[c-nsp] Question on ISIS Cisco

[Harold Ritter]

Jay,

The metric can be different for v4 and v6 only if one use multi-topology.

Regards

Le 2011-08-04 à 13:47, Jay Ford a écrit :

> On Thu, 4 Aug 2011, Olivier CALVANO wrote:
>> I'm looking for information on configuring ISIS
>> on cisco 6500/Sup720-3BXL:
>> 
>> I have two Cisco 6500/Sup720-3BXL connected by
>> Layer 2 link of 1 Gbit.
>> 
>> My config:
>> 
>> C6500-1:
>> 
>> interface GigabitEthernet1/2
>> mtu 2000
>> ip address 192.168.100.1 255.255.255.252
>> ip router isis
>> speed nonegotiate
>> mpls label protocol ldp
>> tag-switching ip
>> clns mtu 1500
>> 
>> router isis
>> net 49.0001.0000.0000.0424.00
>> is-type level-2-only
>> metric-style wide
>> redistribute connected
>> 
>> 
>> 
>> 
>> C6500-2:
>> 
>> interface GigabitEthernet3/2
>> mtu 2000
>> ip address 192.168.100.2 255.255.255.252
>> ip router isis
>> speed nonegotiate
>> mpls label protocol ldp
>> mpls ip
>> 
>> router isis
>> net 49.0001.0000.0000.0421.00
>> is-type level-2-only
>> metric-style wide
>> redistribute connected
>> !
>> 
>> 
>> 
>> 
>> Soon, I will add a new link between the two for backup.
>> This link is on port Gigabit but there are only 100 Mbits of Commit
>> I would like the cisco C6500 use it only on the 1 Gb link does not work
>> more.
>> 
>> I will add in config:
>> 
>> C6500-1:
>> 
>> interface GigabitEthernet1/3
>> mtu 2000
>> ip address 192.168.50.1 255.255.255.252
>> ip router isis
>> speed nonegotiate
>> mpls label protocol ldp
>> tag-switching ip
>> clns mtu 1500
>> 
>> 
>> C6500-2:
>> 
>> interface GigabitEthernet3/3
>> mtu 2000
>> ip address 192.168.50.2 255.255.255.252
>> ip router isis
>> speed nonegotiate
>> mpls label protocol ldp
>> mpls ip
>> 
>> 
>> How can I do to make it a priority is having an link compared to another?
> 
> Set ISIS metrics on the interfaces.  Lower numbers are favored.  For example,
> to favor the first link:
>   C6500-1:
>      interface GigabitEthernet1/2
>       isis metric 100
>      interface GigabitEthernet1/3
>       isis metric 200
>   C6500-2:
>      interface GigabitEthernet3/2
>       isis metric 100
>      interface GigabitEthernet3/3
>       isis metric 200
> 
> Pay attention to how your metrics interact on your various links.  The "show
> isis topology" command should show the existing interface metrics.
> 
> Note that metrics can be (& perhaps must be) configured distinctly for IPv4 &
> IPv6.
> 
> ________________________________________________________________________
> Jay Ford, Network Engineering Group, Information Technology Services
> University of Iowa, Iowa City, IA 52242
> email: jay-ford at uiowa.edu, phone: 319-335-5555, fax: 319-335-2951
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Harold Ritter
Directeur Technique/Technical Leader
Advanced Services Central Engineering
CCIE 4168 (R&S, SP)

harold at cisco.com
Téléphone: 514 847 6856

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