The MPLS-OPS Archive

["Totti Murakami" <t-murakami@netone.co.jp>]

Hi Balaji,

Thanks for your reply.

| For acheiving 2nd requirment,  You can use the command "mpls traffic-eng
| reoptimize" on the Cisco 7600 routers to manually switchover the tunnels.
And I have one more question.
Is this command available for non-dynamic paths?
In the following case, will the path be changed to the path named Secondary
 if the current path is Primary and the command is used?

interface Tunnel100
ip unnumbered Loopback0
 no ip directed-broadcast
 tunnel source Loopback0
 tunnel destination x.x.x.x
 tunnel mode mpls traffic-eng
 tunnel mpls traffic-eng autoroute announce
 tunnel mpls traffic-eng path-option 1 explicit name Primary
 tunnel mpls traffic-eng path-option 2 explicit name Secondary

Thanks again,
-Totti
----- Original Message ----- 
From: "Balaji" <balaji_rajagopal@sifycorp.com>
To: "Totti Murakami" <t-murakami@netone.co.jp>
Cc: <mpls-ops@mplsrc.com>; "maheswaran B" <maheshwaran_b@sifycorp.com>
Sent: Friday, April 15, 2005 7:16 PM
Subject: Re: [MPLS-OPS]: LSP switchover for the maintainance reason


| Hi Totti Murakami,
|
| I would suggest you to use the tunnel reoptimization futures to acheive
| the same.
|
| For acheiving 2nd requirment,  You can use the command "mpls traffic-eng
| reoptimize" on the Cisco 7600 routers to manually switchover the tunnels.
|
| For acheiving 3rd requirment, You can use the tunnel lockdown feature.
| So that it will not fall back to primary path.
|
| " tunnel mpls traffic-eng path-option preference {dynamic | explicit
| name name | identifier id>} {lockdown} "
|
| I hope this helps.
|
| Regards
|
| Balaji,
| baalaji@yahoo.com
|
|
|
| Totti Murakami wrote:
|
| >Hi All,
| >
| >I am plannning to deploy rsvp-te based MPLS network with Cisco7600.
| >And there are some requirements for the network.
| >
| >1) Primary path and secondary path for an lsp are configured explicitly.
| >2) Primary path is used normally. But when the maintainance is required, the path is manually
| >changed to secondary. Then it must be changed without packet loss.
| >3) The path must not be back to primary automatically.
| >
| >For achieving the above requirements,
| >I wonder that I should configure two tunnels for one destination and change administrative-weight 
of
| >each of them. But if this configuration is used, rsvp-information will not reflect the real
| >bandwidth design compared to when using path-option in the tunnel configuration.
| >
| >Is there any reasonable way to meet these requirements?
| >Would you tell me how it should be configured?
| >
| >Thanks in advance,
| >-Totti Murakami
| >
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