problema de adjacência do roteador ISIS

Question

Estou tentando configurar uma política básica de roteamento ISIS para uma rede com as seguintes configurações:

Servidor A:

router1.home.domain1.net# show running-config

Current configuration:
!
hostname router1.domain1.net
password abcdefg
!
interface he-wan0
!
interface lan0
!
interface lo
!
interface serverconn
 ip router isis interconnections
 isis circuit-type level-1-2
 isis hello-interval 5
 isis priority 1
!
interface wan0
!
interface wlp2s0
!
router isis interconnections
 net 49.2112.4120.2420.0000.00
 metric-style narrow
!
line vty
!
end

Servidor B:

server0.domain2.com(config-if)# show running-config

Current configuration:
!
password abcdefg2
!
interface domain1connect
 ip router isis interconnections
 isis circuit-type level-1-2
 isis hello-interval 5
 isis priority 10
!
interface eno1
!
interface eno2
!
interface ens3f0
!
interface ens3f1
!
interface lo
!
interface userlan
!
router isis interconnections
 net 49.2113.1872.1900.0000.00
 metric-style narrow
!
line vty
!
end

No momento, posso ver o tráfego (via tcpdump) de domain1.net:

root@router1:~# tcpdump -vi serverconn
tcpdump: listening on serverconn, link-type EN10MB (Ethernet), capture size 262144 bytes
19:59:08.010409 IS-IS, length 1497
        L1 Lan IIH, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (0), max-area: 3 (0)
          source-id: 1872.1900.0000,  holding time: 50s, Flags: [Level 1, Level 2]
          lan-id:    0000.0000.0000.00, Priority: 10, PDU length: 1497
            Area address(es) TLV #1, length: 4
              Area address (length: 3): 49.2113
            Protocols supported TLV #129, length: 1
              NLPID(s): IPv4 (0xcc)
            IPv4 Interface address(es) TLV #132, length: 4
              IPv4 interface address: 10.255.253.4
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 168
19:59:10.200352 IS-IS, length 1497
        L2 Lan IIH, hlen: 27, v: 1, pdu-v: 1, sys-id-len: 6 (0), max-area: 3 (0)
          source-id: 4120.2420.0000,  holding time: 50s, Flags: [Level 1, Level 2]
          lan-id:    0000.0000.0000.00, Priority: 1, PDU length: 1497
            Area address(es) TLV #1, length: 4
              Area address (length: 3): 49.2112
            Protocols supported TLV #129, length: 1
              NLPID(s): IPv4 (0xcc)
            IPv4 Interface address(es) TLV #132, length: 4
              IPv4 interface address: 10.255.253.1
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 255
            Padding TLV #8, length: 168

Eu não consigo descobrir por que os dois roteadores não se vêem, e qualquer ajuda seria muito apreciada.

Eu já tentei usar o mesmo ID de área e configurá-lo como uma conexão de Nível 1, mas isso também não parece funcionar.

Obrigado.