported by the IPv6 VPN Instance
to avoid a PE importing too many IPv6 VPN routes.
Step 5 (Optional) Run:
prefix limit number { alert-percent [ route-unchanged ] | simply-alert }
The maximum number of prefixes of the IPv6 VPN instance is configured.
You can define the maximum number of prefixes for the IPv6 VPN instance to avoid importing
too many prefixes from the CE.
Step 6 (Optional) Run:
limit-log-interval interval
The frequency of displaying logs when the number of routes exceeds the threshold is configured.
Step 7 (Optional) Run:
import route-policy policy-name
An import routing policy of the IPv6 VPN instance is created.
Step 8 (Optional) Run:
export route-policy policy-name
An export routing policy of the IPv6 VPN instance is created.
----End
4.3.4 (Optional) Configuring MPLS Label Allocation Based on the
IPv6 VPN Instance
This part describes how the MPLS label is allocated in the IPv6 VPN Instance. A PE allocates
the same MPLS label for all routes of the IPv6 VPN Instance. If the IPv6 VPN routes are in a
great number, you can reduce the number of MPLS labels maintained by PEs.
Context
Do as follows on the PE device that is configured with IPv6 VPN Instance.
Issue 01 (2011-07-15)
NOTE
If the routing-table limit command is run, the system gives a prompt when the number of routes injected
into the routing table of the VPN instance exceeds the upper limit. If the routing-table limit command to
increase the maximum number of routes supported in an IPv6 VPN instance or the undo routing-table
limit command is run to remove the limit on the routing table, for excess routes, the following operations
are required:
l For the excessive static routes, you need to reconfigure them manually.
l For the excessive routes learnt from CEs through the IGP multi-instance routing protocol, you need to
re-initiate the multi-instance process of the routing protocol on the PE.
l For the remote cross routes learnt through the MP-IBGP and the BGP routes learnt from CEs, the
system automatically refreshes them.
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