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Webcast-Catalyst9k
New Member

reset a tcp session through the router manually ?

Hi all,

how to reset a tcp session through the router manually ?

BRs

Biao

6 REPLIES
Cisco Employee

Re: reset a tcp session through the router manually ?

You can use the "clear line" command if it is a telnet session that you are trying to reset. For other type of TCP sessions you can do a "show tcp brief" to list the active TCP sessions and the associated TCBs and then do a "clear tcp tcb "

Hope this help.

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
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Cuauhtémoc, Juárez
Ciudad de México, 06600
México
New Member

Re: reset a tcp session through the router manually ?

Hi Hritter,

Thanks , Is the possible to show tcp session

pass through the router? no only start by or end to

this router.

: )

BRs

Biao

Silver

Re: reset a tcp session through the router manually ?

I don't know if you can RESET session that is passing through the router, but i know you can block it using the access lists.

Silver

Re: reset a tcp session through the router manually ?

If the router is doing NAT/PAT, clearing NAT translations will void all TCP sessions.

Thanks.

New Member

Re: reset a tcp session through the router manually ?

Hi all,

Thanks ; ) . for the traffic pass through Cisco Router,

maybe need other tools like ACS,IDS.

BRs

Biao

New Member

Re: reset a tcp session through the router manually ?

Hi,

You can enable ip route-cache flow on the interface to check the TCP sessions passing thru the router.Issue " show ip cache flow | i 06" where 06 is Protocol number for TCP in an IP datagram.Make sure you enable it during non-peak hours.

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