Got it
Huawei Enterprise Support Community
Community Forums Routing & Switching
MPLS L3VPN Option C

MPLS L3VPN Option C

Created: Apr 14, 2021 07:02:57Latest reply: Apr 14, 2021 09:15:30 450 2 1 0 0
  HiCoins as reward： 0 (problem unresolved)
View the author 1#

Hi,


1- we are using two route-policy  in MPLS Option C on ASBR ,In one policy only apply lable & other policy have if (conditional statment) also, my question is whats the meaning of if statment to check label means which label ( LDP & BGP or RD ,RT??) is checking in if condition here & why?


2- why using diffrent two policy here? & which policy is used in which direction like toward PE & remote ASBR?


3- & what will need if also want ipv4 BGP routes b/w AS  along with VPN routes?


4- why MPLS command is running b/w ASBR ? i think LDP is distributing lable then how only mpls command distribute lable b/w ASBRs?


5- which lable(Which values in lable BGP,LDP?)  is attached through apply label  commands ? 


6- as in option C we are establishing end to end tunnel then its means that need to carry same RT value through out the path from one PE  to other PE in VPN lablel.


Thanks



MPLSVPNOption C

Like (1) Dislike (0) Favorite(0) Share Report
Previous: MPLS L3VPN Option C
Next: Huawei quidway s3026c
Featured Answers

Recommended answer

(2) (0)
chenhui
Admin Created Apr 14, 2021 09:15:30

Posted by chenhui at 2021-04-14 07:05Hello, friend!It's nice to meet you in the community.We're working on getting the right answer for y ...

Hi,
1&2. As you said, in the Option C solution 1, the route policy without if-match command is used to distribute for the routes that advertise to the ASBR, while for the route policy that used to advertise the routes to the RR, there is command if-match, this is because that the ASBR might receive other BGP routes(not the control plane traffic of MPLS VPN), it should identify the traffic by the MPLS label.
3. As talked in previous, the route-policy will identify these routes.
4. The label is distributed for the BGP routes, which requires the mpls command enabled between the ASBRs.
5. If you mean the command 'apply mpls-lable' in the route-policy, the protocol MP-BGP distributes the lables.
6. Nope, it's not mandatory that the RT on both PEs are the same. RT determines which parts of VPNv4 routes should be accepted, in other words, you can adjust that under the vpn-instance view to deny or accept the specified VPNv4 routes.

View more
  • x
  • convention：
All Answers
(0) (0)
2#
chenhui
chenhui Admin Created Apr 14, 2021 07:05:25

Hello, friend!
It's nice to meet you in the community.
We're working on getting the right answer for you.
View more
  • x
  • convention：
(2) (0)
3#
chenhui
chenhui Admin Created Apr 14, 2021 09:15:30

Posted by chenhui at 2021-04-14 07:05Hello, friend!It's nice to meet you in the community.We're working on getting the right answer for y ...

Hi,
1&2. As you said, in the Option C solution 1, the route policy without if-match command is used to distribute for the routes that advertise to the ASBR, while for the route policy that used to advertise the routes to the RR, there is command if-match, this is because that the ASBR might receive other BGP routes(not the control plane traffic of MPLS VPN), it should identify the traffic by the MPLS label.
3. As talked in previous, the route-policy will identify these routes.
4. The label is distributed for the BGP routes, which requires the mpls command enabled between the ASBRs.
5. If you mean the command 'apply mpls-lable' in the route-policy, the protocol MP-BGP distributes the lables.
6. Nope, it's not mandatory that the RT on both PEs are the same. RT determines which parts of VPNv4 routes should be accepted, in other words, you can adjust that under the vpn-instance view to deny or accept the specified VPNv4 routes.

View more
  • x
  • convention：
Back to list

Comment

Advanced
B Color Image Link Quote Code Smilies
You need to log in to comment to the post Login | Register
Comment

Notice: To protect the legitimate rights and interests of you, the community, and third parties, do not release content that may bring legal risks to all parties, including but are not limited to the following:
  • Politically sensitive content
  • Content concerning pornography, gambling, and drug abuse
  • Content that may disclose or infringe upon others ' commercial secrets, intellectual properties, including trade marks, copyrights, and patents, and personal privacy
Do not share your account and password with others. All operations performed using your account will be regarded as your own actions and all consequences arising therefrom will be borne by you. For details, see " User Agreement."

My Followers

Login and enjoy all the member benefits

Login
Huawei Website Support About Huawei Privacy User Agreement Terms of Use Cookies Cookie Settings
Huawei Enterprise Huawei Carrier Forum Training & Certification

Contact Us: e_online@huawei.com Copyright © 2022 Huawei Technologies Co., Ltd. All rights reserved.

APP

Block
Are you sure to block this user?
Users on your blacklist cannot comment on your post,cannot mention you, cannot send you private messages.
Reminder
Please bind your phone number to obtain invitation bonus.