277
2. Enter BGP instance view or
BGP-VPN instance view.
• Enter BGP instance view:
bgp as-number [ instance
instance-name ]
• Enter BGP-VPN instance
view:
a. bgp as-number
[ instance
instance-name ]
b. ip vpn-instance
N/A
3. Configure BGP to protect an
EBGP peer or peer group
when the memory usage
reaches level 2 threshold.
peer
{ group-name | ipv4-address
[ mask-length ] }
low-memory-exempt
By default, BGP periodically tears
down an EBGP session to release
memory resources when level 2
threshold is reached.
To configure BGP to protect an EBGP peer or peer group when the memory usage reaches level 2
threshold (IPv6 unicast/multicast address family):
1. Enter system view.
system-view
N/A
2. Enter BGP instance view or
BGP-VPN instance view.
• Enter BGP instance view:
bgp as-number [ instance
instance-name ]
• Enter BGP-VPN instance
view:
a. bgp as-number
[ instance
instance-name ]
b. ip vpn-instance
N/A
3. Configure BGP to protect an
EBGP peer or peer group
when the memory usage
reaches level 2 threshold.
peer
{ group-name | ipv6-address
[ prefix-length ] }
low-memory-exempt
By default, BGP tears down an
EBGP session to release memory
resources periodically when level
2 threshold is reached.
Configuring an update delay for local MPLS labels
BGP includes local MPLS labels in advertised VPNv4 routes, VPNv6 routes, labeled IPv4 unicast
routes, and labeled IPv6 unicast routes.
When a local label is changed, BGP removes the old label and advertises the new label. Traffic
interruption occurs if BGP peers use the old label to forward packets before they learn the new label.
To resolve this issue, configure an update delay for local MPLS labels. BGP does not remove the old
label before the update delay timer expires.
To configure an update delay for local MPLS labels:
1. Enter system view.
system-view
N/A
2. Enter BGP instance view.
bgp
as-number [
instance
instance-name ]
N/A
3. Configure an update delay for retain local-label
retain-time
By default, the update delay is 60
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