I am very hungry!!!!
According to the docs, the IOS 12.3 supports GLBP
well, I have in front of me one 2610 16F/64D with 12.3(26) full and id doesn't have GLBP
Cisco Internetwork Operating System Software IOS (tm) C2600 Software (C2600-IK9O3S3-M), Version 12.3(26), RELEASE SOFTWARE (fc2) Technical Support:
ROM: System Bootstrap, Version 11.3(2)XA4, RELEASE SOFTWARE (fc1)
Router uptime is 6 minutes System returned to ROM by power-on System image file is "flash:c2600-ik9o3s3-mz.123-26.bin" cisco 2610 (MPC860) processor (revision 0x203) with 61440K/4096K bytes of memory. Processor board ID JAD043305SH (474625716) M860 processor: part number 0, mask 49 Bridging software. X.25 software, Version 184.108.40.206 Ethernet/IEEE 802.3 interface(s) 32K bytes of non-volatile configuration memory. 16384K bytes of processor board System flash (Read/Write)
According to the docs, it should have it!!!
I would like to re-use a pool of 2610 with GLBP to do an internal round-robin DNS server relay :)