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If a bit error event occurs on the link between UPE and SPE1, and bit-error-triggered RSVP-
TE tunnel switching cannot protect services against bit errors, run the
display bgp vpnv4
routing-table
command on UPE. The command output shows that the route with bit errors
is not selected because of
nexthop bit error
.
<HUAWEI>
display bgp vpnv4 vpn-instance vpna routing-table 100.2.1.0
BGP local router ID : 1.1.1.1
Local AS number : 100
VPN-Instance vpna, Router ID 1.1.1.1:
Paths: 2 available, 1 best, 1 select
BGP routing table entry information of 100.2.1.0/24:
Label information (Received/Applied): 1029/NULL
From: 3.3.3.3 (3.3.3.3)
Route Duration: 04h59m22s
Relay Tunnel Out-Interface: Tunnel1/0/2
Relay token: 0x3
Original nexthop: 3.3.3.3
Qos information : 0x0
Ext-Community:RT <1 : 1>
AS-path Nil, origin incomplete, MED 0, localpref 100, pref-val 0, valid,
internal, best, select, active, pre 255
Originator: 4.4.4.4
Cluster list: 3.3.3.3
Not advertised to any peer yet
BGP routing table entry information of 100.2.1.0/24:
Label information (Received/Applied): 1028/NULL
From: 2.2.2.2 (2.2.2.2)
Route Duration: 04h59m22s
Relay Tunnel Out-Interface: Tunnel1/0/1
Relay token: 0x1
Original nexthop: 2.2.2.2
Qos information : 0x0
Ext-Community:RT <1 : 1>
AS-path Nil, origin incomplete, MED 0, localpref 100, pref-val 0, valid,
internal, backup, pre 255,
not preferred for nexthop bit error
Originator: 4.4.4.4
Cluster list: 2.2.2.2
Not advertised to any peer yet
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If a bit error event occurs on the link between UPE and SPE1, and bit-error-triggered RSVP-
TE tunnel switching cannot protect services against bit errors, run the
display bgp vpnv4
routing-table
command on NPE. The command output shows that the NPE preferentially
selects the VPNv4 routes advertised by SPE2. The VPNv4 routes advertised by SPE1 are
not preferentially selected because of
Local_Pref
.
<HUAWEI>
display bgp vpnv4 vpn-instance vpna routing-table 100.1.1.0
BGP local router ID : 2.2.2.2
Local AS number : 100
Total routes of Route Distinguisher(100:1): 2
BGP routing table entry information of 100.1.1.0/24:
RR-client route.
Label information (Received/Applied): 1026/1029
From: 1.1.1.1 (1.1.1.1)
Route Duration: 21h23m06s
Relay IP Nexthop: 172.1.1.1
Relay IP Out-Interface: GigabitEthernet1/0/1
Relay Tunnel Out-Interface: Tunnel1/0/1
Relay token: 0x17
Original nexthop: 1.1.1.1
Qos information : 0x0
Ext-Community:RT <1 : 1>
AS-path Nil, origin incomplete, MED 0,
localpref 50
, pref-val 0, valid,
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
10 Bit-Error-Triggered Protection Switching Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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