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Community Member

BGP keepalives traffic

Is it possible to QOS classify BGP keepalives and give it high priority traffic ?

thank you

6 REPLIES

Re: BGP keepalives traffic

You cannot classify only the BGP keepalive packets and prioritize it.

You can prioritize the traffic between the peers/neighbors on TCP port 179 though

HTH

Narayan

Community Member

Re: BGP keepalives traffic

Hi,

You can match the port or use NBAR to recognice BGP Keepalives and classify it with CS6. it will be getting higher priority over everything.

Thanks and Regards,

Srinath.M

Cable&Wireless

Community Member

Re: BGP keepalives traffic

Thank you.

Just wondering how do you recognize BGP keepalives packets ? is there a signature ?

I can understand regarding the BGP peer and prioritizing Dest 179

Community Member

Re: BGP keepalives traffic

Hi,

NBAR uses port mappings as well.

Router# show ip nbar port-map

port-map bgp udp 179

port-map bgp tcp 179

port-map cuseeme udp 7648 7649

port-map cuseeme tcp 7648 7649

port-map dhcp udp 67 68

port-map dhcp tcp 67 68

which will enable it to track BGP Keepalives.

and then match teh same using protocol BGP and put it in whichever class you want with a higher priority.

Thanks and Regards,

Srinath.M

Cable&Wireless

srinath.muralidharan@cw.com

Cisco Employee

Re: BGP keepalives traffic

I just want to mention that BGP traffic is already assigned a IP precedence of 6 just like most control plane traffic.

Hope this helps,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
Community Member

Re: BGP keepalives traffic

Thank you for all the responses.

Appreciate it

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