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Is-is non-stop routing, Overview – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Routing Configuration Guide

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IS-IS Non-Stop Routing

Level-1 Designated IS: XMR1-02 Level-1 DIS Changes: 0

Level-2 Metric: 10, Level-2 Priority: 50

Level-2 Hello Interval: 10 Level-2 Hello Multiplier: 3

Level-2 Designated IS: MLX2-02 Level-2 DIS Changes: 0

Circuit State Changes: 1 Circuit Adjacencies State Changes: 1

Rejected Adjacencies: 0

Circuit Authentication L1 failures: 0

Circuit Authentication L2 failures: 0

Bad LSPs 0

Control Messages Sent: 318 Control Messages Received: 229

IP Enabled: TRUE

IP Address and Subnet Mask:

10.50.50.20 255.255.255.0

IPv6 Enabled: FALSE

To determine if IS-IS point-to-point link is being used by ISs, use the show isis neighbor command.
In the example below, the line in bold identifies a point-to-point configuration on the XMR1 system
for the gre_tnl 1 interface.

You can use the show ip route isis command to determine if next hop is a tunnel. For example.

IS-IS Non-Stop Routing

Overview

NOTE

IS-IS Non-Stop Routing (NSR) is applicable only to IPv4 routes computed by IS-IS and does not apply
to IPv6 routes.

NOTE

IS-IS NSR is not supported on the Brocade NetIron CES and Brocade NetIron CER platforms.

Brocade# show isis neighbor

Total number of IS-IS Neighbors: 3

System Id Interface SNPA State Holdtime Type Pri StateChgeTime

0000.0000.0004 eth 6/2 0000.0076.4805 UP 30 ISL1 0 0 :0 :8 :42

0000.0000.0004 eth 6/2 0000.0076.4805 UP 30 ISL2 0 0 :0 :8 :42

XMR1 gre_tnl 1 0000.0000.0005 UP 30 PTPT 127 0 :0 :9 :16

Brocade# show ip route isis

Type Codes - B:BGP D: Connected I: ISIS S: Static R: RIP O:O SPF; Cost - Dist/Metric

Destination Gateway Port Cost Type

1 10.30.30.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

2 10.100.100.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

3 10.100.101.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

4 10.100.102.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

5 10.100.103.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

6 10.100.104.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

7 10.100.105.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

8 10.100.106.0/24 10.50.50.10 gre_tnl 1 115/20 IL1

9 10.100.107.0/24 10.50.50.10 gre_tnl 1 115/20 IL1