IS-IS

cciesp

In IOS-XR what is the difference between metric-style wide Level 1 and metric-style wide.

router isis xyz
is-type level-1
metric-style wide Level 1

 

ADN

router isis xyz
is-type level-1
metric-style wide

 

!

markus.wirth

Hey cciesp...

Well I am not quite familiar with the IOS XR, as I dont have access to such components.

Have you checked this? -> http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.7/routing/command/reference/rr37isis.html#wp1325381

 

I think the difference is that the IOS will use the new style TLV only to level-1 neighbors. That what I would think of.

 

HTH

 

Regards!

Narayan.Neupane

This documentation page has examples which answers your queries, give sometime on this:

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t4/feature/guide/gtisglob.html

HAPPY STUDY

[:D]

leonvd79

You'll find that this is not something specific to IOS-XR.

The IOS command allows you to enable metric-style wide for level-1-2 or you can specifically enable wide metrics for level-1 or level-2.

The ISIS proces xyz is set to level-1 and as a result does not form any level-2 adjacencies. It accepts both level-1 and level-2 prefixes with wide metrics. You change this by explicitly stating which prefixes with wide metrics are accepted.

R4#show clns protocol

IS-IS Router: abc
  System Id: 0000.0000.0004.00  IS-Type: level-1
  Manual area address(es):
        47.0019
  Routing for area address(es):
        47.0019
  Interfaces supported by IS-IS:
        Ethernet1/3 - IP - IPv6 - IPv6
        Ethernet1/1 - IP - IPv6 - IPv6
        Ethernet1/0 - IP - IPv6 - IPv6
  Passive interface:
        Loopback0
  Redistribute:
    static (on by default)
  Distance for L2 CLNS routes: 110
  RRR level: none
  Generate narrow metrics: level-2
  Accept narrow metrics:   level-2
  Generate wide metrics:   level-1
  Accept wide metrics:     level-1
R4#show run | section ^router isis
router isis abc
 mpls traffic-eng router-id Loopback0
 net 47.0019.0000.0000.0004.00
 is-type level-1
 metric-style wide level-1
 max-lsp-lifetime 65535
 lsp-refresh-interval 65000
 spf-interval 5 1 50
 prc-interval 5 1 50
 lsp-gen-interval level-1 5 1 50
 no hello padding
 passive-interface Loopback0

R4#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
R4(config)#router isis abc

R4(config-router)#metric-style wide level-2
R4(config-router)#end
R4#show clns protocol | include wide metrics
  Generate wide metrics:   level-2
  Accept wide metrics:     level-2

R4(config-router)#no metric-style wide level-2
R4(config-router)#metric-style wide
R4(config-router)#end
R4#show clns protocol | include wide metrics
  Generate wide metrics:   level-1-2
  Accept wide metrics:     level-1-2