Tried same, still have problem. What version are you using?
vpp# loop create-interface
loop0
vpp# classify table mask l3 ip4 dst l4 dst_port
vpp# ip session redirect table 0 match l3 ip4 dst 192.168.21.2 l4 dst_port 2156
via loop0
ip session redirect: parse error `l4 dst_port 2156 via loop0'
vpp# show version
vpp v21.06.0-1~10-gd9d52f1 built by root on OS-70-BUILD at 2021-12-06T19:10:22
Wei
________________________________
From: vpp-dev@lists.fd.io <vpp-dev@lists.fd.io> on behalf of Benoit Ganne
(bganne) via lists.fd.io <bganne=cisco....@lists.fd.io>
Sent: Tuesday, December 7, 2021 5:00 AM
To: Wei Huang <wei.hu.hu...@oracle.com>; vpp-dev@lists.fd.io
<vpp-dev@lists.fd.io>
Subject: [External] : Re: [vpp-dev] Use classify to direct specific udp packets
to use different path
Hi,
> vpp# classify table mask l3 ip4 dst l4 dst_port
> vpp# ip session redirect table 0 match l3 ip4 dst 192.168.21.2 l4 dst_port
> 2156 via ipip0
> ip session redirect: parse error `l4 dst_port 2156 via ipip0'
Not sure what is wrong, this works for me:
DBGvpp# loop create-interface
loop0
DBGvpp# classify table mask l3 ip4 dst l4 dst_port
DBGvpp# ip session redirect table 0 match l3 ip4 dst 192.168.21.2 l4 dst_port
2156 via loop0
DBGvpp# sh ip session redirect
[0] table 0 key 00000000:
000000000000000000000000000000000000000000000000000000000000c0a8
00000020: 15020000086c00000000000000000000
via:
path-list:[13] locks:1 flags:shared,no-uRPF, uRPF-list: None
path:[13] pl-index:13 ip4 weight=1 pref=0 attached:
loop0
forwarding
[@0]: dpo-drop ip4
DBGvpp#
ben
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