ISIS/SPBM direct using VRF's.

Brent_Addis — Thu, 20 Nov 2025 22:36:41 GMT

Hi,

Scenario:
2 7520 switches, 9.2 firmare running a number of VRF's. Both switches have a BGP session upstream with a differing local pref, with ISIS sharing routes between.
ISIS is redistributing BGP routes, however it is not redistributing direct routes. Routes are picked up by remote switch.
VRF's have ipvpn enabled.

Looking for ideas!

Anonymised config from switch with issue is below:

router isis

spbm 1 nick-name 1.63.02
spbm 1 multicast enable
spbm 1 ip enable
spbm 1 smlt-peer-system-id xxxxx.xxxx
exit

router vrf MY-VRF
ipvpn
i-sid 13990003
ipvpn enable
exit

interface Vlan 4000
vrf MY-VRF
ip address 10.60.64.1 255.255.240.0 21
ip dhcp-relay
exit

router vrf MY-VRF
isis redistribute direct
isis redistribute direct enable
isis redistribute bgp
isis redistribute bgp enable
ip bgp redistribute isis
ip bgp redistribute isis enable
ip bgp redistribute isis route-map "MY_VRF_ISIS_TO_BGP"
ip bgp redistribute static
ip bgp redistribute static enable
ip bgp redistribute direct
ip bgp redistribute direct enable

ip bgp apply redistribute isis vrf MY-VRF
ip bgp apply redistribute direct vrf MY-VRF
isis apply redistribute direct vrf MY-VRF
isis apply redistribute bgp vrf MY-VRF

If I check my routing table:
show ip route vrf MY-VRF

Switch-2:1#show ip route 10.60.64.0 vrf MY-VRF
************************************************************************************
Command Execution Time: Fri Nov 21 11:32:23 2025 NZDT
************************************************************************************
==========================================================================================================
IP Route - VRF MY-VRF
==========================================================================================================
NH INTER
DST MASK NEXT VRF/ISID COST FACE PROT AGE TYPE PRF
----------------------------------------------------------------------------------------------------------
10.60.64.0 255.255.240.0 10.60.64.1 - 1 4041 LOC 0 DB 0

1 out of 354 Total Num of Route Entries, 354 Total Num of Dest Networks displayed.
------------------------------------------------------------------------------------------------------------

However it never shows up in my ISIS route table, whereas everything from BGP does.

Switch-2:1#show isis spbm ip-unicast-fib all | include 10.60.64.0/20
************************************************************************************
Command Execution Time: Fri Nov 21 11:35:03 2025 NZDT
************************************************************************************
----------------------------------------------------------------------------------------------------------------------------------------------------------------
Home: Total number of SPBM IP_UNICAST FIB entries 397
Remote: Total number of SPBM IP-UNICAST FIB entries 0
----------------------------------------------------------------------------------------------------------------------------------------------------------------

Switch-2:1#

Any help appreciated, beating my head a bit on this!

Re: ISIS/SPBM direct using VRF's.

Brent_Addis — Thu, 20 Nov 2025 23:08:11 GMT

Well bloody hell, despite running the below multiple times, once more did the trick. ugh!

"isis apply redistribute direct vrf MY-VRF"

topic ISIS/SPBM direct using VRF's. in ExtremeSwitching (VSP/Fabric Engine)

ISIS/SPBM direct using VRF's.

Re: ISIS/SPBM direct using VRF's.