c7500: L3VPN recursive rewrite on RSP4/R5000's FEIP
does any of you know what 'recursive rewrite' mean?
simple setup L3vpn, PE1-P-PE2.
in PE1 i use c7500 which has GE and FE interfaces. PE1 can't reach PE2's vrf_1 if FE is used. GE is ok. i found the following, which points to the difference between GE and FE being the uplink to P router. GE will impose tag properly and thus, work accordingly but FE shows it used 'recursive rewrite' instead.
i wonder if FEIP supports double tags.
thanks for any direction.
pe1_cisco#sho inter fastEthernet 1/1
FastEthernet1/1 is up, line protocol is up
Hardware is cyBus FastEthernet Interface, address is 0060.2fde.6d21 (bia 0060.2fde.6d21)
Re: c7500: L3VPN recursive rewrite on RSP4/R5000's FEIP
the recursive rewrite usually refers to a situation, where more than one IGP path to the BGP next hop is available. Basically CEF informs you, that the VPN label will be inserted behind the proper BGP next hop label.
In your case you can see those with "show ip cef 22.214.171.124 detail".
I would assume you have at least two different labels from two different neighbor routers to reach 126.96.36.199.
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