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SPAN question

SPYME.GOOGLE
Level 1
Level 1

1. Can a trunk port be source of a span ot rspan session.

2. I have an 802.1q trunk and ISL trunk ports in an a single ether channel. What i ment is can i ahve different trunking encaplulations in an ehter channel.

Thanx

2 Replies 2

Adam Frederick
Level 3
Level 3

1. Yes

2. No, Inconsistent trunk modes can produce unexpected results.

fzamora
Cisco Employee
Cisco Employee

Hi,

You can configure a trunk port as a source port. By default, all VLANs active on the trunk are monitored. You can limit SPAN traffic monitoring on trunk source ports to specific VLANs by using VLAN filtering. Only switched traffic in the selected VLANs is sent to the destination port. This feature affects only traffic forwarded to the destination SPAN port and does not affect the switching of normal traffic.

Franco Zamora

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