[j-nsp] aggregated-ethernet and metric adjustment, if one link fails

[Harry Reynolds]

Have you tried setting a reference BW?  The below is working for me:

Regards


{master}[edit]
jnpr at R1-RE0# show protocols isis 
reference-bandwidth 100g;
level 1 disable;
interface ae0.1 {
    point-to-point;
}

jnpr at R1-RE0# run show interfaces ae0 
Physical interface: ae0, Enabled, Physical link is Up
  Interface index: 128, SNMP ifIndex: 1166
  Link-level type: Ethernet, MTU: 1518, Speed: 20Gbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled,
  Source filtering: Disabled, Flow control: Disabled, Minimum links needed: 1, Minimum bandwidth needed: 0
  Device flags   : Present Running
  
  
{master}[edit]
jnpr at R1-RE0# run show isis interface detail                 
IS-IS interface database:
ae0.1
  Index: 325, State: 0x6, Circuit id: 0x1, Circuit type: 2
  LSP interval: 100 ms, CSNP interval: 5 s
  Adjacency advertisement: Advertise
  Level Adjacencies Priority Metric Hello (s) Hold (s) Designated Router
    2             1       64      5     9.000       27
    
    
 {master}[edit]
jnpr at R1-RE0# deactivate interfaces xe-2/0/1    

{master}[edit]
jnpr at R1-RE0# commit 
re0: 
configuration check succeeds
. . .

{master}[edit]
jnpr at R1-RE0# run show isis interface detail    
IS-IS interface database:
ae0.1
  Index: 325, State: 0x6, Circuit id: 0x1, Circuit type: 2
  LSP interval: 100 ms, CSNP interval: 5 s
  Adjacency advertisement: Advertise
  Level Adjacencies Priority Metric Hello (s) Hold (s) Designated Router
    2             1       64     10     9.000       27
. . .

{master}[edit]
jnpr at R1-RE0# run show interfaces ae0 
Physical interface: ae0, Enabled, Physical link is Up
  Interface index: 128, SNMP ifIndex: 1166
  Link-level type: Ethernet, MTU: 1518, Speed: 10Gbps, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled,
  Source filtering: Disabled, Flow control: Disabled, Minimum links needed: 1, Minimum bandwidth needed: 0
  Device flags   : Present Running
  Interface flags: SNMP-Traps Internal: 0x4000
  Current address: 00:1f:12:b8:8f:c0, Hardware address: 00:1f:12:b8:8f:c0
  Last flapped   : 2012-01-09 00:04:55 PST (4d 11:59 ago)
  Input rate     : 5536 bps (10 pps)
  Output rate    : 6600 bps (11 pps)

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Alex D.
Sent: Friday, January 13, 2012 11:26 AM
To: Juniper-Nsp
Subject: [j-nsp] aggregated-ethernet and metric adjustment, if one link fails

Hi list,

is it possible to automatically raise IS-IS metric, if one or more 
link(s) of an aggregated-ethernet fails ?

Exp.:
We have an aggregated-ethernet interface with 2x 1Gbps. Our IS-IS metric 
for this interface is 50. Metric for a single Gigabit interface is 100.

It would be nice, if the metric could be automatically raised to 100 
when one member link fails.
Does anyone know a way to accomplish this goal ?

Regards,
Alex
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