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====== Lab 00600 iBGP 2 Routers, IOS-XE ======

{{ :cisco:labs:00600.jpg?700 |}}

  - Complete [[cisco:labs:00000|Lab 00000 Initial Config 2 Routers, IOS-XE]]\\ 

===== Router 1 =====
<code>en
conf t
router bgp 64512
 bgp log-neighbor-changes
 network 1.1.1.1 mask 255.255.255.255
 network 12.0.0.1 mask 255.255.255.255
 neighbor 12.0.0.2 remote-as 64512</code>

===== Router 2 =====
<code>en
conf t
router bgp 64512
 bgp log-neighbor-changes
 network 2.2.2.2 mask 255.255.255.255
 network 12.0.0.2 mask 255.255.255.255
 neighbor 12.0.0.1 remote-as 64512</code>


===== Verification =====
<code>r1#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/3 ms</code>

<code>r1#show ip route | b Gate
Gateway of last resort is not set

      1.0.0.0/32 is subnetted, 1 subnets
C        1.1.1.1 is directly connected, Loopback0
      2.0.0.0/32 is subnetted, 1 subnets
B        2.2.2.2 [200/0] via 12.0.0.2, 00:04:10
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.0.0.0/24 is directly connected, GigabitEthernet1
L        12.0.0.1/32 is directly connected, GigabitEthernet1</code>

<code>r1#show ip bgp neighbors | i BGP neighbor|ID|BGP state
BGP neighbor is 12.0.0.2,  remote AS 64512, internal link
  BGP version 4, remote router ID 2.2.2.2
  BGP state = Established, up for 00:07:54</code>

<code>r1#show ip bgp summary
BGP router identifier 1.1.1.1, local AS number 64512
BGP table version is 3, main routing table version 3
2 network entries using 496 bytes of memory
2 path entries using 272 bytes of memory
2/2 BGP path/bestpath attribute entries using 576 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 1344 total bytes of memory
BGP activity 2/0 prefixes, 2/0 paths, scan interval 60 secs
2 networks peaked at 22:41:19 Dec 26 2025 UTC (00:09:07.981 ago)

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
12.0.0.2        4        64512      15      14        3    0    0 00:09:07        1</code>

<code>r2#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/3 ms</code>

<code>r2#show ip route | b Gate
Gateway of last resort is not set

      1.0.0.0/32 is subnetted, 1 subnets
B        1.1.1.1 [200/0] via 12.0.0.1, 00:10:51
      2.0.0.0/32 is subnetted, 1 subnets
C        2.2.2.2 is directly connected, Loopback0
      12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C        12.0.0.0/24 is directly connected, GigabitEthernet1
L        12.0.0.2/32 is directly connected, GigabitEthernet1</code>

<code>r2#show ip bgp neighbors | i BGP neighbor|ID|BGP state
BGP neighbor is 12.0.0.1,  remote AS 64512, internal link
  BGP version 4, remote router ID 1.1.1.1
  BGP state = Established, up for 00:08:32</code>

<code>r2#show ip bgp summary
BGP router identifier 2.2.2.2, local AS number 64512
BGP table version is 3, main routing table version 3
2 network entries using 496 bytes of memory
2 path entries using 272 bytes of memory
2/2 BGP path/bestpath attribute entries using 576 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 1344 total bytes of memory
BGP activity 2/0 prefixes, 2/0 paths, scan interval 60 secs
2 networks peaked at 22:41:19 Dec 26 2025 UTC (00:11:54.065 ago)

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
12.0.0.1        4        64512      18      18        3    0    0 00:11:53        1</code>
===== TCL Script =====
<code>r1#tclsh
r1(tcl)#foreach ipaddr {
+>(tcl)#12.0.0.2
+>(tcl)#2.2.2.2
+>(tcl)#} { ping $ipaddr }
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.0.0.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
r1(tcl)#tclquit</code>

<code>r2#tclsh
r2(tcl)#foreach ipaddr {
+>(tcl)#12.0.0.1
+>(tcl)#1.1.1.1
+>(tcl)#} { ping $ipaddr }
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.0.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/2 ms
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
r2(tcl)#tclquit</code>
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